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Origami principle in space deployable membrane structures:Mechanism,application and prospects 认领 引用
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作者 Junhao WU Kangjia FU +5 位作者 Sunquan YU Xuesong WU Qi ZHANG Zongyu WU Yong ZHAO Xiang ZHANG 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第5期298-329,共32页
The accelerated evolution of space technology has elevated the importance of high power and lightweight attributes in satellite design.In response to the conflict between the demand for large-scale,high-power payloads... The accelerated evolution of space technology has elevated the importance of high power and lightweight attributes in satellite design.In response to the conflict between the demand for large-scale,high-power payloads and the need for lightweight,compact platforms,flexible space origami membrane structures have emerged as a potential solution.These structures possess the ability to overcome the limitations of traditional deployable mechanisms.Their geometric reconfiguration capabilities,characterized by high folding ratios,effectively satisfy the high-power performance demands.Thus,this paper begins with an overview of the design and application of space origami membranes before investigating the design of creases,deployable mechanisms,and the close connection between the two,focusing on the origami principle.This section introduces various crease types with different motion dimensions,folding characteristics,advantages,disadvantages,and optimization methods.Then,the deployable mechanisms'structures,principles,and performance characteristics in three unfolding spatial dimensions are presented comprehensively.Based on the preceding sections,this paper reviews the application of the origami principle to spacecraft solar arrays,antennas,solar sails,drag sails,and light shade structures,considering the current status,application purpose,and effect.Finally,the development trend of space origami membrane structures is analyzed. 展开更多
关键词 Crease design Deployable mechanisms Membrane structures Origami principle Spacecraft
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Hydrodynamic Response of Floating Photovoltaic with Membrane Structure Under Different Wave Loads 认领 引用
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作者 LE Conghuan QI Xiling +2 位作者 XIONG Lichao ZHANG Puyang DING Hongyan 《Journal of Ocean University of China》 SCIE CAS CSCD 2025年第4期909-923,共15页
Offshore floating photovoltaic systems have tremendous potential to address the energy crisis.As a novel type of float-ing photovoltaic system,membrane structures are increasingly applied due to their advantages of be... Offshore floating photovoltaic systems have tremendous potential to address the energy crisis.As a novel type of float-ing photovoltaic system,membrane structures are increasingly applied due to their advantages of being lightweight and cost-effective.A 1:40 scaled model for laboratory experiments was designed and developed,considering Ocean Sun’s membrane structure.The study aims to investigate the hydrodynamic characteristics of the membrane structure under wave loading by testing its various mo-tion responses and mooring forces at different wave heights and periods.The conclusions indicate that as the wave period decreases within the range of 1.75 to 1.25 s,the heave motion response of the structure decreases,whereas pitch,surge motion response,heave acceleration,and mooring force increase.The amplitudes of various motions and mooring forces of the structure decrease with de-creasing wave height.The hydrodynamic responses under irregular and regular waves follow similar patterns,but the responses and mooring forces induced by irregular waves are more significant.The structure should be designed based on the actual wave height.In addition,the same frequency resonance phenomenon is avoided because the movement period of each degree of freedom is close to the wave period. 展开更多
关键词 floating photovoltaic membrane structure wave load motion response
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Experimental study on interaction between membrane structures and wind environment 认领 引用 被引量：9
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作者 Yang Qingshan Wu Yue Zhu Weiliang 《Earthquake Engineering and Engineering Vibration》 SCIE EI 2010年第4期523-532,共10页
The interaction between membrane structures and their environment can be either static or dynamic. Static interaction refers to interaction with static air, while dynamic interaction refers to wind and its effects. Th... The interaction between membrane structures and their environment can be either static or dynamic. Static interaction refers to interaction with static air, while dynamic interaction refers to wind and its effects. They can be evaluated by two parameters, added mass and radiation/aerodynamic damping, which are experimentally investigated in this study. The study includes the effects of both the static and dynamic interaction on structural dynamic characteristics, and the relationship between the interaction parameters and the covered area of a membrane structure for the static interaction and the relationship between the interaction parameters and wind direction and speed for the dynamic interaction. Experimental data show that the dynamic interaction is strongly correlated with the structural modes, i.e., the interaction of the symmetric modes is much larger than the anti-synmletric modes; and the influence of the dynamic interaction is significant in wind-induced response analysis and cannot be ignored. In addition, it is concluded that the structural natural frequency is remarkably decreased by this interaction, and the frequency band is significantly broadened. 展开更多
关键词 membrane structure structure-air/wind interaction added mass aerodynamic damping aero-elastic model
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Multi-objective optimization of membrane structures based on Pareto Genetic Algorithm 认领 引用 被引量：9
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作者 伞冰冰 孙晓颖 武岳 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2010年第5期622-630,共9页
A multi-objective optimization method based on Pareto Genetic Algorithm is presented for shape design of membrane structures from a structural view point.Several non-dimensional variables are defined as optimization v... A multi-objective optimization method based on Pareto Genetic Algorithm is presented for shape design of membrane structures from a structural view point.Several non-dimensional variables are defined as optimization variables,which are decision factors of shapes of membrane structures.Three objectives are proposed including maximization of stiffness,maximum uniformity of stress and minimum reaction under external loads.Pareto Multi-objective Genetic Algorithm is introduced to solve the Pareto solutions.Consequently,the dependence of the optimality upon the optimization variables is derived to provide guidelines on how to determine design parameters.Moreover,several examples illustrate the proposed methods and applications.The study shows that the multi-objective optimization method in this paper is feasible and efficient for membrane structures;the research on Pareto solutions can provide explicit and useful guidelines for shape design of membrane structures. 展开更多
关键词 membrane structures multi-objective optimization Pareto solutions multi-objective genetic algorithm
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Wind-induced response analysis of conical membrane structures 认领 引用 被引量：8
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作者 陈波 武岳 沈世钊 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2005年第5期481-487,共7页
Conical membrane structures are a typical form of tensile membrane structures. In the past, most studies focused on the static performance, but few on dynamic performance. In this paper, systematic parameter analysis ... Conical membrane structures are a typical form of tensile membrane structures. In the past, most studies focused on the static performance, but few on dynamic performance. In this paper, systematic parameter analysis of wind-induced response of conical membrane structures has been performed with nonlinear random simulation method in a time domain, by considering some parameters, such as span, rise-span ratio, prestress of membrane, and characteristic of the approaching wind flow. Moreover, formulas of the dynamic coefficient and nonlinear adjustment factor are advised, which can be conveniently used in wind-resistant design of conical membrane structures. 展开更多
关键词 conical membrane structures wind-induced response the dynamic coefficient nonlinear adjustment factor
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Smooth cutting pattern generation technique for membrane structures using geodesic line on subplane and spline interpolation 认领 引用 被引量：1
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作者 SHON Su-deok LEE Seung-jae LEE Kang-guk 《Journal of Central South University》 SCIE EI CAS 2013年第11期3131-3141,共11页
Practical techniques for smooth geodesic patterning of membrane structures were investigated.For the geodesic search,adjustment of the subplane of the extracted elements series was proposed,and various spline approxim... Practical techniques for smooth geodesic patterning of membrane structures were investigated.For the geodesic search,adjustment of the subplane of the extracted elements series was proposed,and various spline approximation methods were used to flatten the strip for the generation of a smooth pattern.This search approach is very simple,and the geodesic line could be easily attained by the proposed method without the need for a difficult computation method.Smooth cutting patterning can also be generated by spline approximation without the noise in discrete nodal information.Additionally,the geodesic cutting pattern saved about 21%of the required area for the catenary model due to the reduction of the curvature of the planar pattern seam line. 展开更多
关键词 membrane structures cutting pattern generation geodesic line spline interpolation triangular mesh sub-plane
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Wrinkling analysis of square space membrane structure under corner tension forces 认领 引用 被引量：1
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作者 王长国 杜星文 赫晓东 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2008年第4期513-517,共5页
An analytical approach based on the bifurcation theory is presented,in which the wrinkles are treated as the local buckling phenomena of the elastic thin plate with little bending stiffness.The average wrinkling wavel... An analytical approach based on the bifurcation theory is presented,in which the wrinkles are treated as the local buckling phenomena of the elastic thin plate with little bending stiffness.The average wrinkling wavelength was determined by incorporating the stress field and the out-of-plane force equilibrium condition of the wrinkled membrane.The wrinkling amplitude was then obtained by associating the characteristics of wrinkling texture with the obtained wrinkling wavelength.Results reveal that the wrinkled pattern exhibits a noticeable difference when the tension load is changed gradually,and two wrinkling styles are identified.The first style occurs for symmetric and moderately asymmetric loading,and it is characterized by small,radial corner wrinkles;the second style occurs for strongly asymmetric loading and is characterized by a deep,large diagonal wrinkle.The analytical predictions on the wrinkling characteristics and the developed rules are validated against wrinkling experimental observations. 展开更多
关键词 space membrane structure membrane wrinkle
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Analysis of tensioned membrane structures considering cable sliding 认领 引用 被引量：4
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作者 宋昌永 《Journal of Zhejiang University Science》 2003年第6期672-682,共11页
In routine design of tensioned membrane structures, the membrane is generally modeled using space membrane elements and the cables by space cable elements, with no sliding allowed between the membrane and the cables. ... In routine design of tensioned membrane structures, the membrane is generally modeled using space membrane elements and the cables by space cable elements, with no sliding allowed between the membrane and the cables. On the other hand, large deflections are expected and sliding between the membrane and the cables is inevitable. In the present paper, the general finite element code ABAQUS was employed to investigate the influence of cable sliding on membrane surface on the structural behavior. Three analysis models were devised to fulfill this purpose: (1) The membrane element shares nodes with the cable element; (2) The cable can slide on the membrane surface freely (without friction) and (3) The cable can slide on the membrane surface, but with friction between the cable and the membrane. The sliding problem is modeled using a surface - based contact algorithm. The results from three analysis models are compared, showing that cable sliding has only little influence on the structure shape and on the stress distributions in the membrane. The main influence of cable sliding may be its effect on the dynamic behavior of tensioned membrane structures. 展开更多
关键词 Membrane structures Shape finding Cutting pattern Cables Contact simulation
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Myristoylation of EV71 VP4 is Essential for Infectivity and Interaction with Membrane Structure 认领 引用 被引量：4
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作者 Jiaming Cao Meng Qu +8 位作者 Hongtao Liu Xuan Wan Fang Li Ali Hou Yan Zhou Bo Sun Linjun Cai Weiheng Su Chunlai Jiang 《Virologica Sinica》 SCIE CAS CSCD 2020年第5期599-613,共15页
The Enterovirus 71(EV71)VP4 is co-translationally linked to myristic acid at its amino-terminal glycine residue.However,the role of this myristoylation in the EV71 life cycle remains largely unknown.To investigate thi... The Enterovirus 71(EV71)VP4 is co-translationally linked to myristic acid at its amino-terminal glycine residue.However,the role of this myristoylation in the EV71 life cycle remains largely unknown.To investigate this issue,we developed a myristoylation-deficient virus and reporter(luciferase)pseudovirus with a Gly-to-Ala mutation(G2A)on EV71 VP4.When transfecting the EV71-G2 A genome encoding plasmid in cells,the loss of myristoylation on VP4 did not affect the expression of viral proteins and the virus morphology,however,it did significantly influence viral infectivity.Further,in myristoylation-deficient reporter pseudovirus-infected cells,the luciferase activity and viral genome RNA decreased significantly as compared to that of wild type virus;however,cytopathic effect and viral capsid proteins were not detected in myristoylation-deficient virus-infected cells.Also,although myristoylation-deficient viral RNA and proteins were detected in the second blind passage of infection,they were much fewer in number compared to that of the wild type virus.The replication of genomic RNA and negative-strand viral RNA were both blocked in myristoylation-deficient viruses,suggesting that myristoylation affects viral genome RNA release from capsid to cytoplasm.Besides,loss of myristoylation on VP4 altered the distribution of VP4-green fluorescent protein protein,which disappeared from the membrane structure fraction.Finally,a liposome leakage assay showed that EV71 myristoylation mediates the permeability of the model membrane.Hence,the amino-terminal myristoylation of VP4 is pivotal to EV71 infection and capsidmembrane structure interaction.This study provides novel molecular mechanisms regarding EV71 infection and potential molecular targets for antiviral drug design. 展开更多
关键词 Enterovirus 71(EV71) Myristoylation Infectivity Membrane structure
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Rigid-Membrane Method for Determining Stress Distribution of Membrane Structure Based on Laser Scanner System 认领 引用
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作者 ZHANG Xiangyu WANG Shasha +2 位作者 GONG Jinghai QIU Guozhi JI Tengfei 《Journal of Shanghai Jiaotong university(Science)》 EI 2024年第5期831-844,共14页
The determination of stress distribution is important for the safe use of membrane structures in practical engineering,which is difficult to be obtained by existing measurement methods and analysis methods.This paper ... The determination of stress distribution is important for the safe use of membrane structures in practical engineering,which is difficult to be obtained by existing measurement methods and analysis methods.This paper proposes a rigid-membrane method to determine the stress distribution of the membrane,which expands the stiffness of the membrane,applies the load of the membrane in equilibrium to the membrane shape of the equilibrium state,and performs nonlinear finite element analysis.The rigid-membrane method inversely acquires the stress distribution of the membrane based only on the shape and load distribution in equilibrium obtained from the numerical simulation of a membrane structure under water loads,and determines the modulus magnitude and mesh size required to rigidize the membrane.The accuracy of the rigid-membrane method is verified by the small differences between the stress distributions obtained from the proposed method and numerical simulations.The equilibrium membrane shape in the actual project can be scanned and reconstructed by the laser scanner system without any pre-processing,and the load is determined by the water level,internal pressure,etc.Based on the actual membrane shape and water load distribution,the rigid-membrane method determines the real stress distribution of the membrane in the test of flat membrane subjected to ponding water,which verifies that the rigid-membrane method is a practical method to determine the stress distribution only by the membrane shape and external load distribution. 展开更多
关键词 membrane structures rigid-membrane method laser scanner stress distribution
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OPTIMUM CUTTING ANALYSIS METHOD OF MEMBRANE STRUCTURE 认领 引用
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作者 邵小方 吴健生 《Transactions of Tianjin University》 CAS 1995年第2期189+186-187,189,共188页
By the optimum theory, a new cutting analytical method of the membrane structure is developed. The B-spline curve is applied to make smooth the boundary of the membrane strip. By this method, the cutting accuracy is i... By the optimum theory, a new cutting analytical method of the membrane structure is developed. The B-spline curve is applied to make smooth the boundary of the membrane strip. By this method, the cutting accuracy is improved. Finally, a cutting analysis example of a tension membrane structure is given. 展开更多
关键词 membrane structure cutting analysis optimum theory
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Dynamic Response of Tensile Membrane Structure under Coupling Effect of Wind and Rain 认领 引用
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作者 Weiju Song Heyuan Yang Jie Chen 《Journal of Applied Mathematics and Physics》 2024年第11期3816-3826,共11页
Because of the small stiffness and high flexibility, the tension membrane structure is easy to relax and damage or even destroy under the action of external load, which leads to the occurrence of engineering accidents... Because of the small stiffness and high flexibility, the tension membrane structure is easy to relax and damage or even destroy under the action of external load, which leads to the occurrence of engineering accidents. In this paper, the damped nonlinear vibration of tensioned membrane structure under the coupling action of wind and rain is approximately solved, considering the geometric nonlinearity of membrane surface deformation and the influence of air damping. Applying von Karman’s large deflection theory and D’Alembert’s principle, the governing equations are established for an analytical solution, and the experimental results are compared with the analytical results. The feasibility of this method is verified, which provides some theoretical reference for practical membrane structure engineering design and maintenance. 展开更多
关键词 Tension Membrane Structure Wind and Rain Coupling Effect Dynamic Response Nonlinear Vibration
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Deployment Characteristics of Braid Coated Bi-Convex Tape and Bi-SMA Convex Tape Booms for Deployable Membrane Structures 认领 引用
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《Journal of Mechanics Engineering and Automation》 2014年第1期52-62,共11页
The purpose of this paper is to demonstrate and investigate the concepts of new deployable boom systems, which consist of the BCON （braid coated bi-convex tape） boom and the SMA-BCON （braid coated bi-shape memory a... The purpose of this paper is to demonstrate and investigate the concepts of new deployable boom systems, which consist of the BCON （braid coated bi-convex tape） boom and the SMA-BCON （braid coated bi-shape memory alloy convex tape） boom. Both booms are developed for the deployable membrane structures such as solar sails, thin membrane solar array panels, deorbit mechanisms for small satellites and reflectors of space solar power satellite, etc. BCON booms can store around polygonal or cylindrical center hub, and the booms can deploy by the stepwise manner by releasing a constraint mechanism which pins the boons into two or three points for the total length. SMA-BCON booms are mainly developed for a square center body systems, and SMA is adapted on the bent po^nts of the booms where stored around each edge of the center hub. Through the deployment experiments of both booms, the stepwise deployment behavior and its tendency are obtained. The design concept of BCON boom and SMA-BCON hnnm i~ demonstrated through this study. 展开更多
关键词 Braid coated bi-convex tape boom braid coated bi-SMA convex tape boom membrane structures.
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Study on Aging Properties of FEVE Membrane Structure Materials 认领 引用
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作者 CUI Peng CHEN Nanliang 《外文科技期刊数据库（文摘版）工程技术》 2021年第7期646-648,共3页
In this paper, the FEVE membrane structure material as the research object, the performance of the artificial accelerated aging was studied. The mechanical properties, surface color change, stain resistance and surfac... In this paper, the FEVE membrane structure material as the research object, the performance of the artificial accelerated aging was studied. The mechanical properties, surface color change, stain resistance and surface gloss retention after aging were tested. The test results show that the tensile strength and surface gloss retention of FEVE film structure materials decrease with the increase of artificial accelerated aging time, but the decrease is not large. After aging for 3000h, the tensile strength and surface gloss retention of FEVE film structure materials can still be maintained at more than 85%, and the surface color basically does not change. After aging for 1000h, the stain resistance grade of the sample remains unchanged, and the stain resistance grade starts to decrease from 1500h, gradually decreasing from 4-5 to 3-4 grade. 展开更多
关键词 membrane structure FEVE aging resistance
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Computation method of zero-stress state of pneumatic stressed membrane structure 认领 引用 被引量：5
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作者 ZHAO JunZhao CHEN WuJun +1 位作者 FU GongYi LI RuiXiong 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第3期717-724,共8页
The whole analysis process of pneumatic stressed membrane structure contains nine states and seven analysis processes.The zero-stress state is the corner-stone of analysis and design of pneumatic stressed structure,an... The whole analysis process of pneumatic stressed membrane structure contains nine states and seven analysis processes.The zero-stress state is the corner-stone of analysis and design of pneumatic stressed structure,and has significant impact on the pre-stressed state and load state.According to the logical model of the whole numerical analysis process of pneumatic stressed structure,a numerical analysis method to solve the zero-stress state from the elasticized equilibrium state was firstly proposed,called linear compatibility matrix M-P inverse method.Firstly,the pneumatic membrane stressed structure was transferred into grid structure by using membrane link to simulate membrane surface.Secondly,on the basis of equilibrium matrix theory of pin joint structure and small deformation assumption,compatibility equation of system was established.Thirdly,the unstressed length and elongation of links were calculated from the tension and material parameters of elasticized equilibrium state.Finally,using compatibility matrix M-P inverse,the nodal displacement was calculated by solving compatibility equation,the configuration of zero-stress state could be obtained through reverse superposition,and the stress was released.According to the algorithm,the program was coded with MATLAB.The correctness and efficiency of this method were verified by several numerical examples,and it could be found that one elasticized equilibrium state corresponded to one configuration of the zero-stress state.The work has theoretical significance and practical guidance value for pneumatic membrane structural design. 展开更多
关键词 pneumatic stressed membrane structure elasticized equilibrium state the whole analysis process zero-stress state compatibility matrix M-P inverse
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Effects of Irradiation on the Structure-activity Relationship of Konjac Glucomannan Molecular Chain Membrane 认领 引用 被引量：2
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作者 吴春华 彭述辉 +6 位作者 温成荣 王丽霞 熊波 刘雅楠 范琳琳 姚闽娜 庞杰 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2012年第6期857-866,共10页
To know the effects of irradiation on the konjac glucomannan （KGM） molecular chain membrane, KGM membrane solution was treated with the irradiation dose of 0-20 kGy in this study, and the structure and properties of... To know the effects of irradiation on the konjac glucomannan （KGM） molecular chain membrane, KGM membrane solution was treated with the irradiation dose of 0-20 kGy in this study, and the structure and properties of KGM membrane were analyzed with Infrared spectrum, Raman spectrum, X-ray, SEM scanning and so on. The results revealed that the effects of different irradiation doses on the KGM molecular chain structure were different. Higher irradiation dose （20 kGy） resulted in partial damage against KGM membrane crystal structure, and there was no obvious change for the amorphous structure; with membrane property test, the tensile strength of KGM membrane gradually increased with the increase of irradiation dose and its elongation at break reduced, but these changes were not significant, WVP value reduced; with SEM, the membrane surface treated with irradiation was smoother even than the membrane without treatment. In addition, when increasing the irradiation dose, membrane surface became more even, and arrangement was more orderly and compact. KGM membrane nrooerties, and it is an ideal Irradiation modification could effectively improve the modification method. 展开更多
关键词 KGM molecular chain irradiation modification membrane structure mechanicalproperty
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Loading and wrinkling analysis of membrane structures 认领 引用 被引量：4
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作者 YANG QingShan TAN Feng WANG XiaoFeng 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第10期2597-2604,共8页
Loading analysis,as one of the most crucial procedures in the assessment of safety of the membrane structures,is to check the adequacy of structural stiffness and the extent of membrane stress and deformation,thus ens... Loading analysis,as one of the most crucial procedures in the assessment of safety of the membrane structures,is to check the adequacy of structural stiffness and the extent of membrane stress and deformation,thus ensuring the structural stability and avoiding the wrinkling of membrane structures.In this paper,the analysis procedures are presented and the wrinkling of membrane structure,representing a major behavioral performance of the structure,is included with the modified constitutive relationship method.As for the judgment of the membrane wrinkling,the principal stress-strain criteria are incorporated.Thereafter,an integrated algorithm is developed,in which the Newton-Raphson method and updated Lagrange formulation are adopted.With the proposed algorithm,two fabric roof structures are analyzed.Results show that the presented method is feasible and reliable. 展开更多
关键词 membrane structure loading analysis wrinkling analysis modified constitutive relationship
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FORMATION AND MICROSTRUCTURE OF POLYETHYLENE MICROPOROUS MEMBRANES THROUGH THERMALLY INDUCED PHASE SEPARATION 认领 引用 被引量：4
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作者 李文俊 袁又欣 CABASSO Israel 《Chinese Journal of Polymer Science》 SCIE EI CAS 1995年第1期7-19,共13页
Microporous membranes of low-high density polyethylene and their blends were prepared bythermally-induced phase separation of polymer/long-aliphatic chain alcohol (diluent) mixtures.The microstructures of this particu... Microporous membranes of low-high density polyethylene and their blends were prepared bythermally-induced phase separation of polymer/long-aliphatic chain alcohol (diluent) mixtures.The microstructures of this particular membrane, which depends on the diluent properties,polymer concentration and cooling rate, were observed by scanning electron microscopy.'Beehive-type,'leafy-like, and lacy porous structure morphologies can be formed,depending onthe blend composition and phase separation conditions, which were discussed by the polymer anddiluent crystallization processes. 展开更多
关键词 Microporous membrane Membrane preparation Membrane structure Phase separation Polyethylene membrane
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Altering membrane structure to enhance water permeability and performance of anion exchange membrane fuel cell 认领 引用 被引量：1
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作者 YANG Yue GAO XueQiang +7 位作者 SONG Wei YU HongMei LI WenBin QI ManMan HUANG He WANG PengHao FAN ZhiXuan SHAO ZhiGang 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2021年第2期414-422,共9页
Water management has been proven significant for enhancing both performance and durability of anion exchange membrane fuel cell. Besides searching new material, decreasing membrane thickness and modifying operation pa... Water management has been proven significant for enhancing both performance and durability of anion exchange membrane fuel cell. Besides searching new material, decreasing membrane thickness and modifying operation parameters, a simple and universal method of altering membrane structure is proposed in this work. Composite membranes made by unique processing method that includes both casting and electrospinning processes were compared with traditional casting membrane, all with the same thickness of 40 μm. Comparing to traditional casting membrane, the composite membrane put at proper position shows a higher water permeability, thus even more than 50% enhancement of the peak performance. 展开更多
关键词 AEMFC water management membrane structure electrospinning water permeation
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COUPLING COMPUTATION OF THE FLOW FIELD AND THE LARGE DEFORMATION OF MEMBRANE STRUCTURE OF STRATOSPHERE AIRSHIPS 认领 引用 被引量：1
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作者 LIU Jian-min 《Journal of Hydrodynamics》 SCIE EI 2008年第4期536-536,共1页
In this article, the mathematical model of the coupling of the three-dimensional fluid flow and the large deformation of membrane structure is established. The fluid-structure coupling interaction is simulated using t... In this article, the mathematical model of the coupling of the three-dimensional fluid flow and the large deformation of membrane structure is established. The fluid-structure coupling interaction is simulated using the computational codes developed by the authors. By analyzing the interactions of membrane and flow field, the aeroelasticity of the airship is detailed. All the results are adopted in the focused study of the stratosphere airship in trimmed state. 展开更多
关键词 three-dimensional flow large deformation of membrane structure fluid-structure coupling aeroelastics airships
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