期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到17篇文章
< 1 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Dynamical analysis and nonlinear vibration control of integrated composite beam structure in thermal environment 认领 引用
1
作者 Donghui LI Faming ZHANG +4 位作者 Qunfang LI Shang GAO Jian ZANG Yewei ZHANG Fengtian YANG 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第1期278-300,共23页
Traditional dynamic analysis of mechanical structures,often limited to individual beams or plates,fails to fully capture their dynamic behaviors.In systems where space and mass are constrained,such as the battery supp... Traditional dynamic analysis of mechanical structures,often limited to individual beams or plates,fails to fully capture their dynamic behaviors.In systems where space and mass are constrained,such as the battery support structures in electric aircraft,conventional absorbers and isolators are insufficient for effective vibration control.This study simplifies the battery support structure of electric aircraft as an integrated composite beam consisting of three interconnected beams,and investigated its structural dynamics properties and nonlinear vibration control under thermal conditions caused by battery heat.The nonlinear vibration control is performed using the Nitinol steel wire ropes(Ni Ti-ST),with nonlinear damping properties.The natural frequencies of system are determined using the Rayleigh-Ritz technique.Theoretical results are validated through both Finite Element Method(FEM)and hammer tests.Moreover,the dynamic equations are derived using the Lagrange method and discretized via the Galerkin Truncation Method(GTM).The Harmonic Balance Method(HBM)is used to evaluate the vibration responses of the integrated model,with further verification through the Runge-Kutta Method(RKM).The experiments are conducted to corroborate the theoretical analysis.The results show that the system frequency changes in stages with the increase of the stiffness of the integrated composite beam connection.Especially in the case of varying environments,as the temperature increases,the frequency of system will first increase to a certain maximum value and then gradually decrease.Furthermore,the NiTi-ST effectively reduces vibration in the integrated composite beam,particularly under varying temperatures and external excitations. 展开更多
关键词 Composite laminated beam Dynamics characteristic Integrated composite beam Modal experiment NiTiNOL steel wire rope Nonlinear vibration control
暂未订购 下载PDF
Microstructure and Texture Evolution of Ti65 Alloy during Thermomechanical Processing 认领 引用 被引量：1
2
作者 Jian Zang Jianrong Liu +4 位作者 Qingjiang Wang Haibing Tan Bohua Zhang Xiaolin Dong Zibo Zhao 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2025年第1期107-120,共14页
The initial microstructure of titanium alloy in theα+βphase region is pivotal in dictating the performance of the final products after thermomechanical processing.Microstructures and textures of three rods,each prep... The initial microstructure of titanium alloy in theα+βphase region is pivotal in dictating the performance of the final products after thermomechanical processing.Microstructures and textures of three rods,each prepared through distinct pretreatments,were systematically analyzed.Morphological analysis reveals that while both thickαplatelets and coarse priorβgrains impede the spheroidization of lamellar structures,the influence of the former is more pronounced.Variations inαplatelet thickness priorβgrain size exhibit limited impact on the macro-texture type after deformation and annealing.The proportion of low-angle interfaces between the c-axis of the primaryαphase and thedirection of the priorβgrains was elevated in rods with thicker platelets compared to thinner ones. 展开更多
关键词 Ti65 alloy Thermomechanical processing αplatelet thickness Priorβgrain size Microstructure evolution Texture
暂未订购 下载PDF
Dynamic design of a nonlinear energy sink with NiTiNOL-steel wire ropes based on nonlinear output frequency response functions 认领 引用 被引量：11
3
作者 Yewei ZHANG Kefan XU +3 位作者 Jian ZANG Zhiyu NI Yunpeng ZHU Liqun CHEN 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2019年第12期1791-1804,共14页
A novel vibration isolation device called the nonlinear energy sink(NES)with NiTiNOL-steel wire ropes(NiTi-ST)is applied to a whole-spacecraft system.The NiTi-ST is used to describe the damping of the NES,which is cou... A novel vibration isolation device called the nonlinear energy sink(NES)with NiTiNOL-steel wire ropes(NiTi-ST)is applied to a whole-spacecraft system.The NiTi-ST is used to describe the damping of the NES,which is coupled with the modified Bouc-Wen model of hysteresis.The NES with NiTi-ST vibration reduction principle uses the irreversibility of targeted energy transfer(TET)to concentrate the energy locally on the nonlinear oscillator,and then dissipates it through damping in the NES with NiTi-ST.The generalized vibration transmissibility,obtained by the root mean square treatment of the harmonic response of the nonlinear output frequency response functions(NOFRFs),is first used as the evaluation index to analyze the whole-spacecraft system in the future.An optimization analysis of the impact of system responses is performed using different parameters of NES with NiTi-ST based on the transmissibility of NOFRFs.Finally,the effects of vibration suppression by varying the parameters of NiTi-ST are analyzed from the perspective of energy absorption.The results indicate that NES with NiTi-ST can reduce excessive vibration of the whole-spacecraft system,without changing its natural frequency.Moreover,the NES with NiTi-ST can be directly used in practical engineering applications. 展开更多
关键词 nonlinear energy sink(NES) vibration isolation NiTiNOL-steel wire rope (NiTi-ST) nonlinear output frequency response function(NOFRF) root mean square transmissibility
暂未订购 下载PDF
Integration of a Nonlinear Vibration Absorber and Levitation Magnetoelectric Energy Harvester for Whole-Spacecraft Systems 认领 引用 被引量：7
4
作者 Ye-Wei Zhang Zhi-Wei Fang +3 位作者 Shi-Lei Wang Zhi-Yu Ni Jian Zang Bo Fang 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2019年第3期298-309,共12页
This paper presents a new device integrating a nonlinear vibration absorber with a levitation magnetoelectric energy harvester for whole-spacecraft systems. This device effectively reduces vibration and has a stronger... This paper presents a new device integrating a nonlinear vibration absorber with a levitation magnetoelectric energy harvester for whole-spacecraft systems. This device effectively reduces vibration and has a stronger energy harvesting capability than the existing systems. It harvests energy from a wide frequency range and has a high output voltage. The harvested energy is determined by magnetic field strength, excitation frequency, and resistive load. The change in the magnetic field strength has the least impact on the output voltage. The vibration reduction effects and harvested energy of the system are analyzed with an approximate analytical method that combines the harmonic balance approach and the pseudo-arclength continuation algorithm. The results of the Runge-Kutta method are nearly consistent with those of the approximate analytical method. Moreover, the effects of the excitation frequency, resistive load, and parameters of the nonlinear energy sink on the system vibration response and energy harvesting are analyzed. 展开更多
关键词 Levitation magnetoelectric energy harvester Whole spacecraft Nonlinear energy sink Vibration reduction
暂未订购 下载PDF
Dynamics Analysis of Active Variable Stiffness Vibration Isolator for Whole-Spacecraft Systems Based on Nonlinear Output Frequency Response Functions 认领 引用 被引量：6
5
作者 Kefan Xu Yewei Zhang +2 位作者 Yunpeng Zhu Jian Zang Liqun Chen 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2020年第6期731-743,共13页
In order to improve the harsh dynamic environment experienced by heavy rockets during different external excitations,this study presents a novel active variable stiffness vibration isolator(AVS-VI)used as the vibratio... In order to improve the harsh dynamic environment experienced by heavy rockets during different external excitations,this study presents a novel active variable stiffness vibration isolator(AVS-VI)used as the vibration isolation device to reduce excessive vibration of the whole-spacecraft isolation system.The AVS-VI is composed of horizontal stiffness spring,positive stiffness spring,parallelogram linkage mechanism,piezoelectric actuator,acceleration sensor,viscoelastic damping,and PID active controller.Based on the AVS-VI,the generalized vibration transmissibility determined by the nonlinear output frequency response functions and the energy absorption rate is applied to analyze the isolation performance of the whole-spacecraft system with AVS-VI.The AVS-VI can conduct adaptive vibration suppression with variable stiffness to the whole-spacecraft system,and the analysis results indicate that the AVS-VI is efTective in reducing the extravagant vibration of the whole-spacecraft system,where the vibration isolation is decreased up to above 65%under different acceleration excitations.Finally,different parameters of AVS-VI are considered to optimize the whole-spacecraft system based on the generalized vibration transmissibility and the energy absorption rate. 展开更多
关键词 Vibration isolation Active variable stiffness vibration isolator Nonlinear output frequency response functions(NOFRFs) Transmissibility
暂未订购 下载PDF
Theoretical and experimental investigations on an X-shaped vibration isolator with active controlled variable stiffness 认领 引用 被引量：3
6
作者 Zeyu CHAI J.T.HAN +3 位作者 Xuyuan SONG Jian ZANG Yewei ZHANG Zhen ZHANG 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2024年第8期1371-1386,共16页
A novel X-shaped variable stiffness vibration isolator(X-VSVI)is proposed.The Runge-Kutta method,harmonic balance method,and wavelet transform spectra are introduced to evaluate the performance of the X-VSVI under var... A novel X-shaped variable stiffness vibration isolator(X-VSVI)is proposed.The Runge-Kutta method,harmonic balance method,and wavelet transform spectra are introduced to evaluate the performance of the X-VSVI under various excitations.The layer number,the installation angle of the X-shaped structure,the stiffness,and the active control parameters are systematically analyzed.In addition,a prototype of the X-VSVI is manufactured,and vibration tests are carried out.The results show that the proposed X-VSVI has a superior adaptability to that of a traditional X-shaped mechanism,and shows excellent vibration isolation performance in response to different amplitudes and forms of excitations.Moreover,the vibration isolation efficiency of the device can be improved by appropriate adjustment of parameters. 展开更多
关键词 bionic vibration isolation X-shaped structure variable stiffness structure nonlinear dynamics prototype experiment
暂未订购 下载PDF
Aeroelastic Properties and Nonlinear Vibration Control of a Simply-Supported Lattice Sandwich Beam Embedded with Nitinol-Steel Wire Ropes 认领 引用 被引量：3
7
作者 Yewei Zhang Xichao Chen +1 位作者 Donghui Li Jian Zang 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2022年第5期755-764,共10页
As a novel vibration absorber,Nitinol-steel wire rope(NiTi-ST)has rarely been studied on vibration suppression for lattice sandwich beams in supersonic airflow.In this paper,NiTi-ST with nonlinear stiffness and hyster... As a novel vibration absorber,Nitinol-steel wire rope(NiTi-ST)has rarely been studied on vibration suppression for lattice sandwich beams in supersonic airflow.In this paper,NiTi-ST with nonlinear stiffness and hysteretic damping is embedded in a lattice sandwich beam to control the beam's vibration.The nonlinear restoring and hysteretic damping force of NiTi-ST are treated as polynomials.The dynamic equation is established based on Hamilton's principle.The amplitude responses of the beam with different NiTi-ST configurations are calculated.The vibration-suppression effects and energy dissipation of lattice sandwich beam with different NiTi-ST configurations under different air velocities are also compared.The frequency-domain and time-domain methods are used to analyze the structural aeroelastic properties.Simulation results show that the use of NiTi-ST can significantly suppress excessive vibration of a lattice sandwich beam in supersonic airflow. 展开更多
关键词 Lattice sandwich beam Nonlinear vibration control Nitinol-steel wire rope Supersonic airflow
暂未订购 下载PDF
A novel way for vibration control of FGM fluid-conveying pipes via NiTiNOL-steel wire rope 认领 引用 被引量：2
8
作者 Jian ZANG Ronghuan XIAO +1 位作者 Yewei ZHANG Liqun CHEN 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2023年第6期877-896,共20页
In this study,a coupling model of fluid-conveying pipes made of functionally graded materials(FGMs)with NiTiNOL-steel(NiTi-ST)for vibration absorption is investigated.The vibration responses of the FGM fluid-conveying... In this study,a coupling model of fluid-conveying pipes made of functionally graded materials(FGMs)with NiTiNOL-steel(NiTi-ST)for vibration absorption is investigated.The vibration responses of the FGM fluid-conveying pipe with NiTi-ST are studied by the Galerkin truncation method(GTM)and harmonic balance method(HBM).The harmonic balance solutions and the numerical results are consistent.Also,the linearized stability of the structure is determined.The effects of the structure parameters on the absorption performance are also studied.The results show that the NiTi-ST is an effective means of vibration absorption.Furthermore,in studying the effect of the NiTi-ST,a closed detached response(CDR)is first observed.It is noteworthy that the CDR may dramatically change the vibration amplitude and that the parameters of the NiTi-ST may determine the emergence or disappearance of the CDR.This vibration absorption device can be extended to offer more general vibration control in engineering applications. 展开更多
关键词 NiTiNOL-steel(NiTi-ST) functionally graded material(FGM)fluid-conveying pipe vibration absorption harmonic balance method(HBM) closed detached response(CDR)
暂未订购 下载PDF
Revealing the interlaminar shear failure behavior of unidirectional laminate under combined compression-shear loads 认领 引用 被引量：2
9
作者 Yueran Zhao Jian Zang +4 位作者 Ben Jia Junchao Yang Xiaopeng Wan Wenzhi Wang Xiangming Chen 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第26期110-119,共10页
Due to the coupling effects between stresses in different directions,the mechanical behavior of an ad-vanced composite material under multiaxial loading is extremely complex.In this study,the influence of through-thic... Due to the coupling effects between stresses in different directions,the mechanical behavior of an ad-vanced composite material under multiaxial loading is extremely complex.In this study,the influence of through-thickness compressive stress on the interlaminar shear performance of a carbon fiber-reinforced composite was experimentally investigated.Hollow cylindrical unidirectional laminate specimens were fabricated to conduct combined compression-shear tests,and the fracture morphologies of the specimens were characterized to reveal their failure behavior.The results indicate that a moderate compression load significantly enhanced the shear properties of the laminate by inhibiting crack propagation and improv-ing the friction effect.The shear strength and modulus of a laminate specimen subjected to combined stresses improved up to a maximum of 76%and 231%,respectively,over those of an equivalent specimen subjected to pure shear.However,as the applied through-thickness load approached the compressive strength of the laminate,the specimen shear capacity began to decline owing to the transition of frac-ture mechanisms.Indeed,the specimens exhibited mixed failure modes corresponding to the different stress states,which were induced by the combined effects of through-thickness compressive and shear stresses.As the applied through-thickness compressive stress increased,the dominant failure mode of the laminate specimen changed from fiber-matrix debonding to fiber shearing and then to fiber break-age,resulting in various shear performances. 展开更多
关键词 Fiber-reinforced composites Mechanical behavior Multiaxial loading Failure analysis
暂未订购 下载PDF
A Supersonic Aerodynamic Energy Harvester:A Functionally Graded Material Beam with a Giant Magnetostrictive Thin Film 认领 引用 被引量：2
10
作者 Zhengqi Qin Weijiao Chen +1 位作者 Jian Zang Yewei Zhang 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2022年第1期161-173,共13页
In this study,a simply supported functionally graded material beam with a giant magnetostrictive thin film(GMF)was selected as an energy harvester.Based on the theory of large deformation and the Villari effect of GMF... In this study,a simply supported functionally graded material beam with a giant magnetostrictive thin film(GMF)was selected as an energy harvester.Based on the theory of large deformation and the Villari effect of GMF,piston theory was used to simulate the dynamic equation of the whole structure under supersonic aerodynamic pressure and in a thermal environment by using Hamilton^principle,and the energy harvesting effect of GMF was simulated by using a Runge-Kutta algorithm.Below the critical flutter velocity,the maximum voltage output and energy harvesting results were discussed as they were affected by external factors such as the geometric model of structure parameters,slenderness ratio,gradient index,number of turns of an electromagnetic coil,airflow velocity,and temperature.The electromechanical coupling coefficient/C33 was 71%.The results show that this proposed harvester can achieve an optimal harvesting effect by adjusting the parameters appropriately,and collect energy in thermal and supersonic environments using the GMF,which provides power to sensors of the health monitoring system of the aircraft’s own structure. 展开更多
关键词 Supersonic aerodynamic energy harvesting Functionally graded material(FGM)beam Giant magnetostrictive thin film(GMF)
暂未订购 下载PDF
Complex dynamics of a harmonically excited structure coupled with a nonlinear energy sink 认领 引用 被引量：25
11
作者 Jian Zang Li-Qun Chen 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2017年第4期801-822,共22页
Nonlinear behaviors are investigated for a structure coupled with a nonlinear energy sink. The structure is linear and subject to a harmonic excitation, modeled as a forced single-degree-of-freedom oscillator. The non... Nonlinear behaviors are investigated for a structure coupled with a nonlinear energy sink. The structure is linear and subject to a harmonic excitation, modeled as a forced single-degree-of-freedom oscillator. The nonlinear energy sink is modeled as an oscillator consisting of a mass,a nonlinear spring, and a linear damper. Based on the numerical solutions, global bifurcation diagrams are presented to reveal the coexistence of periodic and chaotic motions for varying nonlinear energy sink mass and stiffness. Chaos is numerically identified via phase trajectories, power spectra,and Poincaré maps. Amplitude-frequency response curves are predicted by the method of harmonic balance for periodic steady-state responses. Their stabilities are analyzed.The Hopf bifurcation and the saddle-node bifurcation are determined. The investigation demonstrates that a nonlinear energy sink may create dynamic complexity. 展开更多
关键词 bifurcation excited saddle harmonic chaotic oscillator stiffness freedom branches modeled
暂未订购 下载PDF
Nonlinear Vibration Isolation of Spacecraft System by a Bionic Variable-Stiffness Device Enhanced by Electromagnetic Component 认领 引用 被引量：1
12
作者 Zeyu Chai Xuyuan Song +1 位作者 Jian Zang Yewei Zhang 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2023年第6期921-932,共12页
This study addresses the modified bionic vibration isolation technology by introducing the electromagnetic system to simulate biological damping characteristics.It has been proven effective in improving the vibration ... This study addresses the modified bionic vibration isolation technology by introducing the electromagnetic system to simulate biological damping characteristics.It has been proven effective in improving the vibration environment.By assuming the spacecraft-adapter system as a two-degree-of-freedom system,an excellent simplified model can be derived.The novel bionic vibration isolation device(ABVS-EMVI),which combines an active bionic variable-stiffness device(ABVSVI)with the electromagnetic system,is proposed for the purpose of isolating vibration and harvesting energy at the same time.The dynamic equations of the spacecraft-adapter system with ABVS-EMVI are obtained using the Taylor expansion within the framework of the Lagrange equation,and the harmonic balance method is introduced to acquire the amplitude and voltage response of the system.The results indicate that the electromagnetic system can enhance the vibration isolation performance and provide energy harvesting capabilities.After confirming the ability of ABVS-EMVI to deal with different forms and amplitudes of excitation,the performance of vibration isolation and energy harvesting is investigated in terms of various parameters,and several new conclusions have been drawn. 展开更多
关键词 Bionic structure Electromagnetic system Vibration isolation Energy harvesting
暂未订购 下载PDF
Resonance response of fluid-conveying pipe with asymmetric elastic supports coupled to lever-type nonlinear energy sink 认领 引用 被引量：9
13
作者 Runqing CAO Zhijian WANG +1 位作者 Jian ZANG Yewei ZHANG 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2022年第12期1873-1886,共14页
This paper studies the vibration absorber for a fluid-conveying pipe,where the lever-type nonlinear energy sink(LNES)and spring supports are coupled to the asymmetric ends of the system.The pseudo-arc-length method in... This paper studies the vibration absorber for a fluid-conveying pipe,where the lever-type nonlinear energy sink(LNES)and spring supports are coupled to the asymmetric ends of the system.The pseudo-arc-length method integrated with the harmonic balance method is used to investigate the steady-state responses analytically.Meanwhile,the numerical solution of the fluid-conveying pipe is calculated with the Runge-Kutta method.Moreover,a special response,called the collapsible closed detached response(CCDR),is first observed when the vibration response of mechanical structures is studied.Then,the relationship between the CCDR and the main structure primary response(PR)is obtained.In addition,the closed detached response(CDR)is also observed to research the resonance response of the fluid-conveying pipe.The appearance of either the CCDR or the CDR does affect the resonance attenuation.Furthermore,the mentioned two phenomena underline that the trend of vibration responses under external excitation goes continuous and gradual.Besides,the main advantage of the LNES is presented by contrasting the LNES with the nonlinear energy sink(NES)coupled to the same pipe system.It is found that the LNES can reduce the resonance response amplitude by 91.33%. 展开更多
关键词 fluid-conveying pipe vibration attenuation collapsible closed detached response(CCDR) lever-type nonlinear energy sink(LNES) elastic support
暂未订购 下载PDF
Optimum design and experiment of composite leaf spring landing gear for electric aircraft 认领 引用 被引量：5
14
作者 Donghui LI Zhenwei FAN +2 位作者 Yewei ZHANG Jian ZANG Fengtian YANG 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2020年第10期2649-2659,共11页
The composite leaf spring landing gear of an electric aircraft is optimized.With the strength and workability as constraints and the minimum structural weight as an objective,the two-stage optimization of the leaf spr... The composite leaf spring landing gear of an electric aircraft is optimized.With the strength and workability as constraints and the minimum structural weight as an objective,the two-stage optimization of the leaf spring landing gear with glass fiber unidirectional prepreg is carried out using a genetic algorithm,namely,the optimization of continuous thickness of layup,and the optimization of the layup sequence and discrete thickness.In the optimization process,the ground loads are calculated according to the structural stiffness of each chromosome,thus the stiffness constraints are relaxed,and the optimization results are compared with those using stiffness constraints.The static experiment verification reveals that the numerical simulation and experimental results are consistent,that is,the optimized leaf spring meets the strength requirements.The results show that the leaf spring landing gear based on two-stage optimization method achieves the objective of weight reduction. 展开更多
关键词 Composite materials Genetic algorithm Laminate optimization Landing gear Static experiment
暂未订购 下载PDF
卡培他滨维持治疗局部晚期鼻咽癌的回顾性研究 认领 引用 被引量：7
15
作者 许曼 柴广金 +6 位作者 石梅 臧健 罗山泉 王建华 肖锋 龙晓丽 许林 《中国肿瘤临床》 CAS CSCD 北大核心 2020年第10期507-512,共6页
目的:回顾性分析中国西北地区非高发区N2~3期鼻咽癌根治性放化疗后序贯卡培他滨维持化疗的疗效,以明确卡培他滨维持化疗在局部晚期鼻咽癌治疗中的价值。方法:选取2014年1月至2016年12月空军军医大学第一附属医院初诊初治、经病理确诊为... 目的:回顾性分析中国西北地区非高发区N2~3期鼻咽癌根治性放化疗后序贯卡培他滨维持化疗的疗效,以明确卡培他滨维持化疗在局部晚期鼻咽癌治疗中的价值。方法:选取2014年1月至2016年12月空军军医大学第一附属医院初诊初治、经病理确诊为鼻咽癌N2~3期的患者,给予诱导化疗2~3个周期后联合同期放化疗,研究组(维持化疗组)在根治性放化疗后继续予以卡培他滨维持化疗4个周期,对照组(未维持化疗组)观察随访。比较两组患者的生存差异,评价两种方案的不良反应及顺应性。结果:共179例患者纳入本研究,研究组84例,对照组95例。两组病例一般临床资料均衡。全组中位随访时间44.4(5.97~70.26)个月,研究组与对照组3年无远处转移生存率(distant metastasis-free survival,DMFS)分别为79.3%、68.1%(χ~2=3.898,P=0.048),3年无病生存率(disease-free survival,DFS)分别为75.6%、64.2%(χ~2=5.428,P=0.020),差异具有统计学意义。急性不良反应及晚期不良反应两组间差异无统计学意义(P>0.05),卡培他滨特异性药物不良反应均为2级以下。结论:在中国西北地区非高发区N2~3期鼻咽癌患者中,根治性放化疗后序贯卡培他滨维持治疗后3年DMFS和3年DFS获益,患者治疗耐受性、依从性良好,未增加明显的不良反应。 展开更多
关键词 鼻咽癌 非高发区 卡培他滨 维持化疗 疗效
暂未订购 下载PDF
风载作用下的超磁致伸缩能量采集与非线性振动控制一体化分析 认领 引用
16
作者 王振宇 秦政琪 +1 位作者 臧健 张振 《声学与振动》 2019年第4期145-154,共10页
研究了风载作用下非线性能量阱(NES)减振和超磁致伸缩材料(GMM)能量采集一体化机理,该系统拥有良好的振动抑制效果和风载作用下的能量采集性能。利用Hamilton原理建立了位移驱动下的数学模型,并用Runge-Kutta算法进行了数值仿真,考察该... 研究了风载作用下非线性能量阱(NES)减振和超磁致伸缩材料(GMM)能量采集一体化机理,该系统拥有良好的振动抑制效果和风载作用下的能量采集性能。利用Hamilton原理建立了位移驱动下的数学模型,并用Runge-Kutta算法进行了数值仿真,考察该系统的振动抑制效果,分析了超磁致(GMM)结构的能量采集效应。最后,进行了质量和风载相关参数的对比分析。研究结果表明,风载作用下的超磁致伸缩能量采集与非线性振动控制一体化系统具有良好的减振和能量采集效果。 展开更多
关键词 单自由度系统 非线性振动控制 非线性能量阱(NES) 风载能量采集 超磁致伸缩材料(GMM)
暂未订购 下载PDF
半主动控制隔振与非线性能量采集一体化分析 认领 引用
17
作者 杨豪 臧建 倪智宇 《力学研究》 2019年第2期126-138,共13页
将采用平衡逻辑控制原理的半主动控制隔振应用到单自由度振动系统中,通过时域、主系统能量耗散和传递率图像研究了该系统的减振性能,结果显示其具有十分优秀的减振性能。将非线性能量采集应用到单自由度振动系统中,通过时域和电流采集... 将采用平衡逻辑控制原理的半主动控制隔振应用到单自由度振动系统中,通过时域、主系统能量耗散和传递率图像研究了该系统的减振性能,结果显示其具有十分优秀的减振性能。将非线性能量采集应用到单自由度振动系统中,通过时域和电流采集图像研究了该系统的减振性能,结果显示其不但拥有优秀的减振性能,而且同时也可以稳定的输出电流。最后将半主动控制隔振与非线性能量采集结合在一个系统中,对该系统在减振和电能采集方面进行了分析,结果显示其不但拥有更优异的减振性能,而且在振动开始后其能量采集装置在较宽的频率范围内都可以稳定的为半主动控制装置输出电能。在两个装置共同作用下该一体化系统不仅拥有更好的减振性能,而且还可以做到完全自给不依赖于外界环境而工作。在条件严酷、维护周期较长的工程环境中有很好的应用前景。 展开更多
关键词 半主动控制 非线性能量采集 传递率 减振
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈