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5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：
Horizontal vibration of offshore wind turbines supported by monopile-friction wheel composite foundation in multilayered saturated soil:Theoretical approach 认领 引用
1
作者 Zijian Yang Xinjun Zou +1 位作者 Minhua Zhou Lanyi Huang 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第2期1476-1495,共20页
With the continuous development of the offshore wind industry,the design concept of composite foundation has been given attention in the past decade.This paper presents an accurate method for investigating the horizon... With the continuous development of the offshore wind industry,the design concept of composite foundation has been given attention in the past decade.This paper presents an accurate method for investigating the horizontal vibration of monopile-friction wheel composite foundations in layered saturated soil.Firstly,the three-dimensional continuum mechanics theory with the range of linear elasticity is introduced to calculate the frictional resistance distributed on the upper soil surface.Then,the resistances of multilayered soils and inviscid seawater to the pile shaft under horizontal harmonic excitation are obtained using Novak's plane strain model,Biot's porous media theory and radiationwave theory.Thirdly,the expressions for the deformation,bending moment and internal force of the Euler-Bernoulli pile are derived using the boundary conditions with definitephysical meaning and transfer matrix method.By comparing with the results of 1g laboratory test and the idealized formula reported by the literature,the rationality and accuracy of the developed dynamical model can be verified.Finally,this paper conducts a series of worked examples to investigate the influencesof the elastic modulus and thickness of three-layer saturated soil and the location of interlayer soil on the horizontal dynamic vibration of composite foundation.The results show that an increase in elastic modulus of the surface soil is an effective way to improve the dynamic stability of the composite foundation in service conditions.The conclusions drawn from the numerical examples can develop some guidelines for the current foundation design of offshore wind turbines. 展开更多
关键词 Hybrid foundation Monopile-friction wheel composite foundation Offshore wind turbine Horizontal vibration characteristics Layered saturated soil Euler-Bernoulli beam Plane strain model
暂未订购 下载PDF
Research on Horizontal Vibration of Heavy-Weight Drill Pipes in Directional Drilling 认领 引用 被引量：3
2
作者 Jiang Wei Wang Lan Engineer, Drilling Department of Bohai Oil Corp of CNOOC, Tanggu, 300452, Tianjin Engineer, Well Testing Company of Bohai Oil Corp of CNOOC, Tanggu, 300452, Tianjin 《China Ocean Engineering》 SCIE 1992年第4期403-414,共12页
The mode of load and deformation of directional drilling string and the expression of trigonometric series of deflection equation are established by means of elastic deformation energy and of the vertical and horizont... The mode of load and deformation of directional drilling string and the expression of trigonometric series of deflection equation are established by means of elastic deformation energy and of the vertical and horizontal bending. A calculation formula for natural frequency of horizontal resonance and rotational speed is derived based on the calculation method by Ritz, with which analysis is made for the cause and affecting factors of the excessive abrasion of heavy-weight drill pipe in high-angle holes so as to provide reference and basis for rational selection of drilling parameters and drilling tools in the future high-angle directional drilling. 展开更多
关键词 directional drilling, heavy-weight drill pile, drill pipe wornout horizontal vibration, natural-frequency
暂未订购 下载PDF
One Computational Method of the Eigenvalues of the Horizontal Vibration Problem of Beam 认领 引用 被引量：1
3
作者 黄滨 《Journal of Southeast University(English Edition)》 CAS 2002年第3期277-282,共6页
This paper considers one computational method of the eigenvalues approximate value of the horizontal vibration problem of beam. The proof of our main result is based on the variational formula. First of all, Cauchy in... This paper considers one computational method of the eigenvalues approximate value of the horizontal vibration problem of beam. The proof of our main result is based on the variational formula. First of all, Cauchy inequality is used to obtain a basic inequality. Secondly, the functions of basis are made by Galerkin method, and the error estimates of eignevalues are obtained by Cauchy inequality. At last, the computational method of the approximate value of the eigenvalues turns out immediately, and acc... 展开更多
关键词 horizontal vibration problem of beam eigenvalue eigenfunction Galerkin method
暂未订购 下载PDF
Horizontal dynamic response of a large-diameter pipe pile considering the second-order effect of axial force 认领 引用 被引量：3
4
作者 Luan Lubao Ding Xuanming +2 位作者 Zhou Wei Zheng Changjie Qu Liming 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2018年第3期567-579,共13页
The second-order effect of axial force on horizontal vibrating characteristics of a large-diameter pipe pile is theoretically investigated.Governing equations of the pile-soil system are established based on elastodyn... The second-order effect of axial force on horizontal vibrating characteristics of a large-diameter pipe pile is theoretically investigated.Governing equations of the pile-soil system are established based on elastodynamics.Threedimensional wave equations of soil are decoupled through differential transformation and variable separation.Consequently,expressions of soil displacements and horizontal resistances can be obtained.An analytical solution of the pile is derived based on continuity conditions between the pile and soil,subsequently from which expressions of the complex impedances are deduced.Analyses are carried out to examine the second-order effect of axial force on the horizontal vibrating behavior of the pipe pile.Some conclusions can be summarized as follows： stiffness and damping factors are decreased with the application of axial force on the pile head; distributions of the pile horizontal displacement and rotation angle are regenerated due to the second-order effect of the applied axial force; and redistributions of the bending moment and shearing force occur due to the second-order effect of the applied axial force. 展开更多
关键词 axial force second-order effect horizontal vibration pipe pile analytical solution
暂未订购 下载PDF
HYDRAULIC ACTIVE GUIDE ROLLER SYSTEM FOR HIGH-SPEED ELEVATOR BASED ON FUZZY CONTROLLER 认领 引用 被引量：1
5
作者 FENG Yonghui ZHANG Jianwu 《Chinese Journal of Mechanical Engineering》 EI CAS 2007年第5期68-73,共6页
Increase of elevator speed brings about amplified vibrations of high-speed elevator.In order to reduce the horizontal vibrations of high-speed elevator,a new type of hydraulic active guide roller system based on fuzzy... Increase of elevator speed brings about amplified vibrations of high-speed elevator.In order to reduce the horizontal vibrations of high-speed elevator,a new type of hydraulic active guide roller system based on fuzzy logic controller is developed.First the working principle of the hydraulic guide system is introduced,then the dynamic model of the horizontal vibrations for elevator cage with active guide roller system and the mathematical model of the hydraulic system are given.A fuzzy logic controller for the hydraulic system is designed to control the hydraulic actuator.To improve the control performance,preview compensation for the controller is provided.Finally,simulation and experiments are executed to verify the hydraulic active guide roller system and the control strategy.Both the simulation and experimental results indicate that the hydraulic active guide roller system can reduce the horizontal vibrations of the elevator effectively and has better effects than the passive one,and the fuzzy logic controller with preview compensation can give superior control performance. 展开更多
关键词 High-speed elevator Horizontal vibrations Hydraulic active guide roller system Fuzzy logic control
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