| 线性强化材料双层索的非线性自振特性研究 |
| |
| 引用本文： | 吴晓,杨立军,黎大志,文会军.线性强化材料双层索的非线性自振特性研究[J].空间结构,2010,16(1). |
| |
| 作者姓名： | 吴晓 杨立军 黎大志 文会军 |
| |
| 作者单位： | 湖南文理学院土木建筑工程学院,湖南,常德,415000 |
| |
| 基金项目： | 湖南“十一五”重点建设学科资助项目(湘教通[2006]180号);;湖南省科技计划资助项目(2008FJ3067);;湖南省普通高校青年骨干教师资助项目(湘教通[2007]256号) |
| |
| 摘 要： | 研究了线性强化材料双层索在均布静恒载作用下的非线性自振.采用Galerkin原理及改进的L-P法求得了线性强化材料双层索非线性自振的近似解及双层索层间接触力的近似解.结合算例讨论分析了线性强化、温度、振幅等因素对双层索非线性自振及双层索层间接触力的影响,为双层索系屋盖的抗震设计提供了理论依据.算例表明,双层索固有频率随着温度的升高而减小,其振动具有较强的非线性,自振频率随着振幅发生变化,其非线性振动呈现硬弹簧特性,双层索的非线性自振频率高于线性频率,双层索在线性强化状态时的非线性自振频率低于在线性弹性状态时的非线性自振频率.
|
| 关 键 词： | 双层索 线性强化 非线性 层间接触力 |
Nonlinear natural vibration property of double-layer cable system with linear hardening material |
| |
| WU Xiao,YANG Li-jun,LI Da-zhi,WEN Hui-jun.Nonlinear natural vibration property of double-layer cable system with linear hardening material[J].Spatial Structures,2010,16(1). |
| |
| Authors: | WU Xiao YANG Li-jun LI Da-zhi WEN Hui-jun |
| |
| Affiliation: | College of Architecture & Civil Engineering/a>;Hunan University of Arts and Science/a>;Changde 415000/a>;China |
| |
| Abstract: | The nonlinear natural vibration of double-layer cable system with linear hardening material under constant load was studied.The approximate solution of nonlinear natural vibration of double-layer cable system with linear hardening material and the cable's contacting forces were given by use of the Galerkin principle and improved L-P method.Then parameters that affect its nonlinear vibration and the cable's contacting forces,such as the amount of temperature changing,linear hardening,as well as vibrational a... |
| |
| Keywords: | double-layer cable system linear hardening nonlinearity cable's contacting forces |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
