软支承条件下车辆—基础系统的动力学建模与分析

英文篇名：Dynamic Simulation and Analysis of the Vehicle-foundation System with Nonlinear Soft Supports
中文刊名：南昌大学学报(工科版)
英文刊名：Journal of Nanchang University(Engineering & Technology)
作者：朱怀亮 ; 胡开封 ; 余磊 ; 谢严
英文作者：ZHU Huai-liang1 ; HU Kai-feng2 ; YU Lei2 ; XIE Yan2(1.Department of Mechanics ; Shanghai University ; Shanghai 200444 ; China ; (2.Shanghai Institute of Applied Math.& Mech. ; Shanghai 200072 ; China)
中文关键词：非线性 ; 不对称 ; 动力学 ; 瞬态响应
英文关键词：nonlinear ; non-symmetric ; dynamics ; transient response
出版日期：2007-09-15
机构：上海大学力学系,上海市应用数学和力学研究所,上海市应用数学和力学研究所,上海市应用数学和力学研究所上海200444,上海200072,上海200072,上海200072
年：2007
期：03
出版单位：南昌大学学报(工科版)

摘要

研究软支承下的车辆-基础系统耦合动力学响应.将基础视为有限个离散点支承的Euler-Beinoulli梁,支承则模拟为具有非线性、不对称特性的弹性元件和阻尼器,利用分段线性化方法描述弹性支承的非线性刚度和阻尼特性,根据动力学原理和假设振型方法建立系统的运动方程,基于Newmark直接积分方法编制MATLAB二次开发函数,数值求解系统动力学响应,分析了支承约束非线性对系统动力学特性的影响.
A method is presented for the dynamic response of the vehicle-foundation system with nonlinear soft supports.The foundation of vehicle is modeled as a multi-span Euler-Beinoulli beam on nonlinear,asymmetric supports and dampers.The nonlinear characteristics of supports and dampers are simulated by piecewise-linear method,and equations of motion of the system are formulated using Lagrange principle and assumed mode method.Numerical simulations are performed for some sample qroblems and the transient responses of vehicle-foundation system are discussed.It shows the difference in dynamic behavior of multi-span beams between the linear and nonlinear supports and dampers.

引文

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