| 软支承条件下车辆-基础系统的动力学建模与分析 |
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| 引用本文： | 朱怀亮,胡开封,余磊,谢严. 软支承条件下车辆-基础系统的动力学建模与分析[J]. 南昌大学学报(工科版), 2007, 29(3): 212-214,238 |
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| 作者姓名： | 朱怀亮 胡开封 余磊 谢严 |
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| 作者单位： | 上海大学,力学系,上海,200444;上海市应用数学和力学研究所,上海,200072 |
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| 基金项目： | 上海市自然科学基金 , 上海大学校科研和教改项目 |
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| 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.
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| 关 键 词： | 非线性 不对称 动力学 瞬态响应 |
| 文章编号： | 1006-0456（2007）03-0212-03 |
| 收稿时间： | 2007-02-28 |
| 修稿时间： | 2007-02-28 |
Dynamic Simulation and Analysis of the Vehicle-foundation System with Nonlinear Soft Supports |
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| ZHU Huai-liang,HU Kai-feng,YU Lei,XIE Yan. Dynamic Simulation and Analysis of the Vehicle-foundation System with Nonlinear Soft Supports[J]. Journal of Nanchang University(Engineering & Technology Edition), 2007, 29(3): 212-214,238 |
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| Authors: | ZHU Huai-liang HU Kai-feng YU Lei XIE Yan |
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| Abstract: | 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. |
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| Keywords: | nonlinear non-symmetric dynamics transient response |
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