| 柔性多体系统接触碰撞动力学研究 |
| |
| 引用本文： | 丁遂亮,洪嘉振. 柔性多体系统接触碰撞动力学研究[J]. 上海交通大学学报, 2003, 37(12): 1927-1930 |
| |
| 作者姓名： | 丁遂亮 洪嘉振 |
| |
| 作者单位： | 上海交通大学,建筑工程与力学学院,上海,200030 |
| |
| 基金项目： | 国家自然科学基金资助项目(19832040)，教育部博士点基金项目(2000024818) |
| |
| 摘 要： | 用有限元方法对柔性系统的接触碰撞问题进行了数值仿真计算．以柔性杆与刚块纵向碰撞为例，建立了接触碰撞动力学模型，利用有限元方法建立了接触碰撞期间的动力学方程．通过对不同的参数进行大量的数值仿真，结果表明，有限元方法能够仿真在接触碰撞期间的柔性杆纵向振动的弹性波，碰撞力时间响应的数值解与解析解吻合较好．
|
| 关 键 词： | 柔性多体系统 有限元分析 数值仿真 柔性杆 接触碰撞 |
| 文章编号： | 1006-2467(2003)12-1927-04 |
| 修稿时间： | 2002-11-27 |
Dynamic Analysis of Impact Loads in Flexible Multibody Systems by FEM |
| |
| DING Sui-liang,HONG Jia-zhen. Dynamic Analysis of Impact Loads in Flexible Multibody Systems by FEM[J]. Journal of Shanghai Jiaotong University, 2003, 37(12): 1927-1930 |
| |
| Authors: | DING Sui-liang HONG Jia-zhen |
| |
| Abstract: | This dissertation is about to solve contact-impact problems of flexible systems with the use of (finite) element analysis. It treated the longitudinal compressive impact of a flexible beam with a rigid body. The contact-impact model is analyzed, and the dynamics model is dispersed with the finite element analysis. The dynamics equation that governs the systems is acquired. The results prove that the technique is able to identify the elastic waves that travel along the flexible beam, and a force balance is continuously made to yield the contact stress. The numerical solution shows an excellent agreement between the numerically obtained contact force with the exact solution. Also, the relation between the exact solution and (numerical) solution of different modes was discussed. |
| |
| Keywords: | flexible multibody system finite element analysis numerical simulation flexible beams (contact)-impact |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
