| 大范围运动柔性梁的连续力法撞击动力学分析 |
| |
| 引用本文： | 方建士,李宝玉,章定国.大范围运动柔性梁的连续力法撞击动力学分析[J].南京理工大学学报(自然科学版),2008,32(6). |
| |
| 作者姓名： | 方建士 李宝玉 章定国 |
| |
| 作者单位： | 1. 南京工程学院,材料工程学院,江苏,南京,211167;南京理工大学,理学院,江苏,南京,210094
2. 南京理工大学,理学院,江苏,南京,210094 |
| |
| 基金项目： | 国家自然科学基金
，
江苏省自然科学基金
，
南京理工大学青年学者基金
，
南京工程学院科研基金
|
| |
| 摘 要： | 该文研究了柔性梁作大范围旋转运动时的撞击动力学问题.采用子系统法建立了考虑"动力刚化"效应的系统刚柔耦合动力学方程,并采用假设模态法描述变形,将偏微分形式的动力学方程转化为常微分方程.采用Hertz接触理论和非线性阻尼理论建立接触-碰撞模型,导出柔性梁含碰撞的动力学方程.文中给出了算例,验证了该文方法,并对大范围旋转运动下的柔性梁的动力学进行了探讨.
|
| 关 键 词： | 柔性梁 子系统法 假设模态 接触-碰撞 连续力法 |
Continuous Force Approach for Impact Dynamics of Flexible Beam in Large Overall Motion |
| |
| FANG Jian-shi,LI Bao-yu,ZHANG Ding-guo.Continuous Force Approach for Impact Dynamics of Flexible Beam in Large Overall Motion[J].Journal of Nanjing University of Science and Technology(Nature Science),2008,32(6). |
| |
| Authors: | FANG Jian-shi LI Bao-yu ZHANG Ding-guo |
| |
| Institution: | 1.School of Materials Engineering;Nanjing Institute of Technology;Nanjing 211167;China;2.School of Sciences;NUST;Nanjing 210094;China |
| |
| Abstract: | The impact dynamics of a flexible beam in large overall motion is reported.A set of dynamic equations with the dynamic stiffening effects is established by utilizing the subsystem method.The approach of assumed modes is used to describe the deformation of the beam,and subsequently the partial differential dynamic equations are changed to the form of ordinary differential equations.To obtain dynamic equations with impact,the Hertzian contact theory and nonlinear damping theory are adopted to calculate the im... |
| |
| Keywords: | flexible beams subsystem methods assumed modes contact-impact continuous force approach |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
