[1]方建士,李宝玉,章定国,等.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,(06):661-665.
 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,2008,(06):661-665.
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大范围运动柔性梁的连续力法撞击动力学分析
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2008年06期
页码:
661-665
栏目:
出版日期:
2008-12-30

文章信息/Info

Title:
Continuous Force Approach for Impact Dynamics of Flexible Beam in Large Overall Motion
作者:
方建士;李宝玉;章定国;
1. 南京工程学院材料工程学院, 江苏南京211167; 2. 南京理工大学理学院, 江苏南京210094
Author(s):
FANG Jian-shi12LI Bao-yu2ZHANG Ding-guo2
1.School of Materials Engineering,Nanjing Institute of Technology,Nanjing 211167,China;2.School of Sciences,NUST,Nanjing 210094,China
关键词:
柔性梁 子系统法 假设模态 接触-碰撞 连续力法
Keywords:
flexible beams subsystem methods assumed modes contact-impact continuous force approach
分类号:
O313.7
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。
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 impact force.To validate the method presented here,the dynamic simulation of the hub-beam system involving impact with a horizontal rigid plane is given as an example.

参考文献/References:

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[9] 华卫江, 章定国. 柔性机器人系统碰撞动力学建模 [ J]. 机械工程学报, 2007, 43( 12): 222- 228.
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[11] 方建士. 多体系统的刚柔耦合动力学及其在发射系 统中的应用[ D]. 南京: 南京理工大学理学院, 2006.

备注/Memo

备注/Memo:
基金项目: 国家自然科学基金( 10772085); 江苏省自然科学基金( BK2007205); 南京理工大学青年学者基金 ( NJUST200504) ; 南京工程学院科研基金( KXJ08102) 作者简介: 方建士( 1982- ), 男, 浙江温州人, 助教, 主要研究方向: 多体系统动力学和控制, E_mail: fangjsh@ n jit. edu. cn; 通讯作者: 章定国( 1967- ), 男, 浙江嘉善人, 教授, 博士生导师, 主要研究方向: 多体系统动力 学和控制, E_mail: zhangdg419@mai.l njust. edu. cn。
更新日期/Last Update: 2008-12-30