[1]葛建立,杨国来,王兆旭,等.移动刚体-悬臂梁耦合系统建模仿真及实验研究[J].南京理工大学学报(自然科学版),2012,36(05):830.
 GE Jian-li,YANG Guo-lai,WANG Zhao-xu,et al.Modeling Simulation and Experiment of Cantilever Beams Activatedby Moving Rigid Body[J].Journal of Nanjing University of Science and Technology,2012,36(05):830.
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移动刚体-悬臂梁耦合系统建模仿真及实验研究
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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:
36卷
期数:
2012年05期
页码:
830
栏目:
出版日期:
2012-10-31

文章信息/Info

Title:
Modeling Simulation and Experiment of Cantilever Beams Activatedby Moving Rigid Body
作者:
葛建立1杨国来1王兆旭2郝建伟1邓伟1
1. 南京理工大学机械工程学院,江苏南京210094;2. 西北机电工程研究所,陕西咸阳712099
Author(s):
GE Jian-li1YANG Guo-lai1WANG Zhao-xu2HAO Jian-wei1DENG Wei1
1. School of Mechanical Engineering,NUST,Nanjing 210094,China;2. Northwest Institute of Mechanical and Electrical Engineering,Xianyang 712099,China
关键词:
接触/ 碰撞模型时间不协调伽辽金有限元法移动载荷配合间隙
Keywords:
contact-impact modeltime-discontinuous Galerkin finite element methodmoving loadsfitting clearances
分类号:
O327
摘要:
该文建立了小跨度刚体-悬臂梁移动接触/ 碰撞模型,考虑了移动刚体与弹性悬臂梁表面前后接触点的配合间隙和结构参数的时变效应。采用幂函数插值时间不协调有限元法计算了等截面悬臂梁自由端挠度和速度随时间的变化规律,并与移动力模型、移动质量模型和ABAQUS 软件中的计算结果进行了对比分析。讨论了配合间隙对梁动态特性的影响。设计了滑块-悬臂梁测试系统。由计算与测试结果的对比可知,该文模型结果与测试结果一致,且能够反映测试结果中的低频振动。
Abstract:
A contact-impact model of the cantilever beam activated by a small-span rigid bodymoving on the surface is established. The fit clearances of front and back contact points between themoving rigid body and the elastic beam surface and the time-dependent effect of structure parametersare considered. Dynamic deflections and velocities for the free end of the uniform cross-sectioncantilever beam are computed using the time-discontinuous Galerkin( TDG) finite element methodwith power function interpolation,and the results are compared with those of the moving force model,the moving mass model and the ABAQUS software. The influence of fitting clearances on dynamiccharacteristics of the beam is discussed. An experimental system of the cantilever beam activated bythe moving mass is designed, and the free end deflection of the beam is tested. The numericalsolutions of the contact-impact model by TDG method agree well with experiments and can interpretthe low frequency vibration on test curves.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2012-03-07修回日期:2012-05-07基金项目:国家973 计划资助项目(61311603);南京理工大学科技发展基金(XKF09065)作者简介:葛建立(1980-),男,博士,讲师,主要研究方向:计算固体力学,E-mail:gejianli007@ yahoo. com. cn。
更新日期/Last Update: 2012-11-26