大变形曲梁多体系统动力学建模

蒋依宁; 刘锦阳

大变形曲梁多体系统动力学建模

1.
上海交通大学船舶海洋与建筑工程学院, 上海 200240

基金项目:

国家自然科学基金项目(10872126)

博士点基金项目(20100073110007)资助

详细信息

作者简介:
蒋依宁(1987-),硕士研究生,研究方向为多体系统动力学,jiangyining@sjtu.edu.cn;刘锦阳,教授,博士,liujy@sjtu.edu.cn

蒋依宁(1987-),硕士研究生,研究方向为多体系统动力学,jiangyining@sjtu.edu.cn;刘锦阳,教授,博士,liujy@sjtu.edu.cn

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出版历程
- 收稿日期: 2011-11-21

Dynamic Modeling for Curved Multibody Beam System with Large Deformation

1.
School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240

摘要

摘要: 为了提高大变形曲梁多体系统数值仿真的计算精度和计算效率,引入弧线坐标,采用曲梁单元,从非线性应变关系式出发,用绝对节点坐标法建立了大变形曲梁多体系统的动力学模型,该方法的特点是不需要引入单元转换矩阵,收敛性好。用曲梁单元模型对曲梁单摆进行数值仿真计算,将计算结果与将曲梁细化为若干个直梁单元的动力学模型的计算结果进行对比,验证了曲梁单元动力学模型的准确性和有效性。在此基础上用曲梁单元模型实现了四连杆曲梁多体系统的动力学仿真。
- 大变形 /
- 曲梁单元 /
- 多体系统
Abstract: In this paper,curved beam element model was proposed in order to improve the computational accuracyand efficiency of a curved beam multibody system with large deformation. By using arc coordinate and curved beamelements,dynamic model of curved beam multibody system was established based on absolute coordinate formula-tion,which takes into account geometric nonlinear effect. The advantage of the model is that the transformation ma-trices are not needed. Furthermore,the convergence of the curved beam element model is better than that of theconventional straight beam model. Simulation of a single curved beam pendulum was carried out to show the accura-cy and efficiency of the curved beam element model by comparison with the simulation results obtained from thestraight beam element model. Finally,the curved beam element model was used to simulate a four-bar mechanismwith large deformation.
- large deformation /
- curved beam element /
- multibody system

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参考文献(6)

[1]	Berzeri M,Shabana A A. Development of simple models for theelastic forces in the absolute nodal coordinate formulation[J].Journal of Sound and Vibration,2000,235(4):539～565
[2]	Omar M Z,Shabana A A. A two-dimensional shear deformablebeam for large rotation and deformation problems[J]. Journal ofSound and Vibration,2001,243(3):565～576
[3]	Yakoub R R,Shabana A A. Three dimensional absolute nodal co-ordinate formulation for beam elements: implementation and appli-cations[J]. ASME Journal of Mechanical Design,2001,123(4):614～621
[4]	Yoo W S,Lee J H,et al. Large deflection analysis of a thin plate:Computer simulations and experiments[J]. Multibody SystemDynamics,2004,11(2):185～208
[5]	Mikkola A M,Matikainen M K. Development of elastic forces for alarge deformation plate element based on the absolute nodal coordi-nate formulation[J]. Journal of Computational and NonlinearDynamics,2006,1(2):103～108
[6]	Shabana A A,Mikkola A M. Use of the finite element absolutenodal coordinate formulation in modeling slope discontinuity[J].Transactions of the ASME,Journal of Mechanical Design,2003,125(2):342～350