非线性索单元等效多体动力学模型研究  

Research on Equivalent Multi-body Dynamics Model for Nonlinear Cable Elements

作　　者：杨志军[1] 冯文贤[1] 陈新[1] 

机构地区：[1]广东工业大学,广州510006

出　　处：《中国机械工程》2011年第3期262-265,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50905033);高等学校博士学科点专项科研基金资助项目(20094420120001);广东省科技计划资助项目(2009B010900032);广东省自然科学基金资助项目(8451009001001414);中山市产学研专项基金资助项目(2009CXY018);广州市科技计划资助项目(2006Z2-D9061)

摘　　要：根据预应力非线性索单元本构方程,推导了钢丝绳多刚体离散等效节点连接力,将索道离散成刚体小段,在刚体之间施加等效载荷,并引入了扭转刚度和阻尼来保证位移相容性。利用该模型编制了ADAMS程序代码,通过预紧力索道多体动力学进行仿真,揭示了钢丝绳振动频率与张力的关系,为索道多体动力学仿真提供了依据。Based on the non-linear constitutive equation of the pre-loaded cable elements,this paper presented an equivalent multi-body dynamics model.In the method,the whole cable was divided into short rigid bodies,and the equivalent reaction force between the elements was deduced and applied to the rigid bodies by means of General Force in ADAMS.The torsion stiffness and damping were introduced to ensure the displacement consistent.The presented method was implemented onto ADAMS,and a pre-loaded cable model was built,the vibration amplitude and frequency under different pre-load force were analyzed,the results show that the relationship between vibration amplitude and pre-load force is agree with the analytic results.The present method provides a theoretical basis for modeling of a preload cable system using ADAMS.

关 键 词：张紧索道 非线性索单元 多体动力学模型 位移相容性 

分 类 号：TU351[建筑科学—结构工程] O242.21[理学—计算数学]