钢丝绳碰撞动力学模型_方子帆.pdfVIP

第 26 卷第 10 期 Vol.26 No.10 工 程 力 学 2009 年 10 月 Oct. 2009 ENGINEERING MECHANICS 197 文章编号：1000-4750(2009)10-0197-06 钢丝绳碰撞动力学模型 *方子帆，吴建华，何孔德，张明松 (三峡大学机械与材料学院，湖北，宜昌 443002) 摘 要：以钢丝绳及其连接结构为对象，对其碰撞动力学模型进行研究。将钢丝绳离散为单元模型，利用相对坐 标关系建立其动力学模型，并将其连接结构以集中质量模型作为钢丝绳端部约束条件引入到钢丝绳动力学模型 中，建立钢丝绳及其连接结构的动力学模型。将钢丝绳的碰撞接触力引入到钢丝绳及其连接结构的动力学模型中， 建立这类结构的碰撞动力学模型。在 RecurDyn 环境中建立了具有横向和垂挂空间姿态的钢丝绳及其连接结构的 动力学仿真模型，并进行仿真研究。研究结果表明这些模型可以用作刚柔混合结构的动力学分析，同时能够实现 这类结构的可视化动态仿真。 关键词：钢丝绳；碰撞；动力学模型；相对坐标法；RecurDyn 中图分类号：O313; TH113.2 文献标识码：A THE IMPACT DYNAMIC MODEL OF STEEL CABLES * FANG Zi-fan , WU Jian-hua , HE Kong-de , ZHANG Ming-song (College of Mechanical and Material Engineering, China Three Gorges University, Yichang, Hubei 443002, China) Abstract: A dynamic model of steel cable is established by a discrete elements method considering relative coordinate relationship. Its connective structures are modeled as lumped mass and incorporated into the steel cable dynamic model as end constraints. Introducing the steel cables contact-impact force into the established dynamic model of steel cable with their connective structure, the impact dynamic model of steel cables with their connective structure is established finally. An example is presented, which is steel cables consisting of a transversely placed and a vertically placed steel cable with their connective structures. The impact dynamic simulation model is established in RecurDyn. The results show that the proposed impact dynamic model can be applied in the dynamic analysis of structural systems consisting flexible bodies and rigid bodies. Key words: steel cable; impact; dy