大型刚柔耦合车辆动力学系统仿真研究  

Large-scale rigid-flexible-coupling vehicle dynamical system simulation

作　　者：朴明伟[1] 丁彦闯[1] 李繁[1] 兆文忠[1] 

机构地区：[1]大连交通大学机械工程学院,辽宁大连116028

出　　处：《计算机集成制造系统》2008年第5期875-881,924,共8页Computer Integrated Manufacturing Systems

基　　金：国家863计划资助项目(2006AA04Z160)~~

摘　　要：为缩减柔性体集成规模,满足约束作用精度要求,提出了一种体现柔性体约束运动特征的接口处理技术对策及其相应预载方法。特征约束模态体现了柔性体接口界面的主要静态变形特征,必须全部保留。为此,根据柔性体受力分析将复杂约束划分为主要约束和辅助约束。以最少的约束模态数目实现主要约束,利用弹性约束内力逼近辅助约束。按照具体的约束变形情况,在子结构模态求解之前,合理确定固有模态的截取。由于柔性体预载变形,刚柔耦合系统只能以部件或构件刚性耦合方式进行预载分析。D35钳夹车刚柔耦合仿真表明,上述技术对策的应用不仅得到了与动应力试验相吻合的内力分析结果,而且验证了其柔性体摩擦约束的稳定性。To reduce the integration size of flexible bodies and satisfy the precision requirements of their interaction constraints, an interface-transaction technical strategy and corresponding preloa＆analysis methodology were pro posed, in which the motion characteristics of flexible-bodies constraints were manifested. Since Characteristic Con straint Modals （CC Modal） represented the main characteristics of complex static-deformation of flexible-bodies in terraces, all of them must be retained. Therefore, according to their interaction analysis, the complicated constraints of flexible bodies were classified as the main constraints and subsidiary constraints. The main constraints were implemented by the least constraint modals, and the subsidiary constraints were approximately established by inner force constraints. Based on the specific deformation constraints, the rational truncation of normal modals was de fined before the Component Mode Synthesis （CMS） modals were solved. Since the pre-deformation of flexible bodies, the preload analysis of rigid flexible hybrid system could be done only in the stiffening coupling-form of subassemblies or parts. Rigid-flexible coupling simulations of D35 Schnabel wagon showed that by the application of the above technical strategy, not only the inner-force analysis results complied with dynamical stress measures, but also the stability of flexible bodies friction constraints was validated.

关 键 词：刚柔耦合系统 钳夹车 动态仿真 子结构模态综合 

分 类 号：U270[机械工程—车辆工程] U272.6[交通运输工程—载运工具运用工程]