动力学仿真中的子系统建模技术研究

Subsystem modeling technology in dynamics simulation

针对目前复杂机械系统动力学仿真软件建模效率偏低、模型无法重用、用户起点高等缺点,对复杂机械系统动力学仿真中的子系统建模技术进行了研究。提出了多级子系统的坐标切换方法,设计了子系统模型的接口方案,并提出了子系统的装配算法和面向子系统装配的参数化求解算法。在算法研究的基础上,开发了子系统建模组件和汽车子模型库,并集成于动力学仿真分析平台InteDyna。通过与某汽车企业合作,将InteDyna应用于多款车型的整车动力学仿真分析和实车试验,验证了子系统建模技术的有效性与可靠性。

In view of the shortcomings of the dynamics simulation software for complex mechanical system in terms of low efficiency, incapability of reuse and high threshold for fresh users, comprehensive investigation on subsystem modeling technology of complex mechanical system was performed. A coordinate switch method of multilevel subsystem was put forward, an interface scheme of subsystem model was introduced, and the assembly arithmetic of subsystem and its parameterized arithmetic based on subsystem, assembly were developed. Subsystem modeling components and submodel store of automobile were sequentially integrated with dynamical simulation platform-InteDyna. By cooperating with some automobile corporation, the efficiency and reliability of subsystem modeling technology was verified by applying InteDyna to the whole automobile dynamics simulation analysis and test validation of various types of automobiles.