• 论文 •    

异构系统动态双向融合仿真技术研究

赵振,张树有   

  1. 浙江大学 机械与能源工程学院,浙江 杭州 310027
  • 出版日期:2008-10-15 发布日期:2008-10-25

Simulation technology of dynamic-bidirectional-inosculation in heterogeneous systems

ZHAO Zhen,ZHANG Shu-you   

  1. College of Mechanical & Energy Engineering, Zhejinag University,Hangzhou 310027,China
  • Online:2008-10-15 Published:2008-10-25

摘要: 异构的计算机辅助工程软件ANSYS与ADAMS通过模型转化或联合仿真等方法,能协同求解刚弹(柔)耦合等特定问题,但难以准确求解电、热、磁场中的多体动力学仿真问题。根据牛顿插值法基本思想,提出了异构仿真环境动态双向融合法,将连续的仿真过程离散为n个步长足够小的子过程,通过构建数据交互平台,分别独立传递存储模型信息与仿真数据,动态更新边界条件,使得两个异构系统双向融合,实现完整问题的分步求解。该方法克服了传统方法误差大、直观性差等缺点,解决了ADAMS与ANSYS不能双向融合仿真的问题。实例表明,该方法应用效果好,为求解异构环境仿真的融合提供了一种有效途径。

关键词: 异构系统, 动态双向融合, 计算机仿真, 计算机辅助工程, 虚拟样机

Abstract: Through the methods of model-transformation and joint-simulation, the heterogeneous Computer Aided Engineering (CAE) software ANSYS and ADAMS could collaboratively solve problems as the rigid-flexible coupling. But it couldnt precisely solve the problem, which was multi-body dynamics simulation in electric, thermal and magnetic fields. According to basic ideas of Newton interpolation, a method called Dynamic-Bidirectional-Inosculation(DBI)was proposed. The continuous simulation process was divided into n parts of child-processes whose steps were short enough, By constructing a data exchange platform, information from storage model and simulation data were transmitted respectively and dynamically update bound conditions so as to reach bidirectional inosculation in heterogeneous systems, thereby realize complete problem solving by steps. This proposed method has overcome shortcomings as bigger error and low visualization of traditional method. It solved bidirectional inosculation simulation problem between ANSYS and ADAMS. Results showed that this method had better application effects and provided an effective path for solving inosculation problems in heterogeneous simulations.

Key words: heterogeneous system, dynamic-bidirectional-inosculation, computer simulation, computer aided engineering, virtual prototype

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