基于无网格仿真技术的特种车体结构分析

Structural Analysis of Special Car Body Based on Meshless Simulation Technology

为了提高CAE结构仿真计算的效率,缩短产品的设计研发周期。文中探索研究了无网格结构分析技术在复杂结构CAE仿真分析中的应用。以典型特种装备车体结构为对比,采用无网格技术仿真计算了车体结构的模态、静态及动态强度特性,计算结果与有限元方法之间的相对误差分别只有4.8%、2.5%和1.9%,无论是模态振型还是应力分布状态,无网格方法和有限元方法之间均具有很好的一致性。同时,相比于有限元方法,无网格方法的仿真计算效率提高了79.4%。为工程设计人员在产品设计过程中同步高效地开展结构的CAE仿真分析工作提供了有效的分析手段。

In order to improve the efficiency of CAE structural simulation calculation,shorten the product design and development cycle,this paper explores the application of meshless structure analysis technology in CAE simulation analysis of complex structures.The model,static and dynamic strength characteristics of the typical special equipment car body structure are simulated using the meshless technology.The relative errors between the calculated results and the finite element method are only 4.8%,2.5%and 1.9%respectively.Compared with the finite element method,the simulation efficiency of the meshless method is improved by 79.4%.It provides an effective means for engineering designers to carry out CAE simulation analysis of structure synchronously and efficiently in the process of product design.