汽车有限元建模及其电磁兼容预测的多软件联合仿真  

Finite element modeling and multi-software co-simulation in automobile EMC prediction

作　　者：汪泉弟[1] 梁凌红[1] 安宗裕[1] 彭河蒙[1] 刘青松[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《重庆大学学报（自然科学版）》2013年第2期7-11,36,共6页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(50877081)

摘　　要：针对一般仿真软件建立大型复杂模型的局限性,提出了多软件联合仿真技术。该技术利用前处理软件Hypermesh高质量的导入汽车CAD模型并进行三角形网格剖分;采用Matlab编程从Hypermesh输出的网格数据文件中提取各部件单元的节点坐标数据,再以文本文件的形式输出,以便Hfss读取;在Matlab编写形成有限元网格模型的VBS程序,然后在Hfss中运行该程序读取单元节点坐标、形成整车的初始三角剖分网格。以点火系统电源线上的共模电流为干扰源,仿真分析了在该干扰源作用下车内外的电场分布情况。研究方法具有较强的通用性,对汽车整车级电磁兼容仿真建模具有很好的参考价值。For general software in the limitation of large and complex structures＇ modeling, this article proposes a multi-software co-simulation technology. Hypermesh is a pre-processing software which can high-quality import and triangular CAD-models, taking advantage of this, the CAD-model of the ear is meshed in Hypermesh. Using Matlab, the node coordinates data of each component＇ s elements are extracted from the grid data file outputted by Hypermesh, and are exported in the form of text file for Hfss to read. VBS program is used to build the finite element model, which is written in Matlab, then runs in Hfss to read the node coordinates data and form the initial triangular-mesh model of the Automobile. Considering only the interference of the ignition system power line＇s common-mode current we simulated and analyzed the electric field distribution inside and outside of the automobile. This modeling method has a strong commonality ,and is a good reference for automobile EMC simulation modeling.

关 键 词：整车建模 软件联合仿真 EMC预测 电磁辐射 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]