ANSYS的APDL分网技术在多芯片组件中的应用

ANSYS APDL Point Nets Technology in Multichip Module of Application

工程中进行有限元分析时,网格划分的好坏直接影响着计算结果的精度和计算时间,本文以MCM(多芯片组件)为对象,采用四种分网技术,建立APDL参数化有限元模型,并进行了热仿真分析。研究表明,自由分网技术得到的网格存在过多的尖角,分析结果误差最大;混合分网技术所得精度有所提高;详细分网技术,虽然结果精度很高,但计算时间很长,浪费计算资源;选择性分网技术得到的网格,精度完全满足要求,且数目少,计算时间短,是一种较为理想的分网技术。

In engineering in finite element analysis, the meshing quality directly affect the calculation precision and calculation time. MCM （Muhiehip module）is used as the research object in this paper, the four point nets technology to build APDL parametric finite element model, and a hot simulation analysis. Research shows that, the grid of free point nets technology has too much sharp edges, the error of analysis is the largest. The mixed points nets technology improve the precision. The results precision of detailed points nets technology is high, but computing time is very long, which waste the computing resources. The grid of selective point nets technology meet the precision with less computing time, so this way is a more ideal points nets technology.