基于有限元仿真软件的二极管优化设计  

Optimization design of diode based on finite element simulation software

作　　者：朱金荣[1] 唐开远[1] 尹志威[1] 赵成[1] 

机构地区：[1]扬州大学物理科学与技术学院,江苏扬州225002

出　　处：《扬州大学学报（自然科学版）》2013年第2期49-51,56,共4页Journal of Yangzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目(10705023)

摘　　要：为了研究二极管的失效机制,利用有限元仿真软件建立二维有限元模型,对二极管进行热应力分析,并对其引脚尺寸进行优化设计.结果表明:二极管的应力分布不均匀主要集中在芯片位置,导致芯片较易损坏;引脚尺寸是影响二极管应力的一个因素,改变引脚尺寸可以在很大程度上减小二极管的残余应力.基于有限元仿真软件的设计可为优化二极管应力提供一种快速、科学的方法.In order to study the failure mechanism of diodes, a two-dimensional thermal stress anatysis model Of diode is established and simulated by finite element simulation software. Subsequently, an optimization design for optimizing pin size of diode is conducted. The results show that the stress of diode is distributed unreasonably, mainly concentrated at the centre of diode, so this area is prone to damage. Besides, the pin size is a factor which influences the stress of diodes. Altering pin size can decrease the residual stress of diodes to a large extent. Optimization design based on finite element analysis software provides a quick and scientific method for optimizing the residual stress of diodes.

关 键 词：二极管 有限元模型 热应力分析 优化设计 

分 类 号：TN313.4[电子电信—物理电子学]