Computationally Efficient F ractureAnalysis of Electronic Pack ages through Decomposition

摘要

In the present paper we describe and demonstirte a computationally efficient, technique for analyzing fr acture mechanics pr oblems in mixed linear - nonline ar systems. The te chnique combines the metho dologyof Rybicki and Kanninen for calculation of the energy release rate in fracture processes with a de comp osition based analysis pr ocedurecently proposed by Subb arayan and c o-workers.The methodology will enable quick design desicions during the package developmental stages without significant loss of ac curacy. The develop d procedure is demonstrated on a hyp othetical 5x5 array package It is shown that on this representative package nearly 30% time savings (or a 150 % speedup) can be acheived in estimating the energy release rate at an accuracy loss of only 6.2%. Prior research has shown that the analysis time is nearly indep endent of p ackage size, indic ating unb ounddspeed-ups for lar ger package sizes.