SIMULATION OF DYNAMIC FRACTURE ALONG SOLDER-PAD INTERFACES USING A COHESIVE ZONE MODEL

摘要

In this paper, dynamic fracture of a single solder joint specimen is numerically simulated using the finite element method. The solder-IMC and IMC-Cu pad interfaces are modeled as cohesive zones. The simulated results show that under pure tensile loading, damage typically starts at the edge of the solder-IMC interface, then moves to IMC-Cu pad interface. Eventual failure is typically a brittle interfacial failure of the IMC-Cu interface.