Shell-based simplified electronic package model development and its application for reliability analysis

In this paper, the procedures for generating beam-shell-based simplified PWB assembly models using both the ANSYS parametric APDL format and ABAQUS input data files have been developed. The simulation results from the beam-shell-based simplified PWB assembly model were compared with its corresponding 3D detailed solid PWB assembly model under various loading conditions including thermo-mechanical load, mechanical (bending) load and drop load. The results show that the beam-shell-based simplified PWB assembly model gives a fairly good estimation in a time effective manner, over 90% time saving for the cases studied for both thermo-mechanical and mechanical (bending) loading conditions and over 80% for impact loading conditions. The uniqueness for the proposed framework is that when the beam-shell-based simplified PWB assembly model methodology is combined with the shell-to-solid submodeling technique, it can provide not only a time effective simulation procedure but also more accurate results, both in PWB assembly and phone level simulation.