Abstract:The vibration reliability of critical components of a nonlinear packaging system excited by random vibration with specified spectrum characteristic was studied.The multi-order Kanai-Tajimi PSD model was adopted to present the multi modal property of the real random vibration.The real random vibration was discretized and presented in standard normal random space.The package was modeled as a two-degree-of-freedom base excited nonlinear system.The model correction factor method was used to find the equivalent linear system for the nonlinear packaging system.The first order reliability method was used to obtain the fist passage failure probability.The effects of parameters variations on the critical component failure probability were also explored.The method and results presented are valuable for package vibration reliability analysis and package design optimization.
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