Abstract

Aerospace power supply and distribution products must predict the shock response based on the shock boundary conditions to determine the mechanical design safety factor. In this paper, the SRS of a typical product is used as an input condition, and a damped-sine discrete wave is used to synthesize an equivalent discrete time-domain sequence for simulation calculation. In order to improve the calculation efficiency, a low-sampling frequency time-domain sequence optimization algorithm based on continuous second derivative is proposed; through calculation comparison and verification, the algorithm can effectively improve the simulation operation efficiency, and the response prediction accuracy can meet the allowable requirements, which provides a new idea for products’ SRS calculation.

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