Design method of triaxial vibration fixture for complex integrated circuits

In view of the harsh conditions of vibration test of complex integrated circuits in aerospace and the complex characteristics of chip packaging, the vibration fixture optimization design method based on topology optimization and multi-objective genetic algorithm is adopted to optimize the fixture structure design for a complex integrated circuit in PGA273 for aerospace. The sweep frequency vibration and random vibration response of the fixture structure are simulated and analyzed. Finally, the validity and rationality of the fixture design was proved by experiments, which effectively solve the problems of test resonance, poor dynamic response and excessive fixture mass.