Vibration Reliability Test Assessment of Electrical Connector Contacts

doi:10.3901/JME.2021.10.257

Abstract

Abstract: On the issue of rapid assessment for contact reliability of electrical connector contacts under vibration, vibration model is set up which include thinking of two situations, the installation of contact in electrical connector interior and the connection of jack and pin. Sinusoidal and random vibration simulation are carried out through ABAQUS, the relative displacement between jack and pin and the change rule of the root stress of the jack reed are obtained. Then the degradation model of contact resistance based on Wiener process under random vibration stress is established. Considering the randomness of drift system and diffusion coefficient is established based on the principle of constant acceleration factor. The test statistical analysis method of step-stress accelerated degradation based on the above model is given. The test scheme of step-stress accelerated degradation of contacts under vibration is formulated and corresponding tests are carried out. Verified the failure mechanism by the research on insertion and extraction force and the micro analysis of contact surface, the correctness of the model is verified by the statistical analysis of the test data, and the relationship between the contact life and the vibration magnitude is given, which realizes the rapid contact reliability assessment of the electrical connector in the vibration environment.

Key words: vibration stress, electrical connector contacts, Wiener process, step-stress, accelerated degradation model

CLC Number:

TG156

PAN Jun, ZHANG Wen, ZHANG Libin, HE Qingchuan, QIAN Ping, CHEN Wenhua. Vibration Reliability Test Assessment of Electrical Connector Contacts[J]. Journal of Mechanical Engineering, 2021, 57(10): 257-266.

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