Simulation Study on High Temperature Vibration Failure of Electrical Connector

doi:10.16628/j.cnki.2095-8188.2024.07.013

Abstract

Abstract:

The dynamic response of electrical connector in high temperature vibration environment is analyzed with Ansys software.The influence of the quality of the cable at the tail of the contact piece,temperature,separation force,stress relaxation,etc.on the micro motion amplitude is deeply analyzed.Based on the simulation,it is concluded that the original design will fail in high temperature vibration.The design of the contact positive pressure and the quality of the tail cable are optimized.Combined with the simulation analysis results and the relevant calculation,the design index range for the electrical connector to not fail under the specified high temperature vibration conditions is obtained,which means that the separation force should be as close as possible to the upper limit of 2.5 N,and the quality of the cable at the tail of each contact should be controlled within 1.2 g.The correctness of the simulation and optimization is verified by the test,which provides the design and optimization ideas for the high temperature vibration resistance of the electrical connector.

Key words: electrical connector, high temperature vibration, contact, simulation, failure, wear

CLC Number:

TM503.5

ZHU Ning, ZHAI Guofu. Simulation Study on High Temperature Vibration Failure of Electrical Connector[J]. LOW VOLTAGE APPARATUS, 2024, 0(7): 79-86.

Figures/Tables 14

References 20

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零件	材料	密度/(kg·m^-3)	弹性模量/GPa	泊松比
外壳	2A12	2 800	68.0	0.33
螺套	不锈钢	7 900	200.0	0.30
基座	LCP	1 610	17.6	0.41
撑簧圈	C17200	8 250	134.0	0.30
接触件	QSn4-3	8 800	121.6	0.30

插孔	分离力/N		减小比例/%
插孔	振动前	振动后	减小比例/%
插孔1	1.6	1.1	31.25
插孔2	2.1	1.6	23.81
插孔3	1.7	1.2	29.41
插孔4	1.9	1.2	36.84
插孔5	2.0	1.4	30.00
插孔6	1.8	1.2	33.33
插孔7	2.1	1.5	28.57
插孔8	1.7	1.1	35.29

编号	分离力/N	线缆质量/g	编号	分离力/N	线缆质量/g
1	1.2	0.2	9	2.1	0.5
2	1.5	0.2	10	2.5	0.5
3	1.8	0.2	11	1.2	1.0
4	2.1	0.2	12	1.5	1.0
5	2.5	0.2	13	1.8	1.0
6	1.2	0.5	14	2.1	1.0
7	1.5	0.5	15	2.5	1.0
8	1.8	0.5	—	—	—