Abstract:Reed contact switch is widely used in the naval ships' electrical equipment. When subjected to explosive impact, the reed contact switch tends to open or the reeds produce plastic deformation, which affects the reliability of the equipment and endangers the safety of the ship. To check the shock resistance of the reed contact switch, contact modes of the closed switch are analyzed firstly, and then the response under several typical impact loads is calculated with Bathe composite method. Finally, whether the reed contact switch occurs open circuit is determined by extraction of the contact force between the dynamic contactor and the static contactor, while whether the reeds are plastically deformed under impact loading is observed. The study shows that the contact force between contactors volatiles during impact loading while it shows a clear periodicity in the free vibration with the vibration frequency approaching the first-order natural frequency; In the case of the same amplitude, high frequency impact loads are more likely to cause violent contact chatter and broken circuit, while low frequency impact loads make the larger stress and plastic deformation of the root of reeds. Influence of negative wave delay to shock response is discussed, and measures to improve the reed contact switch to shock resistance is proposed.
闫明1, 2,刘栋1, 2,张磊2,温肇东2. 舰艇电气设备中簧片式触点开关冲击响应分析[J]. 振动与冲击, 2016, 35(1): 183-187.
YAN Ming 1,2 Liu Dong1, 2 ZHANG Lei 2 WEN Zhaodong 2. Shock Response Analysis of the Reed Contact Switch in Naval Ships' Electrical Equipment. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(1): 183-187.
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