中文摘要：

在针对微粒碰撞噪声检测（PIND）试验中,过大的冲击强度会使继电器内部组件发生疲劳损伤和塑性变形,降低器件可靠性。分析了过量冲击试验使密封继电器失效的机理,提出了极限冲击条件的力学判定方法。采用有限元软件Patran仿真分析内部各组件在不同冲击激励下的力学响应规律,研究了密封继电器PIND极限冲击条件。试验证明了所得极限冲击试验条件的有效性和实用性。

英文摘要：

Particle impact noise detection（PIND） is one of the indispensable methods in detecting remainders within sealed relays. But practice shows that the impact test method has shortcc,mings. Remainder particles are detected more easily with greater intensity of impact test conditions, but it will lead to fatigue damage and plastic deformation of the internal components with excessive intensity,which will reduce the device reliability. The failure mechanism of excessive impact test conditions was analyzed to research its mecharLics appraised method. A certain type of sealed space relay was taken as an example, through Patran software to study the mechanical response of its internal components under different impact excitation,then researching the ultimate impact test conditions of PIND according to the regulation. The experiments prove the validity and practicability of the ultimate impact test conditions.