CAJ | 학술논문

微粒碰撞噪声检测（ PIND）是航天继电器出厂前必做的多余物检测试验，冲击试验条件强度越大，多余物微粒越容易被激活，但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。针对实验研究法和理论推导法在研究极限冲击试验条件时可操作性不强的问题，本文提出了航天继电器PIND极限冲击条件仿真研究方法。以某型号航天继电器为例，利用Patran/Nastran软件建立被试器件的有限元模型，仿真分析各组件在外加冲击激励下的响应。根据仿真结果研究被试器件响应的变化规律和PIND极限冲击试验条件，并通过实验证明了该方法的有效性。
미립팽당조성검측（ PIND）시항천계전기출엄전필주적다여물검측시험，충격시험조건강도월대，다여물미립월용역피격활，단과대적충격강도회사계전기내부조건발생피로손상화소성변형。침대실험연구법화이론추도법재연구겁한충격시험조건시가조작성불강적문제，본문제출료항천계전기PIND겁한충격조건방진연구방법。이모형호항천계전기위례，이용Patran/Nastran연건건립피시기건적유한원모형，방진분석각조건재외가충격격려하적향응。근거방진결과연구피시기건향응적변화규률화PIND겁한충격시험조건，병통과실험증명료해방법적유효성。
Particle Impact Noise Detection ( PIND) is one of the most important methods in detecting remain-ders within space relays .Remainder particles are activated more easily with greater intensity of impact conditions . But excessive intensity of impact will lead to fatigue damage and plastic deformation of the internal components of relays.In this paper, a simulation analysis is taken to research the ultimate impact conditions on PIND of space re-lay, considering the theoretical derivation methods and experimental research methods are not convenient to oper -ate .A certain type of aerospace relay is taken as an example , and finite element model of device is established with Patran/Nastran software to explore the response of each component of the device under external impact conditions . According to the simulation results , the regulation of change of responds and the ultimate impact conditions on PIND are obtained , and the effectiveness of the method is demonstrated by the experimental results .