CAJ | 학술논문

对航天飞行器上的高压常闭式电爆阀启动过程的动态响应特性进行仿真，并通过试验验证两者基本吻合。在此基础上，对电爆阀启动过程活塞撞击变形情况进行分析。采用Abaqus软件对活塞与壳体碰撞行为进行显式非线性动态分析，研究了电爆管、材料性能以及电爆阀出口压力条件对活塞撞击变形量的影响。结果表明，电爆阀出口压力条件对活塞与壳体撞击变形量影响最大，出口压力增大对应变形量急剧减小，电爆阀工作的可靠性随之降低。
대항천비행기상적고압상폐식전폭벌계동과정적동태향응특성진행방진，병통과시험험증량자기본문합。재차기출상，대전폭벌계동과정활새당격변형정황진행분석。채용Abaqus연건대활새여각체팽당행위진행현식비선성동태분석，연구료전폭관、재료성능이급전폭벌출구압력조건대활새당격변형량적영향。결과표명，전폭벌출구압력조건대활새여각체당격변형량영향최대，출구압력증대대응변형량급극감소，전폭벌공작적가고성수지강저。
The dynamic response characteristics of high pressure normally-closed pyro-valve on space vehicles were simulated. The results were verified properly by test. Based on simulation results, the piston impact deformation was analyzed. The explicit nonlinear dynamic analysis for the behaviour of piston impacting on the valve body was carried out with Abaqus sol, care. The influence of the initiator, material characteristis and valve outlet pressure conditions on piston impact deformation was investigated. The results indicate that the valve outlet pressure condition is a key factor that inf- luences the valve performance and makes the impact deformation aggravated; and with outlet pressure increasing, the piston impact deformation decreases rapidly and the ovro-valve reliability is degraded.