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针对弹射座椅联锁装置中关键零件因失效而导致弹射救生失败的问题,在联锁装置主要机构运动分析的基础上,将有限元法引入到锁臂结构的模型分析中,对其进行变形仿真分析,得到锁臂模型在加载后的合位移云图和等效应力云图,明确了变形量过大可能是锁臂失效的原因之一。为此,提出了锁臂结构设计的新方案,通过仿真分析并与之前锁臂的分析进行比较,发现锁臂端部的应变明显变小,验证了新方案的可靠性,为联锁装置的深入研究进行了必要的探索,对提高弹射座椅的安全性能具有积极的意义。
Aiming at the failure of the ejection of the life-saving of the key components in the ejector seat interlock due to failure, the finite element method is introduced into the model analysis of the lock arm structure based on the movement analysis of the main mechanism of the interlock device, After simulation, the combined displacement cloud image and equivalent stress cloud image of the lock-arm model are obtained. It is clear that the excessive deformation may be one of the reasons for the lock-arm failure. Therefore, a new scheme of the design of the lock arm is proposed. Through the simulation analysis and comparison with the previous analysis of the lock arm, it is found that the strain at the end of the lock arm is obviously smaller, which verifies the reliability of the new scheme. In-depth study carried out the necessary exploration, to improve the safety of ejection seat has a positive meaning.