基于多失效模式的弹上舱段结构件贮存寿命验证方法  

Missile Cabin Storage Life Verification and Assessment MethodBased on Multiple Failure Modes

作　　者：董军超 王凤金[2] 朱重阳 DONG Jun-chao;WANG Feng-jin;ZHU Chong-yang(Beijing Institute of Structure and Environment Engineering,Beijing 100076,China;Beijing Institute of Space Launch Technology,Beijing 100076,China)

机构地区：[1]北京强度环境研究所,北京100076 [2]北京航天发射技术研究所,北京100076

出　　处：《装备环境工程》2022年第10期80-85,共6页Equipment Environmental Engineering

摘　　要：目的 验证多失效模式下弹上舱段结构件的贮存寿命。方法 通过开展贮存条件下失效模式分析,确定复合材料贮存薄弱环节,依此制定高温摸底试验方案。开展高温极限应力试验,确定不改变复合材料失效机理的高温贮存极限应力,并据此开展加速因子试验,基于阿伦尼兹模型,计算不同失效模式的激活能,并以激活能最小的性能参数作为贮存薄弱环节,计算舱段结构件加速因子,设计舱段结构件加速贮存寿命验证试验,评估其贮存寿命。结果 计算了某防热材料各失效模式下的激活能,确定了其性能参数的薄弱环节,根据薄弱环节的激活能计算了舱段结构件加速因子和加速贮存试验时间,验证了其贮存寿命。结论 通过确定防热材料的贮存薄弱环节,开展了加速贮存试验,验证了舱段贮存寿命。The paper intends to verify the storage life of missile cabin based on multiple failure modes. Through the failure mode analysis under storage conditions, the paper determines the weak links of composite materials and formulates the high-temperature test scheme. Carry out high temperature ultimate stress test to determine the high temperature storage ultimate stress that does not change the failure mechanism of composite materials, and conduct the acceleration factor test accordingly.Calculate the activation energy of different failure modes based on Arrhenius model, and take the performance parameter with the minimum activation energy as the storage weak link to calculate the cabin acceleration factor, design the cabin accelerated storage life verification test and evaluate the storage life of the cabin. The activation energy of thermal protection material under different failure modes is calculated and the weak links based on its performance parameters are identified. The cabin’s acceleration factor and acceleration storage test time are calculated and the storage life is verified. By identifying the storage weaknesses of thermal protection materials,an accelerated storage test is carried out to verify storage life of the cabin.

关 键 词：多失效模式 弹上舱段结构件 贮存寿命 验证与评估 防热材料 激活能 

分 类 号：TJ760[兵器科学与技术—武器系统与运用工程]