摘要
随着人们对随机变量认识的深入和计算能力的提高,已形成了用于处理随机变量的结构可靠度设计与分析的方法与标准。针对固体火箭发动机药柱材料性能、载荷环境、几何尺寸等参数不确定性的影响,提出一种结合蒙特卡罗与响应面法计算随机载荷下固体发动机药柱可靠性的方法。通过建立固体发动机推进剂药柱的极限状态方程,采用响应平面法和蒙特卡洛模拟随机载荷和固体推进剂药柱初始强度来获取推进剂药柱的可靠度。该方法能有效地计算贮存、飞行等环境条件下固体推进剂药柱的结构可靠性。
Following with recognization of the variant randomness in engineering design and improvment of the computing power, reliability design has formed uniform standard in many region. In consideration of the probabilistie of solid rocket motor grain material property, load environment, physical dimension, a method combined Monte-Carlo simulation and Response Surface Method has been developed, with which the reliability of solid propellant grain under random loading can be obtained by establishing the limit state equation, and presenting the random loading and initial strength of solid propellant grain with simulation method. It can effectively calculate the structural reliability of solid propellant under the circumstances of storage and flight.
出处
《战术导弹技术》
2012年第3期25-28,102,共5页
Tactical Missile Technology
关键词
结构可靠性
蒙特卡罗
响应面法
固体发动机药柱
strctural reliability
Monte-Carlo
response surface method
solid motor grain
