论文部分内容阅读
在异常高温火烧环境下,机械热弱结构能够起到预期安全保护功能。定义强链于强链失效为设计无效,系统不安全;定义弱链先于强链失效为设计有效,系统具有安全性。含弱链设计系统之所以会存在安全失效概率,是因为弱/强链环节的失效温度有一定的分散性。我们在此采用概率论方法,对不去确定性进行处理,并适用随机模拟方法和积分法来对其进行计算,以获取系统的安全失效概率。通过计算,显示出随机模拟方法与积分法的安全评估结果相同。
In the abnormal high temperature fire environment, the mechanical weak structure can play the expected safety protection function. The definition of a strong chain in the chain of failure is ineffective design, the system is not safe; the definition of a weak chain before the chain is effective for the design, the system is safe. The reason why the weak link design system has the probability of safety failure is that the failure temperature of the weak / strong link has a certain degree of dispersion. Here we use the probability theory method to deal with the uncertainty, and apply stochastic simulation method and integral method to calculate it to get the probability of system safety failure. Through the calculation, it shows that the stochastic simulation method is the same as the safety assessment of integral method.