论文部分内容阅读
对激光辐照充压壳体破坏(失效)的结果进行评价时,对有关物理参量的不确定性进行定量分析是必要的。以充压壳体破坏(失效)的断裂机理为基础,讨论了如何建立壳体结构破坏(失效)的评价方法,问题的核心是建立壳体结构破坏(失效)的概率模型。该模型中,将影响结构破坏的各个物理参量划分为驱动力和抗力两种类型,通过计算驱动力和抗力的均值和标准差,可得到结构的破坏概率。在此基础上,给出了数值算例,得到了不同加载条件下模型壳体的破坏概率。
Quantitative analysis of the uncertainty of the relevant physical parameters is necessary when evaluating the results of the failure of the laser-irradiated pressurized shell. Based on the fracture mechanism of the crushing (failure) of the pressurized shell, how to establish the evaluation method of the failure (failure) of the shell structure is discussed. The core of the problem is to establish the probability model of the failure (failure) of the shell structure. In this model, each physical parameter affecting structural failure is divided into two types: driving force and resistance. By calculating the mean and standard deviation of driving force and resistance, the failure probability of the structure can be obtained. On this basis, a numerical example is given, and the failure probability of the model shell under different loading conditions is obtained.