激光辐照下充压圆筒变形的相似律问题

以充压圆筒在强激光辐照下的变形与破坏响应为研究目标，首先利用相似分析方法，主要采用了方程分析法和量纲分析法，确定了相似准则。然后利用ANSYS有限元程序，模拟了三组几何和物理相似的大小模型。通过对计算结果的分析表明，满足相似准则的大小模型，在相应的时间和空间，相对的物理参量是一致的。

Similarity criterion about deformation and failure of pressurized cylinder subjected to laser irradiation

In this paper, the deformation and failure of a cylinder with inner pressure, which is irradiated by high power continuous wave laser beam, are investigated using the similarity analysis theory and FEM. At first, several dimensionless parameters are presented as the similarity criterion based on the dimensional analysis and equations analysis methods. In order to verify the above criterion, numerical simulations on mechanical responses of different size cylinder, but with the same similarity parameters, are accomplished with the commercial FEM code ANSYS. FEM results demonstrate that main dimensionless physical parameters are invariable at the same dimensionless position and time in different scale models, and prove that the similarity criterion presented in this paper is valid.