中文摘要：

针对正交各向异性与各向同性外压薄壁圆筒临界失稳压力差异,对不同卷板方式下正交各向异性外压薄壁圆筒临界失稳压力开展研究,给出了各向同性外压薄壁圆筒临界失稳压力与不同卷板方式下正交各向异性外压薄壁圆筒临界失稳压力,当失稳波数变化时,正交各向异性外压与各向同性外压薄壁圆筒临界失稳压力比发生突变,不同卷板方式下正交各向异性外压薄壁圆筒临界失稳压力有限元结果大于各向同性外压薄壁圆筒临界失稳压力有限元或标准结果,正交各向异性临界失稳压力解析解不适合第二种卷板方式.

英文摘要：

Due to the difference between critical buckling pressure of orthotropic thin-walled cylindrical shell and isotropic one,the critical buckling pressure of orthotropic thin-walled cylindrical shell under external pressure with different plate rolling modes was investigated, given the critical bnckling pressure between the orthotropic thin-walled cylindrical shell and the isotropic one, and it is found that the ratio mutates when the buckliug wave number changes .The finite element method solution of orthotropic one under different plate railing modes are higher than finite element method solution or code solution of isotropic one. Analytical solution of critical buckling pressure for orthotropic thin-walled cylindrical shell is not fitJbr the solution under plate rolling mode Ⅱ