利用数值方法研究了正交各向异性材料结构的塑性极限分析问题。
The aim is to calculate the plastic limit loads of structures made of orthotropic materials.
讨论了两种情形：一是各向同性材料的，一是正交各向异性材料的。
Two cases are discussed: one is for isotropic material and the other for orthotropic material.
用高精度三角形板单元有限元程序研究多种正交各向异性材料开圆孔或开方扎夹支方板的自由振动。
The free vibration of orthotropic clamped square plates with a circular or square hole is studied with the help of the program using the high-precision triangular plate bending element.
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