复合材料结构材料参数转换及在有限元分析中的应用

多层的纤维缠绕复合材料结构中，各个单层间具有不同的纤维铺设角，呈现各向异性的材料特性，在进行有限元分析时，必须对材料的材料特性进行处理变换。根据基本力学方程，对不同缠绕方向的纤维层材料，把不同材料坐标系下的特性参数等效变换到统一坐标系。并利用ANSYS软件对层合结构进行有限元分析，结果表明此转换是可行的。

Composite material properties transformation & application in FEA

In multi - layered composite material structure, every layer has different winding angles and present anisotropic material characteristics. In finite element analysis, we must transform material properties equivalently. This paper based on basic mechanical equation, transform material constants from local coordinate to global coordinate system. Using ANSYS, we calculate a multi - layered structure with uniform pressure, the result indicate this transformation is correct and feasible.