正交异性光弹性应力分离的边界元法

A Boundary Element Method for Separation of Stresses in Photo-orthotropic-elasticity

本文对平面正交各向异性复合材料模型引入正应力线性和及边界上正应力线性和流的概念,提出从应力相容方程出发.用边界元法计算正交异性光弹性模型内任一点的正应力线性和位的方法,再与正交异性光弹性法中所给出的应力同的关系结合,即可进行正交异性光弹性应力的分离.最后,对边界元方法的精度进行了讨论.

Two concepts-the linear sum of normal stresses and its flux at the model boundary are introduced for two-dimensional orthotropic composite models. A boundary element method is suggested to compute the values of the linear sum of normal stresses in the interior of photo-orthotropic models, whereas the photo-orthotropic-elasticity gives the shear stress and an another relation between the two normal stresses. So stresses can be separated. The accuracy of this boundary element approach is discussed.