In this paper, interlaminar stresses in a symmetrical laminated composite plate with a circular hole under uniform heat flux were examined. The analytical solution was achieved based on the boundary-layer theory by Lekhnitskii’s solution. The stress relations related out-of-plane stress components were obtained by variational principle states, the minimum principle of complementary energy, zero-order equilibrium relations and boundary conditions for each layer. The unknown factors in the stress relations were obtained by the equilibrium equation in integral form. This solution prepared a calculation method via adaptability for examining the 3D thermal stresses in perforated laminated with curved boundaries. The results were obtained for \([45/-45]\)s, [0/90]s, \([30/-30]\)s lay-ups made of graphite/epoxy and glass/epoxy materials.

本文研究了均匀热流下圆形孔对称层压复合板的层间应力。解析解是基于边界层理论通过 Lekhnitskii 的解得到的。通过变分原理状态、互补能量最小原理、零级平衡关系和各层边界条件得到与面外应力分量相关的应力关系。应力关系中的未知因素通过积分形式的平衡方程得到。该解决方案通过适应性准备了一种计算方法，用于检查具有弯曲边界的穿孔层压板中的 3D 热应力。结果是针对\([45/-45]\) s, [0/90]s, \([30/-30]\)s 由石墨/环氧树脂和玻璃/环氧树脂材料制成的叠层。