Abstract The influence of the hygrothermal effect is considered in the constitutive relation of carbon fiber reinforced composite (CFRP) based Reddy’s high-order shear deformation theory. The geometric nonlinear governing equations are derived by using virtual displacement method; and the boundary conditions are elastic restraint against rotation. Then, the physical parameters of CFRP are considered as constant in the hygrothermal effect, and the governing equations are solved by using Galerkin method, where clamped rectangular CFRP laminate is used. Finally, the effects of the different hygrothermal effect, length height ratio, length width ratio and total number of plies are discussed on the load-central deflection and bending moment.

中文翻译：

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CFRP 层压板在湿热效应中承受均匀载荷的几何非线性分析

摘要 基于Reddy 高阶剪切变形理论的碳纤维增强复合材料(CFRP) 本构关系考虑了湿热效应的影响。采用虚拟位移法推导出几何非线性控制方程；边界条件为弹性约束旋转。然后，在湿热效应中将CFRP的物理参数视为常数，并使用Galerkin方法求解控制方程，其中使用夹紧的矩形CFRP层压板。最后讨论了不同的湿热效应、长高比、长宽比和总层数对荷载中心挠度和弯矩的影响。