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本文研究了轴压和热载联合作用下复合材料层板和加筋板的稳定性问题。按照逐次修改的拉格朗日列式法建立了层板结构的非线性有限元方程,应用增量法和牛顿法混合求解。计算结果表明:材料性能随温度变化对单向层板、正交层板和某些角交层板的承载能力有较大的影响。
In this paper, the stability of composite laminates and stiffened plates under the combined action of axial compression and thermal loading is studied. The nonlinear finite element equations of the slab structure were established according to Lagrange method with successive modifications. The incremental and Newton methods were used to solve the nonlinear finite element equations. The calculation results show that the change of material properties with temperature has a great influence on the bearing capacity of unidirectional lamina, orthogonal laminae and some corner laminae.