针对空间结构中常见的复合材料层合壳体结构发展了一种多层相对自由度层合壳元.这种实体型壳元既可以用较粗的网格很好地模拟层合壳,又易与三维实体单元相连接,使变厚度、带有补强的复合材料层合壳体等复杂结构得以正确建模.同时运用旋转周期有限元技术对大规模的空间复合材料层合结构成功实施了屈曲分析.数值算例验证了本文计算策略的有效性.
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