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整体化复合材料结构分阶段固化变形预报方法及其实验验证

, PP. 61-66

Keywords: 复合材料,整体化,分阶段,固化变形,有限元分析

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Abstract:

通过测试分析了T800/环氧预浸料固化过程中性能参数的变化规律;针对热压罐工艺条件下复合材料整体化结构分阶段成型的特点,提出了一种基于应力传递的分阶段固化变形的有限元模拟方法;对于不同成型工艺的工型加筋壁板结构,将分阶段模拟得出的变形结果与测试结果进行了对比,并分析了成型工艺与变形量之间的关系。结果表明,本文中提出的模拟方法能够准确预报整体化结构的固化变形,变形与成型工艺密切相关,针对特定的结构与铺层,采用合理的工艺过程能够有效减小构件的固化变形。

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