Abstract During the cure process, the anisotropic characteristics of composite material, combined with high temperature and high pressure to which the material is subjected, cause the development of residual stresses. Consequently, laminate deformations arise and dimensional and geometrical requirements are not reached. Laminate deformations transfer into product distortions through assembly process. Distortions result in uncertainty in the performance of manufactured goods and they require effective management to ensure correct performance. The present work shows a numerical approach suitable to determine the geometrical deviations of an assembly constituted by thin laminates in composite material. The proposed model considers the geometrical deviations of the assembly parts, due to the manufacturing process, the assembly sequence and the presence of adhesive to put together the parts. The proposed model was experimentally verified by considering a T-shaped assembly constituted by flat and L-shaped components. The obtained results show a good agreement with the experimental ones.

中文翻译：

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CFRP 薄层压板组件的几何偏差分析：数值和实验结果

摘要 在固化过程中，复合材料的各向异性特性，加上材料所承受的高温高压，导致残余应力的产生。因此，会出现层压板变形并且未达到尺寸和几何要求。通过组装过程，层压板变形会转化为产品变形。失真导致制成品性能的不确定性，它们需要有效的管理以确保正确的性能。目前的工作显示了一种适用于确定由复合材料中的薄层压板构成的组件的几何偏差的数值方法。所提出的模型考虑了装配零件的几何偏差，由于制造过程，组装顺序和粘合剂的存在以将零件组装在一起。通过考虑由扁平和 L 形部件构成的 T 形组件，对所提出的模型进行了实验验证。所得结果与实验结果吻合良好。