In this paper, a multiscale analysis strategy was proposed to analyze the failure behaviors of open-hole compressive (OHC) CFRP laminates. Micro-level intralaminar failure was defined in the constituents (fiber and matrix) with a modified micromechanics failure theory. In the multiscale stress transformation, the effect of thermal residual stress was considered using constant thermal amplification factor. Meanwhile, macro-level interlaminar failure was defined with cohesive elements. Based on the simulated and experimental results, the sub-laminate scaled OHC laminates of the stacking sequence [45/0/−45/90]_4s were studied at different temperatures. The established multiscale model showed good precision in the strength and failure mode predictions. Transverse throughout damage at the hole section led to the final failure. As the temperature increased, the damage process began at a lower load level and the strength of the laminates decreased significantly. Stiffness reductions and small load drops were more likely to occur before final failure. The differences in the delamination size among all interfaces tended to be smaller. Besides, matrix failure lagged under shear loading conditions if the thermal residual stress was neglected in the multiscale analysis.

本文提出了一种多尺度分析策略来分析裸眼压缩（OHC）CFRP层压板的破坏行为。使用改进的微力学破坏理论，在组分（纤维和基体）中定义了微观层内破坏。在多尺度应力转换中，使用恒定的热放大系数来考虑热残余应力的影响。同时，宏观层面的层间破坏被定义为具有内聚性的要素。根据模拟和实验结果，层叠顺序为[45/0 / -45 / 90] _4s的次层压氧化皮OHC层压板在不同温度下进行了研究。建立的多尺度模型在强度和破坏模式预测中显示出良好的精度。孔段的横向损坏导致最终失败。随着温度升高，破坏过程开始于较低的载荷水平，层压板的强度显着降低。在最终故障之前，更可能发生刚度降低和较小的载荷下降。所有界面之间的分层大小差异趋于变小。此外，如果在多尺度分析中忽略了残余热应力，则在剪切载荷条件下基体破坏会滞后。