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基于经典层合板理论,并考虑面内波纹引起的拉伸-弯曲耦合作用,提出了含面内波纹缺陷的复合材料层合板刚度预测模型,定量研究了波纹比、纤维偏转角、波纹位置等面内波纹参数对其三维刚度性能影响。结果表明:理论模型预测值与文献中的结果吻合较好;面内波纹对纵向弹性模量、横向弹性模量、面内剪切模量、主泊松比、面内弯曲刚度均产生了显著影响。该建模方法为研究波纹缺陷对复合材料力学性能影响提供了参考。
Based on the classical theory of laminated plates and the tension-bending coupling caused by in-plane corrugations, the stiffness prediction model of composite laminates with in-plane corrugation defects is put forward. The corrugation ratio, fiber deflection angle, Effect of Internal Corrugated Parameters on Its Three Dimensional Stiffness. The results show that the predictions of the theoretical model are in good agreement with those in the literature. The in-plane corrugations have significant effects on the longitudinal elastic modulus, transverse elastic modulus, in-plane shear modulus, principal Poisson’s ratio and in-plane bending stiffness influences. The modeling method provides a reference for studying the influence of corrugated defects on the mechanical properties of composites.