An elastic‐plastic constitutive model to describe the nonlinear compressive stress‐strain behavior of fiber reinforced polymer composites was developed under the plane stress condition. Model predictions are based on the tensile properties and a tensile/compressive asymmetry coefficient. A variety of tensile and compressive tests were carried out on 0°, 15°, 45°, and 90° unidirectional and ±30° and ±45° angle‐ply thermosetting and thermoplastic polymer composite laminates to obtain the material parameters and validate the model, while the finite element implementation and applications to three‐point bending loading are discussed in the next investigation.

中文翻译：

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纤维增强聚合物复合材料非线性压缩行为的本构模型

在平面应力条件下，建立了描述纤维增强聚合物复合材料非线性压缩应力-应变行为的弹塑性本构模型。模型预测基于拉伸特性和拉伸/压缩不对称系数。在0°，15°，45°和90°单向以及±30°和±45°角热固性和热塑性聚合物复合层压板上进行了各种拉伸和压缩测试，以获得材料参数并验证模型，而在下一个研究中将讨论有限元的实现及其在三点弯曲载荷中的应用。