For fiber‐reinforced plastics, the strain‐rate dependent response is governed by the matrix behavior. In this work, the Goldberg model is considered for the epoxy matrix constitutive material model. Moreover, the strain‐rate dependency is achieved by direct influence on the elastic modulus, the inelastic strain, and the material strain to failure. In addition, an anisotropic damage response is implemented and extended through a strain‐rate dependent definition. Since the constitutive model relies on nonphysical parameters, a parameter study is further performed. Additional numerical investigations using a micro‐mechanical model are performed. Tension and shear loading conditions are evaluated and the influence of different strain rates is explored. Furthermore, the implemented anisotropic damage model is compared and discussed against an isotropic damage model.

中文翻译：

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使用各向异性损伤模型预测环氧树脂的损伤发展

对于纤维增强塑料，应变率相关的响应受基体行为支配。在这项工作中，对于环氧基体本构模型，考虑了Goldberg模型。此外，应变率依赖性是通过直接影响弹性模量，非弹性应变和材料破坏应变来实现的。此外，通过应变率相关的定义可以实现并扩展各向异性损伤响应。由于本构模型依赖于非物理参数，因此需要进一步进行参数研究。使用微机械模型进行了其他数值研究。评估了拉伸和剪切载荷条件，并探讨了不同应变率的影响。此外，