Theoretical and implementation details of an orthotropic plasticity model are presented. The model is comprised of three sub-models dealing with elastic and inelastic deformations, damage, and failure. The input to the three sub-models involves tabulated data that can be obtained from laboratory and/or virtual testing. In this article, the focus is on the development of the failure sub-model and its links to the other components. Details of how the user-selected failure criterion is used, and what steps are implemented post-failure are presented. The well-known Puck failure criterion is used in the numerical examples. Three validation tests are used to illustrate the strengths and weaknesses of the failure sub-model—10°, 15°, and 30° off-axis tests, a stacked-ply test carried out at room temperature under quasi-static loading, and finally, a high-speed impact test. Results indicate that while the deformation and damage sub-models give reasonably accurate results, the failure predictions are a huge challenge especially for high-speed impact tests.

中文翻译：

---

在正交各向异性塑性材料模型中实现变形、损坏和失效

介绍了正交各向异性塑性模型的理论和实现细节。该模型由处理弹性和非弹性变形、损坏和失效的三个子模型组成。三个子模型的输入涉及可以从实验室和/或虚拟测试中获得的表格数据。在本文中，重点是故障子模型的开发及其与其他组件的链接。介绍了如何使用用户选择的故障标准以及故障后实施哪些步骤的详细信息。在数值示例中使用了众所周知的 Puck 失效准则。三个验证测试用于说明失效子模型的优缺点——10°、15°和30°离轴测试，在准静态加载下在室温下进行的堆叠层测试，最后, 高速冲击试验。结果表明，虽然变形和损伤子模型给出了相当准确的结果，但失效预测是一个巨大的挑战，尤其是对于高速冲击试验。