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首页> 外文会议>Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments >Failure Modeling in an Orthotropic Plasticity Material Model
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Failure Modeling in an Orthotropic Plasticity Material Model

机译：正交各向异性塑性材料模型中的失效建模

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摘要

Failure modeling of composites is an ongoing challenge. In the current work, an orthotropic plasticity-based material model has been implemented into LS-DYNA as *MAT_COMPOSITE_TABULATED_PLASTICITY_DAMAGE or *MAT_213. The material model is driven by tabulated input data which can be generated either from experiments or virtual testing and is made up of three submodels that deal with deformation, damage, and failure. The focus of the current work is the implementation, verification, and validation of a modified version of an already existing failure submodel, with a brief introduction to the deformation and the damage sub-model. The suite of validation tests involves a unidirectional composite and includes a stacked-ply model loaded at a slow rate as well a high-velocity impact of a flat panel. Preliminary results are encouraging and show the versatility of the developed material model.
机译：复合材料的失效建模是一个持续的挑战。在目前的工作中，基于正交各向异性塑性的材料模型已作为*MAT_复合材料表列塑性损伤或*MAT_213实现到LS-DYNA中。材料模型由表格输入数据驱动，表格输入数据可以从实验或虚拟测试中生成，并由处理变形、损伤和失效的三个子模型组成。当前工作的重点是实施、验证和验证现有失效子模型的修改版本，并简要介绍变形和损伤子模型。这套验证测试涉及单向复合材料，包括以低速加载的叠层模型以及平板的高速冲击。初步结果令人鼓舞，并显示了所开发材料模型的多功能性。

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