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首页> 外文期刊>The International Journal of Advanced Manufacturing Technology >Prediction of shear fracture in multi-stage deep drawing process including ironing process for Al3003 sheet
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Prediction of shear fracture in multi-stage deep drawing process including ironing process for Al3003 sheet

机译：多阶段深拉工艺剪切断裂预测，包括Al3003板胶水熨烫工艺

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摘要

To predict fracture caused by both tensile and shearing stresses, we applied the GISSMO (generalized incremental stress state-dependent model) in conjunction with the TFD (triaxiality failure diagram) in the finite element (FE) software LS-DYNA. Required damage parameters were determined by fitting to the load-displacement curves from tensile tests necessary to set up the TFD those obtained by corresponding FE analyses. Curve fitting was performed using the optimum design tool LS-OPT. For validation, the obtained GISSMO damage parameters were applied to the problem of rectangular cup forming for Al3003 material. Good agreement between the numerically obtained fracture locus and that observed in real forming shows that accurate shear fracture prediction is possible with the presented GISSMO-based approach.
机译：为了预测由拉伸和剪切应力引起的裂缝，我们将GiSSMO（广义增量应力状态依赖性模型）与有限元（FE）软件LS-DYNA中的TFD（三轴故障图）相结合施加。 通过拟合到从相应的Fe分析获得的TFD所需的拉伸试验来拟合到负载 - 位移曲线来确定所需的损伤参数。 使用最佳设计工具LS-opt进行曲线配件。 为了验证，将获得的GISSMO损伤参数应用于AL3003材料的矩形杯状物的问题。 在数值上获得的骨折基因座之间的良好一致性和在实际形成中观察到的良好的一致性表明，通过所呈现的基于GISSMO的方法可以进行准确的剪切断裂预测。

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