Temperature-dependent anisotropic material modeling of the sheet metal component within the polymer injection forming process
Temperature-dependent anisotropic material modeling of the sheet metal component within the polymer injection forming process
复制标题
聚合物注射成型过程中金属板部件的温度相关各向异性材料建模
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
T. Götze
中科院分区：
文献类型：
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作者：
B. Behrens;T. Götze
在这项工作的过程中，一个扩展的材料模型的碳钢板金属已被开发的基础上希尔'48屈服准则，考虑温度相关的塑性各向异性系数。该材料模型应用于聚合物注射成形工艺，其中金属板通过与塑料熔体接触加热到临界成形温度。在此温度范围内出现蓝脆。板材的弹性性能、屈服应力以及塑性各向异性系数与室温下的材料相比变得显著不同。应该强调的是，特别是温度相关的各向异性系数尚未考虑在最常见的材料模型。借助于所提出的建模方法，可以实现对温度依赖性碳钢材料行为的更精确的建模。
In the course of this work, an extended material model for a carbon steel sheet metal has been developed based on Hill’48 yield criterion, considering temperature-dependent plastic anisotropy coefficients. This material model is applied on a polymer injection forming process in which the sheet metal heats up to a critical forming temperature through the contact with the plastic melt. At this temperature range blue brittleness occurs. The elastic properties, the yield stress as well as the plastic anisotropy coefficients of the sheet material become significantly different compared to those at room temperature. It should be emphasized that especially temperature-dependent anisotropy coefficients are not yet considered in most common material models. With the help of the presented modelling approach a more precise modelling of the temperature-dependent carbon steel material behavior can be realised.