The concept of virtual material testing and its application to sheet metal forming simulations
The concept of virtual material testing and its application to sheet metal forming simulations
复制标题
虚拟材料测试的概念及其在板材成形模拟中的应用
DOI：
10.1088/1742-6596/734/3/032107
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
D. Helm
中科院分区：
文献类型：
--
作者：
A. Butz;J. Pagenkopf;M. Baiker;D. Helm
采用基于晶体塑性的全场微观组织模拟方法，虚拟地确定金属板材的力学性能。微观结构特征，如特定的晶粒形态和晶体学织构被考虑到预测塑性各向异性。一个特别的重点是在确定的Lankford系数和平面应力条件下的屈服面。与实验过程相比，虚拟材料测试允许在屈服面上生成更多的数据点。这些数据用于校准各向异性弹塑性材料模型，这些模型通常用于金属板成形模拟。通过数值计算，分析了屈服面上选取点对标定过程的影响。
A crystal plasticity based full-field microstructure simulation approach is used to virtually determine mechanical properties of sheet metals. Microstructural features like the specific grain morphology and the crystallographic texture are taken into account to predict the plastic anisotropy. A special focus is on the determination of the Lankford coefficients and on the yield surface under plane stress conditions. Compared to experimental procedures, virtual material testing allows to generate significantly more data points on the yield surface. This data is used to calibrate anisotropic elasto-plastic material models which are commonly used for sheet metal forming simulations. A numerical study is carried out to analyze the influence of the chosen points on the yield surface on the calibration procedure.
利用晶体塑性和数值均化方案测定多晶的机械性能
影响因子：
2.2
作者：
M. Baiker;D. Helm;A. Butz
通讯作者：
A. Butz