Numerical investigation of blanking for metal polymer sandwich sheets
Numerical investigation of blanking for metal polymer sandwich sheets
复制标题
金属聚合物夹层板冲裁的数值研究
DOI：
10.1051/matecconf/20168016002
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
A. Erman
中科院分区：
文献类型：
--
作者：
Gutknecht;Florian;Übelacker;Clausmeyer;Tekkaya;A. Erman
金属聚合物夹层板材由机械性能截然不同的材料组成。由于这一事实以及冲裁过程中切削区的高局部梯度，传统的工艺策略和经验知识很难应用。剪切切割过程的有限元模拟被用来预测所需的力和切削面的几何形状。采用完全耦合的延性损伤模型来描述材料的行为。该模型考虑了剪切和压缩为主的应力状态对损伤萌生的影响。拉伸和压缩试验数据用于材料参数的识别。并将冲裁模拟结果与实验数据进行了比较。此外，还分析了应力状态的演化，以获得对潜在物理的理解。最后，该模型能够预测岩心压缩和其他量，如作用应力和相应的三轴性，这为分析模型的发展提供了有价值的信息。
Metal polymer sandwich sheets consist of materials with drastically different mechanical properties. Due to this fact and because of high local gradients in the cutting zone during the blanking process, traditional process strategies and empirical knowledge are difficult to apply. A finite-element simulation of the shear cutting process is used to predict the necessary force and the geometry of the cutting surface. A fully-coupled ductile damage model is used for the description of the material behaviour. This model considers the influence of shear and compression-dominated stress states on the initiation of damage. Experimental tensile and compression test data is used for the identification of material parameters. The results of the blanking simulation are compared with experimental data. Furthermore, the evolution of the stress state is analysed to gain understanding of the underlying physics. Finally this model enables the prediction of core compression and other quantities such as the acting stresses and corresponding triaxilities, which provide valuable information for the development of analytical models.
影响因子：
6.2
作者：
M. Liewald;C. Bolay;S. Thullner
通讯作者：
M. Liewald;C. Bolay;S. Thullner
DOI：
--
发表时间：
2015
期刊：
影响因子：
--
作者：
P. Stein;David Übelacker;Dirk Holke;P. Groche
通讯作者：
P. Groche