Biaxial experiments and numerical analyses on damage prediction in metal forming processes
Biaxial experiments and numerical analyses on damage prediction in metal forming processes
复制标题
金属成形过程损伤预测的双轴实验和数值分析
DOI：
10.1051/matecconf/20168003001
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M. Schmidt
中科院分区：
文献类型：
--
作者：
M. Brünig;S. Gerke;M. Schmidt
本文讨论了韧性金属各向异性连续损伤破坏模型。唯象方法基于损伤张量的运动学定义，考虑了应力状态对损伤条件和损伤应变演化规律的影响。基于实验研究和数值模拟的这些标准的不同分支被认为对应于各种微观损伤和断裂机制，取决于应力强度，应力三轴度和矿脉参数。双轴加载试样的实验和相应的数值模拟已经进行表明，它们涵盖了广泛的应力状态，在拉伸，剪切和压缩制度。采用数字图像相关技术分析了试件关键区域的当前应变状态。详细讨论了金属塑性成形过程中出现的剪压复合加载条件下的损伤行为。
The paper discusses an anisotropic continuum damage and failure model for ductile metals. The phenomenological approach is based on kinematic definition of damage tensors and takes into account the effect of stress state on damage conditions and damage strain evolution laws. Different branches of these criteria based on experimental studies and numerical simulations are considered corresponding to various microscopic damage and fracture mechanisms depending on stress intensity, stress triaxiality and the Lode parameter. Experiments with biaxially loaded specimens and corresponding numerical simulations have been performed showing that they cover a wide range of stress states in combined tension, shear and compression regimes. Digital image correlation technique has been used to analyze current strain states in critical regions of the specimens. Damage behavior for shear-compression loading conditions appearing in metal forming processes is discussed in detail.
影响因子：
9.8
作者：
Bruenig, Michael;Gerke, Steffen;Hagenbrock, Vanessa
通讯作者：
Hagenbrock, Vanessa
影响因子：
9.8
作者：
Bruenig, Michael;Gerke, Steffen;Hagenbrock, Vanessa
通讯作者：
Hagenbrock, Vanessa