Crack path prediction in rolled aluminum plates with fracture toughness orthotropy and experimental validation
Crack path prediction in rolled aluminum plates with fracture toughness orthotropy and experimental validation
复制标题
断裂韧性各向异性轧制铝板裂纹路径预测及实验验证
DOI：
10.1016/j.engfracmech.2015.03.003
复制
发表时间：
2015
影响因子：
5.4
通讯作者：
Günter Linek
中科院分区：
文献类型：
--
作者：
P. Judt;A. Ricoeur;Günter Linek
本文提出了一种精确计算平面结构裂纹路径的数值方法。J积分用于确定裂纹尖端载荷量，如应力强度因子或能量释放率。裂纹路径预测应用一个修改的最大能量释放率的方法占断裂韧性正交各向异性的铝合金Al-7075-T651轧制板的弹性常数的各向异性是可以忽略的。CT试样的实验进行了确定断裂韧性和垂直于轧制方向。不同形状试件的裂纹路径的数值预测与实验结果吻合较好。
The paper presents a numerical procedure for the accurate calculation of crack paths in plane structures. TheJ-integral is used to determine crack tip loading quantities such as stress intensity factors or the energy release rate. Crack paths are predicted applying a modified maximum energy release rate approach accounting for the fracture toughness orthotropy in rolled plates of aluminum alloy Al-7075-T651 where the anisotropy of elastic constants is negligible. Experiments with CT-specimens are carried out to determine the fracture toughnesses in and perpendicular to the rolling direction. The numerically predicted crack paths for differently shaped specimens are in good agreement with those obtained from experiments.
影响因子：
2.5
作者：
M. Steigemann;B. Schramm
通讯作者：
M. Steigemann;B. Schramm