Energetically motivated crack orientation vector for phase-field fracture with a directional split
Energetically motivated crack orientation vector for phase-field fracture with a directional split
复制标题
具有定向分裂的相场断裂的能量驱动裂纹方向矢量
DOI:
10.1007/s10704-022-00633-3
复制
发表时间:
--
影响因子:
2.5
通讯作者:
Kaliske
中科院分区:
文献类型:
--
作者:
Steinke;Kaliske
The realistic approximation of structural behavior in a post fracture state by the phase-field method requires information about the spatial orientation of the crack surface at the material point level. For the directional phase-field split, this orientation is specified by the crack orientation vector, that is defined perpendicular to the crack surface. An alternative approach to the determination of the orientation based on standard fracture mechanical arguments, i.e. in alignment with the direction of the largest principle tensile strain or stress, is investigated by considering the amount of dissipated strain energy density during crack evolution. In contrast to the application of gradient methods, the analytical approach enables the determination of all local maxima of strain energy density dissipation and, in consequence, the identification of the global maximum, that is assumed to govern the orientation of an evolving crack. Furthermore, the evaluation of the local maxima provides a novel aspect in the discussion of the phenomenon of crack branching. As the directional split differentiates into crack driving contributions of tension and shear stresses on the crack surface, a consistent relation to Mode I and Mode II fracture is available and a mode dependent fracture toughness can be considered. Consequently, the realistic simulation of rock-like fracture is demonstrated. In addition, a numerical investigation of-convergence for an AT-2 type crack surface density is presented in a two-dimensional setup. For the directional split, also the issues internal locking as well as lateral phase-field evolution are addressed.
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DOI:
10.1137/0913035
发表时间:
1992-03-01
期刊:
SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING
影响因子:
--
作者:
VANDERVORST, HA
通讯作者:
VANDERVORST, HA
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
M. Hofacker;C. Miehé
通讯作者:
C. Miehé
影响因子:
5.3
作者:
Erwan Tanné;Tianyi Li;B. Bourdin;J. Marigo;C. Maurini
通讯作者:
Erwan Tanné;Tianyi Li;B. Bourdin;J. Marigo;C. Maurini
DOI:
--
发表时间:
2021
期刊:
Pamm
影响因子:
--
作者:
J. Storm;M. Kaliske
通讯作者:
M. Kaliske
影响因子:
2.5
作者:
C. Steinke;Kaan Özenç;Gor Chinaryan;M. Kaliske
通讯作者:
C. Steinke;Kaan Özenç;Gor Chinaryan;M. Kaliske