FracturePhase fieldFinite element methodPhase field method has proven capable of producing complex crack patterns in solids. It introduces a continuous phase field to regularize the sharp crack discontinuities. However, the applicability of this method to engineering problems is hindered by its ...
在脆性和准脆性固体中断裂的相场建模中,表征材料的非对称拉伸/压缩行为至关重要。现有的相场模型通常采用自由能密度的直观划分而不正确地捕捉裂纹边界条件,或者采用在失去变分一致性的情况下的特设混合公式。为了解决这个问题,本工作在脆性断裂和准脆性破坏的统一相场理论框架内提出了一个可变一致的相场各向异性损伤模型Wu...
! User element subroutine for the phase field model for fracture ! Quasi-Newton, suitable for fatigue and static fracture ! The code is distributed under a BSD license ! If using this code for research or industrial purposes, please cite: ! P.K. Kristensen and E. Martínez-Pañeda. Phas...
A phase-field model for brittle fracture is implemented in the commercial finite element software Abaqus by means of UEL and UMAT subroutines. The phase-field method considerably reduces the implementation complexity for fracture problems as it removes the need for numerical tracking of disco...
phasefieldfracturemodels热力学consistent骨折 INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING Int. J. Numer. Meth. Engng 2010; 83:1273–1311 Published online 22 March 2010 in Wiley InterScience (.interscience.wiley). DOI: 10.1002/nme.2861 Thermodynamically consistent phase-field models of ...
Finite cell methodMulti-levelhp-FEMAdaptive refinementThe difficulties in dealing with discontinuities related to a sharp crack are overcome in the phase-field approach for fracture by modeling the crack as a diffusive object being described by a continuous field having high gradients. The discrete ...
This paper presents a family of phase-field models for the coupled simulation of the microstructure formation and evolution, and the nucleation and propagation of cracks in single and polycrystalline ferroelectric materials. The first objective is to introduce a phase-field model for ferroelectric single...
相场断裂(PFF)建模是一种流行的建模和模拟固体断裂过程的方法。精确的材料参数和边界条件对于确保数值模拟的良好预测质量至关重要。在这项工作中,提出了一种集成数字图像相关(IDIC)算法,通过使用相场模型本身和变形样品的图像,一次性校准边界条件、泊松比、断裂能和内部长度。所提出的方法被应用于模拟单边切口剪切试验的...
Computational modeling of the initiation and propagation of complex fracture is central to the discipline of engineering fracture mechanics. This review focuses on two promising approaches: phase-field (PF) and peridynamic (PD) models applied to this class of problems. The basic concepts consisting of...
This paper addresses the modeling of fracture in quasi-brittle materials using a phase-field approach to the description of crack topology. Within the computational mechanics community, several studies have treated the issue of