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...
摘要: 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...
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 modeling fracture using phase fields. Most of these studies have used an...
! 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...
As an emerging fracture method, phase field method (PFM) [27] provides attractive numerical solutions via diffuse phase boundary to describe the actual sharp boundary. By introducing the order parameters, the discontinuous fracture was described by the continuous function. The order parameter evolution...
Thermodynamically consistent phasefield models of fracture 热力学相容phasefield骨折模型 文档格式: .pdf 文档大小: 927.85K 文档页数: 39页 顶/踩数: 0/0 收藏人数: 0 评论次数: 0 文档热度: 文档分类: 论文--毕业论文 文档标签: OFofphase 系统标签: ...
phase-field modelingFerroelectric materials, known for their inherent brittleness, are prone to brittle fracture. This limitation not only curtails the ... C Qi,Y Jiang,X Wang - IOP Publishing Ltd 被引量: 0发表: 2024年 Phase Field Modeling of Coupling Evolution of Polarization, Fracture and ...
Phase-Field Modeling The phase-field method is a powerful simulation tool to describe xxx the complex evolution of interfaces in a wide range of contexts without explicitly tracking these interfaces. Its main application to date has been to problems in mater... A Karma - 《Handbook of Materials...
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
Phase-field modeling of brittle fracture with multi-level hp-FEM and the finite cell method The 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 ... S Nagaraja,M Elhaddad,M Ambati,... -...