Wciślik Wiktor, Lipiec Sebastian
Faculty of Civil Engineering and Architecture, Kielce University of Technology, 25-314 Kielce, Poland.
Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, 25-314 Kielce, Poland.
Materials (Basel). 2023 Jul 14;16(14):4998. doi: 10.3390/ma16144998.
The article is a continuation of two previous review papers on the fracture mechanism of structural metals through the nucleation, growth and coalescence of voids. In the present paper, the literature on the numerical modelling of void nucleation and development has been reviewed. The scope of the work does not include porous material models and their numerical implementation. As part of the discussion on void initiation, nucleation around second phase particles and nucleation as an effect of the discontinuity of the crystal structure were discussed separately. The basic void cell models, finite element method (FEM) models of periodically distributed particles/voids and models based on the results of the observations of the actual microstructure of materials have been characterised. Basic issues related to the application of the cohesive approach in void nucleation modelling have been considered. A separate issue is the characteristics of atomistic simulations and peridynamic modelling, which have been developed in recent years. Numerical approaches to modelling the growth and coalescence of voids are described, with particular emphasis on the influence of the stress state and strain localisation. Basic conclusions from the simulation are presented, pointing to the contribution of FEM modelling to the understanding of microstructural phenomena leading to ductile fracture.
本文是关于结构金属通过孔洞形核、生长和聚合的断裂机制的两篇先前综述论文的续篇。在本文中，对孔洞形核与发展的数值模拟文献进行了综述。工作范围不包括多孔材料模型及其数值实现。作为关于孔洞萌生讨论的一部分，分别讨论了第二相粒子周围的形核以及作为晶体结构不连续性效应的形核。对基本孔洞单元模型、周期性分布粒子/孔洞的有限元法（FEM）模型以及基于材料实际微观结构观测结果的模型进行了描述。考虑了与在孔洞形核建模中应用内聚方法相关的基本问题。一个单独的问题是近年来发展起来的原子模拟和近场动力学建模的特点。描述了孔洞生长和聚合建模的数值方法，特别强调了应力状态和应变局部化的影响。给出了模拟的基本结论，指出有限元法建模对理解导致韧性断裂的微观结构现象的贡献。
