Explicit dynamic fracture simulation of two-phase materials using a novel meso-structure modelling approach
Explicit dynamic fracture simulation of two-phase materials using a novel meso-structure modelling approach
复制标题
使用新型细观结构建模方法对两相材料进行显式动态断裂模拟
DOI：
10.1016/j.compstruct.2018.10.029
复制
发表时间：
2019-01
影响因子：
6.3
通讯作者：
Xiaogui Wang
中科院分区：
文献类型：
--
作者：
Yangjian Xu;ShuaiZhao;Guohui Jin;Lihua Liang;Haojie Jiang;Xiaogui Wang
为了降低实验成本，使数值模拟更接近两相材料的实际细观结构，提出了一种基于图像和参数化相结合的细观模拟方法。该方法只需提供有限的两相材料样本，即可建立骨料库，并可任意生成具有不同骨料空间分布和体积分数的有限元模型，以供虚拟试验使用。在本虚拟试验中，断裂失效是在显式动力学的框架内模拟的。利用ABAQUS中的用户子程序实现了率相关的粘聚力区模型（CZM），以表征细观结构的动态损伤和断裂。同时，提出了一种在潜在损伤区自动嵌入粘性单元的算法。最后，通过两个典型算例验证了所提出的方法和模型，并研究了骨料的空间分布和体积分数对细观结构力学性能的影响。研究结果表明，本文提出的方法和模型能够有效地表征两相材料的动态断裂行为。
In order to reduce the experimental cost and enable the numerical modelling better approaches the actual meso-structures of two-phase materials, a novel meso-scale modelling approach, combining the image-based and the parameterized modelling approaches, has been presented. In this approach, only limited samples of the studied two-phase material need to be provided for establishing an aggregate library, through which finite element models with different spatial distributions and volume fractions of aggregate can be arbitrarily generated for the use of virtual test. In the present virtual test, fracture failures were simulated in the framework of explicit dynamics. A rate-dependent cohesive zone model (CZM) was implemented through the user subroutines in ABAQUS to characterize the dynamic damage and fracture of the meso-structures. At the same time, an algorithm of embedding cohesive elements automatically into the potential damage zones was put forward. Finally, two typical numerical examples were given to verify these proposed methods and models, meanwhile the influences of spatial distribution and volume fraction of aggregate on the mechanical performance of the meso-structure were investigated. It can be validated that the present developed methods and models can effectively and efficiently characterize the dynamic fracture behavior of two-phase materials.
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影响因子：
6.3
作者：
P. Viot;R. Bouix;I. Iordanoff;J. Lataillade
通讯作者：
P. Viot;R. Bouix;I. Iordanoff;J. Lataillade
DOI：
10.1002/(sici)1097-0207(19990330)44:9
发表时间：
1999-03
影响因子：
2.9
作者：
M. Ortiz;A. Pandolfi
通讯作者：
M. Ortiz;A. Pandolfi
模拟复合材料结构粘合破坏的统一内聚区模型及其参数辨识
影响因子：
6.3
作者：
Xu Yangjian;Guo Yuanqi;Liang Lihua;Liu Yong;Wang Xiaogui
通讯作者：
Wang Xiaogui
DOI：
10.1016/j.advengsoft.2014.04.002
发表时间：
2014-08
期刊：
Adv. Eng. Softw.
影响因子：
--
作者：
Vinh Phu Nguyen
通讯作者：
Vinh Phu Nguyen
影响因子：
5.4
作者：
A. Karamnejad;Vinh Phu Nguyen;L. Sluys
通讯作者：
A. Karamnejad;Vinh Phu Nguyen;L. Sluys