Multiscale analysis-based peridynamic simulation of fracture in porous media

作     者：Zihao YANG Shangkun SHEN Xiaofei GUAN Xindang HE Junzhi CUI Zihao YANG;Shangkun SHEN;Xiaofei GUAN;Xindang HE;Junzhi CUI

作者机构：School of Mathematics and StatisticsNorthwestern Polytechnical UniversityXi’an 710072China School of Mathematical SciencesTongji UniversityShanghai 200092China School of MechanicsCivil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an 710072China LSECICMSECAcademy of Mathematics and Systems ScienceCASBeijing 100190China 

出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)

年 卷 期：2024年第18卷第1期

页      面：1-13页

核心收录：

学科分类：08[工学] 0814[工学-土木工程] 080101[工学-一般力学与力学基础] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDC06030102) the Natural Science Foundation of Chongqing(No.CSTB2022NSCQ-MSX0296) the National Natural Science Foundation of China(Grant No.12271409) the Natural Science Foundation of Shanghai(No.21ZR1465800) the Interdisciplinary Project in Ocean Research of Tongji University and the Fundamental Research Funds for the Central Universities 

主　　题：porous media multiscale variable-horizon peridynamic equivalent critical stretch equivalent micro-modulus 

摘      要：The simulation of fracture in large-scale structures made of porous media remains a challenging *** techniques either assume a homogeneous model,disregarding the microstructure characteristics,or adopt a micro-mechanical model,which incurs an intractable computational cost due to its complex stochastic geometry and physical properties,as well as its nonlinear and multiscale *** this study,we propose a multiscale analysis-based dual-variable-horizon peridynamics(PD)model to efficiently simulate macroscopic structural *** influence of microstructures in porous media on macroscopic structural failure is represented by two PD parameters:the equivalent critical stretch and *** equivalent critical stretch is calculated using the microscale PD model,while the equivalent micro-modulus is obtained through the homogenization method and energy density equivalence between classical continuum mechanics and PD *** examples of porous media with various microstructures demonstrate the validity,accuracy,and efficiency of the proposed method.