Coupling of Peridynamics and Numerical Substructure Method for Modeling Structures with Local Discontinuities

作     者：Baoyin Sun Shaofan Li Quan Gu Jinping Ou 

作者机构：Faculty of Infrastructure EngineeringDalian University of TechnologyDalian116024China School of Architecture and Civil EngineeringXiamen UniversityXiamen361005China Department of Civil and Environmental EngineeringUniversity of CaliforniaBerkeleyCA 94720USA 

出 版 物：《Computer Modeling in Engineering & Sciences》 (工程与科学中的计算机建模（英文）)

年 卷 期：2019年第120卷第9期

页      面：739-757页

核心收录：

学科分类：07[理学] 0835[工学-软件工程] 070102[理学-计算数学] 0811[工学-控制科学与工程] 0701[理学-数学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Financial support by the National Key Research and Development program of China under Grant No.2016YFC0701106 the National Natural Science Foundation of China under grants No.51578473 the program of China Scholarship Council(CSC,No.201606060083)are gratefully acknowledged 

主　　题：Peridynamic numerical substructure method local discontinuities crack 

摘      要：Peridynamics(PD)is a widely used theory to simulate discontinuities,but its application in real-world structural problems is somewhat limited due to the relatively *** numerical substructure method(NSM)presented by the authors and co-workers provides an efficient approach for modeling structures with local nonlinearities,which is usually restricted in problems of continuum *** this paper,an approach is presented to couple the PD theory with the NSM for modeling structures with local discontinuities,taking advantage of the powerful capability of the PD for discontinuities simulation and high computational efficiency of the *** structure is simulated using liner elastic finite element(FE)model while the local cracking regions are isolated and simulated using a PD substructure model.A force corrector calculated from the PD model is applied on the FE model to consider the effect of *** PD is integrated in the substructure model using interface elements with embedded PD *** equations of motions of both the NSM system and the PD substructure are solved using the central difference *** examples of two-dimensional(2D)concrete cantilever beams under the concentrated force are investigated to verify the proposed coupling approach.