A coupled SPH-PD model for fluid-structure interaction in an irregular channel flow considering the structural failure

作     者：Sun, Wei-Kang Zhang, Lu-Wen Liew, K. M. 

作者机构：Shanghai Jiao Tong Univ Sch Naval Architecture Ocean & Civil Engn Dept Engn Mech Shanghai 200240 Peoples R China City Univ Hong Kong Dept Architecture & Civil Engn Kowloon Hong Kong Peoples R China City Univ Hong Kong Ctr Nat Inspired Engn Kowloon Hong Kong Peoples R China 

出 版 物：《COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING》 (应用力学和工程技术中的计算机方法)

年 卷 期：2022年第401卷第PartB期

页      面：1页

核心收录：

学科分类：08[工学] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：National Natural Science Foundation of China Research Grants Council of the Hong Kong Special Administrative Region, China [9043135, CityU 11202721] 

主　　题：Fluid-structure interaction Smoothed particle hydrodynamics Peridynamics Integrated particle model Periodic boundary condition Irregular channel flow 

摘      要：Understanding fluid-structure interaction (FSI) is important because it dominates diverse natural phenomena and engineering problems. This paper presents an integrated particle model for FSI problems involving irregular channel flows and crack propagation in structures. The proposed model is implemented as follows: (1) we couple weakly compressible smoothed particle hydrodynamics (WCSPH) with bond-based peridynamics (BBPD) in a partitioned approach (this framework has a much simpler algorithm than the previously reported SPH-PD method);(2) we propose a novel periodic boundary conditions (PBCs) algorithm for modeling flows in non-regular channels;and (3) we incorporate crack propagation in structural responses under fluid dynamics, which was rarely considered in previous works. The new framework has been validated and illustrated to be effective and versatile in diverse FSI problems, including hydrostatic pressure-induced solid deformation, violent free-surface flows and channel flows interacting with flexible structures. Compared with conventional grid-based methods, this particle framework is more user-friendly, since no extra effort is required to update meshes, even when a discontinuity appears during the modeling process. The extendibility and potential of this framework is further demonstrated by the simulation of fluid-driven deformation and crack propagation in elastomers. (c) 2022 Elsevier B.V. All rights reserved.