An Updated Lagrangian Particle Hydrodynamics (ULPH)-NOSBPD Coupling Approach forModeling Fluid-Structure Interaction Problem  

作　　者：Zhen Wang Junsong Xiong Shaofan Li Xin Lai Xiang Liu Lisheng Liu 

机构地区：[1]Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics,Wuhan University of Technology,Wuhan,430070,China [2]Department of Civil and Environmental Engineering,The University of California,Berkeley,CA 94720,USA [3]Department of Engineering Structure and Mechanics,Wuhan University of Technology,Wuhan,430070,China

出　　处：《Computer Modeling in Engineering & Sciences》2024年第10期491-523,共33页工程与科学中的计算机建模（英文）

基　　金：open foundation of the Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics;the Open Foundation of Hubei Key Laboratory of Engineering Structural Analysis and Safety Assessment.

摘　　要：A fluid-structure interaction approach is proposed in this paper based onNon-Ordinary State-Based Peridynamics(NOSB-PD)and Updated Lagrangian Particle Hydrodynamics(ULPH)to simulate the fluid-structure interaction problem with large geometric deformation and material failure and solve the fluid-structure interaction problem of Newtonian fluid.In the coupled framework,the NOSB-PD theory describes the deformation and fracture of the solid material structure.ULPH is applied to describe the flow of Newtonian fluids due to its advantages in computational accuracy.The framework utilizes the advantages of NOSB-PD theory for solving discontinuous problems and ULPH theory for solving fluid problems,with good computational stability and robustness.A fluidstructure coupling algorithm using pressure as the transmission medium is established to deal with the fluidstructure interface.The dynamic model of solid structure and the PD-ULPH fluid-structure interaction model involving large deformation are verified by numerical simulations.The results agree with the analytical solution,the available experimental data,and other numerical results.Thus,the accuracy and effectiveness of the proposed method in solving the fluid-structure interaction problem are demonstrated.The fluid-structure interactionmodel based on ULPH and NOSB-PD established in this paper provides a new idea for the numerical solution of fluidstructure interaction and a promising approach for engineering design and experimental prediction.

关 键 词：Fluid-structure interaction(FSI) updated lagrangian particle hydrodynamics PERIDYNAMICS meshfree method 

分 类 号：O17[理学—数学]