Immersed particle method for fluid-structure interaction

• Published in: International journal for numerical methods in engineering 2010-01, Vol.81 (1), p.48-71
• Main Authors: Rabczuk, Timon, Gracie, Robert, Song, Jeong-Hoon, Belytschko, Ted
• Format: Article
• Language: English
• Subjects: Computational fluid dynamics; Computational techniques; dynamic fracture; Exact sciences and technology; Fluid flow; Fluid-structure interaction; Fluids; Fracture mechanics; Fracture mechanics (crack, fatigue, damage...); Fracturing; Fundamental areas of phenomenology (including applications); Joining; Mathematical methods in physics; Mathematical models; meshfree method; Physics; Solid mechanics; Structural and continuum mechanics; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
• ISSN: 0029-5981; 1097-0207
• DOI: 10.1002/nme.2670

A method for treating fluid–structure interaction of fracturing structures under impulsive loads is described. The coupling method is simple and does not require any modifications when the structure fails and allows fluid to flow through openings between crack surfaces. Both the fluid and the structure are treated by meshfree methods. For the structure, a Kirchhoff–Love shell theory is adopted and the cracks are treated by introducing either discrete (cracking particle method) or continuous (partition of unity‐based method) discontinuities into the approximation. Coupling is realized by a master–slave scheme where the structure is slave to the fluid. The method is aimed at problems with high‐pressure and low‐velocity fluids, and is illustrated by the simulation of three problems involving fracturing cylindrical shells coupled with fluids. Copyright © 2009 John Wiley & Sons, Ltd.