Application of a coupled Eulerian-Lagrangian method to simulate interactions between deformable composite structures and compressible multiphase flow

• Published in: International journal for numerical methods in engineering Vol. 80; no. 12; pp. 1497 - 1519
• Main Authors: Xie, Wenfeng, Liu, Zhanke, Young, Yin Lu
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 17.12.2009; Wiley
• Subjects: Applied sciences; Buildings. Public works; composite structure; Composite structures; Compressible flows; shock and detonation phenomena; compressible multiphase flow; Deformation; Exact sciences and technology; Fluid dynamics; fluid-structure interaction; Formability; Fundamental areas of phenomenology (including applications); Hydraulic constructions; Marine; Mathematical models; Multiphase flow; Nonhomogeneous flows; Numerical analysis; Offshore structure (platforms, tanks, etc.); Physics; Shock-wave interactions and shock effects; Solid mechanics; Structural and continuum mechanics; Two dimensional; underwater explosion; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); Compressible fluid; Euler Lagrange equation; composite structure; Vibrations; Underwater explosions; Impact strength; Propulsion; Modelling; Lagrangian; Multiphase flow; Dynamic loads; Marine structure; Experimental study; Axial symmetry; Weight; compressible multiphase flow; Shock waves; fluid-structure interaction; Marine platform; Blast wave; Ship hull; Offshore structure; underwater explosion; Compressible flow; Submarine vehicle; Mechanical shock
• ISSN: 0029-5981; 1097-0207
• DOI: 10.1002/nme.2667

Interactions between deformable composite structures and compressible multiphase flow are common for many marine/submarine problems. Recently, there has been an increased interest in the application of composite structures in marine industry (e.g. propulsion system, ship hulls, marine platforms, marine turbines, etc) to take advantage their high stiffness to weight and strength to weight ratios, and high impact/shock resistance characteristics. It is therefore important to evaluate the performance of composite structures subject to dynamic loads. In this paper, a coupled Eulerian–Lagrangian numerical method is proposed to model the two‐dimensional (2D) or axisymmetric response of deformable composite structures subject to shock and blast loads. The method couples an Eulerian compressible multiphase fluid solver with a general Lagrangian solid solver using an interface capturing method, and is validated using analytical, numerical, and experimental results. A 2D case study is shown for an underwater explosion beneath a three‐layered composite structure with clamped ends. The importance of 2D fluid–structure interaction effects on the transient response between composite structures and compressible multiphase flow is discussed. Copyright © 2009 John Wiley & Sons, Ltd.