Energy and momentum transfer to a 'fully-clamped' elastic plate in an air-blast

International Symposium on Dynamic Deformation and Fracture of Advanced Materials 2013

物理学;材料科学

Yuan, Y.^1 ; Tan, P.J.^1

Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom^1

关键词: Beneficial effects;    Elastic plate;    Fluid compressibility;    Fully clamped;    Lagrangian formulations;    Nonlinear effect;    Shock-capturing;    Single degree of freedom systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/451/1/012017/pdf
DOI  :  10.1088/1742-6596/451/1/012017

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The momentum transfer by a planar wave impinging upon a rigid, free-standing plate in water, a largely incompressible medium, is well understood [1]. Kambouchev et al. [2] extended the results of Taylor [1] to include the nonlinear effects of compressibility whilst Hutchinson [3] has recently addressed the issues of energy and momentum transfer to a rigid, free-standing plate. In this paper, key conclusions from the aforementioned studies are critically re-examined in the context of a 'fully-clamped' elastic plate. The dynamic response of an elastic plate is represented by an equivalent single-degree-of-freedom (SDOF) system. A numerical method based on a Lagrangian formulation of the Euler equations of compressible flow and conventional shock-capturing techn iques, similar to that employed in [2, 3], were employed to solve numerically the interaction between the air blast wave and elastic plate. Particular emphasis is placed on elucidating the energy and momentum transfer to a 'fully-clamped' elastic plate compared to its rigid, free-standing counterpart, and on whether enhancement in the beneficial effects of FSI as a result of fluid compressibility remains and to what extent.