Analysis Of Blast Loaded Structures
By Numerical Simulation
Author(s)
A. Klomfass, G. Heilig & K. Thoma
Abstract
This paper addresses conceptual and numerical aspects regarding the simulation
of blast-structure interaction and discusses modelling and software issues. As an
example of coupled codes we present our in-house developed codes APOLLO
(CFD) and SOPHIA (CSD), which are equipped with MpCCI software
interfaces. The paper is concluded with the presentation of three representative
applications, which are a basic shock tube experiment, tests conducted with a
container-like structure in the Large Blast Simulator LBS 501 and model scale
experiments of underwater shock propagation in ducts.
Keywords: blast loading, fluid-structure interaction, coupled simulation,
underwater explosion, coupling methods, ALE, overset grids.
1 Introduction
The interaction of a blast wave with an object consists of the initial refraction of
the wave front and the subsequent transient flow about the object. The stresses
excerted on the object during these phases lead to a structural response, which in
general consists of
induced stress waves and vibrations,
structural deformation and potentially failure (elastic-plastic response),
acquired velocity and displacement (rigid body motion).
The terminology interaction refers to an inter-dependency of loading and
response. Such can exist in both phases of the process: the refraction and
transmission of the incident wave front is affected by the impedance ratio
between ambient medium and loaded object, the transient flow phase can be
affected by changes in shape or displacement of the object. Estimates concerning
Keywords
blast loading, fluid-structure interaction, coupled simulation,
underwater explosion, coupling methods, ALE, overset grids.
Related Book
Other papers in this volume
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