Universiti Teknologi Malaysia Institutional Repository

Thermal post-impact behavior of closed-cell cellular structures with fillers - Part I

Ochsner, Andreas and Vesenjak, Matej and Ren, Zoran (2007) Thermal post-impact behavior of closed-cell cellular structures with fillers - Part I. Materials Science Forum, 553 . pp. 196-201. ISSN 0255-5476

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Official URL: http://www.scientific.net/MSF.553.196


The study describes the behavior of regular closed-cell cellular structure with gaseous fillers under impact conditions and consequent post-impact thermal conduction due to the compression of filler gas. Two dependent but different analyses types have been carried out for this purpose: (i) a strongly coupled fluid-structure interaction and (ii) a weakly coupled thermal-structural analysis. This paper describes the structural analyses of the closed-cell cellular structure under impact loading. The explicit code LS-DYNA was used to computationally determine the behavior of cellular structure under compressive dynamic loading, where one unit volume element of the cellular structure has been discretised with finite elements considering a simultaneous strongly coupled interaction with the gaseous pore filler. Closed-cell cellular structures with different relative densities and initial pore pressures have been considered. Computational simulations have shown that the gaseous filler influences the mechanical behavior of cellular structure regarding the loading type, relative density and type of the base material. It was determined that the filler's temperature significantly increases due to the compressive impact loading, which might influence the macroscopic behavior of the cellular structure

Item Type:Article
Uncontrolled Keywords:cellular structures, closed cells, gaseous pore filler, computational simulations, impact loading, fluid-structure interaction
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:9613
Deposited By: Salasiah M Said
Deposited On:24 Jun 2010 05:41
Last Modified:24 Jun 2010 05:48

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