A Study Of A Moderately Reinforced
Concrete Wall Subject To High Rate Loadings
Due To Impacting Bodies
Author(s)
P. P. Papados, R. L. Hall & D. Pelessone
Abstract
This paper addresses the interaction of multiple bodies impacting a deformable
structure. It addresses the errors arising from using simplified versus more
accurate representations of the multi-body impacting entities. In the past,
researchers avoided the explicit modeling of the impacting bodies and resorted to
the use of a crude pressure-time history representing the transfer of impulse
(kinetic energy) from the impacting entities to the target. The reasons for these
oversimplifications arose from hardware and software limitations. The drawback
is that the errors arising from such an approach are extremely high and, in many
cases, unacceptable. The advent, however, of parallel platforms and scalable
software in conjunction with more sophisticated material models allow the
researchers to approach the problem at hand within a reasonable turn-around
time. In the current study, only explicit modeling of the impacting bodies will be
addressed. The focus of this paper is to discuss the current methodology for
modeling multi-body impact, the possible options of simplified versus
non-simplified numerical simulations, and to provide a measure of error
introduced by comparing the two approaches.
Keywords: multi-bodies, erosion, error estimate, impact, dynamics, kinetic
energy, constitutive laws, scalable software.
1 Introduction
The interaction of multiple bodies impacting a target or targets of different
structural and material consistency has been a subject of research for several
Keywords
multi-bodies, erosion, error estimate, impact, dynamics, kinetic
energy, constitutive laws, scalable software.
Related Book
Other papers in this volume
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