Numerical Analysis Of The Interactive Behavior
Of Concrete Structures Under Explosive Loading
Author(s)
M. Beppu, M. Katayama, M. Itoh, T. Ohno & T. Krauthammer
Abstract
This study presents numerical simulations of dynamic fractures of two concrete
structures subjected to explosive loading using the hydrocode AUTODYN. In
the analytical model, the Euler-Lagrange Coupling method was employed. First,
a method to predict the propagation of a blast wave from inside to outside of an
arch was proposed. Next, the failure behavior of an actual large tunnel structure
with inner steel liner was simulated. Results from the analysis demonstrated that
complicated physical systems could be simulated with appropriate computer
codes, numerical modeling, and materials.
Keywords: AUTODYN, concrete structure, explosive loading.
1 Introduction
In order to evaluate the safety of structures and facilities against explosion
incidents, it is necessary to establish a method to predict structural failure under
explosive loading. However, it is not easy to account for the interaction between
the blast wave and structures in the numerical model. This study presents
numerical simulations of dynamic responses of two concrete structures subjected
to explosive loading using the hydrocode AUTODYN. In the analytical model,
the Euler-Lagrange Coupling method was employed. Air and the explosive TNT
were modeled by the Eulerian method. Concrete structures were modeled by the
Lagrangian method. The Mohr-Coulomb failure criterion and a newly proposed
failure criterion were used for the concrete material for each structures. The
Keywords
AUTODYN, concrete structure, explosive loading.
Related Book
Other papers in this volume
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