FRACTURE FAILURE OF REINFORCED CONCRETE SLABS SUBJECTED TO BLAST LOADING USING THE COMBINED FINITE-DISCRETE ELEMENT METHOD

Authors

  • Z. M. JAINI JAMILUS RESEARCH CENTER UNIVERSITY TUN HUSSEIN ONN MALAYSIA 86400 BATU PAHAT, JOHOR, MALAYSIA HTTP://ORCID.ORG/0000-0002-9236-6434
  • Y. T. FENG ZIENKIEWICZ CENTER FOR COMPUTATIONAL ENGINEERING, SWANSEA UNIVERSITY, SA18EN WALES, UNITED KINGDOM
  • D. R. J. OWEN ZIENKIEWICZ CENTER FOR COMPUTATIONAL ENGINEERING, SWANSEA UNIVERSITY, SA18EN WALES, UNITED KINGDOM
  • S. N. MOKHATAR JAMILUS RESEARCH CENTER, UNIVERSITY TUN HUSSEIN ONN, 86400 JOHOR, MALAYSIA

Keywords:

FRACTURE, THE COMBINED FINITE-DISCRETE ELEMENT METHOD, REINFORCED CONCRETE SLAB, BLAST LOADING

Abstract

NUMERICAL MODELING OF FRACTURE FAILURE IS CHALLENGING DUE TO VARIOUS ISSUES IN THE CONSTITUTIVE LAW AND THE TRANSITION OF CONTINUUM TO DISCRETE BODIES. THEREFORE, THIS STUDY PRESENTS THE APPLICATION OF THE COMBINED FINITE-DISCRETE ELEMENT METHOD TO INVESTIGATE THE FRACTURE FAILURE OF REINFORCED CONCRETE SLABS SUBJECTED TO BLAST LOADING. IN NUMERICAL MODELING, THE INTERACTION OF NON-UNIFORM BLAST LOADING ON THE CONCRETE SLAB WAS MODELED USING THE INCORPORATION OF THE FINITE ELEMENT METHOD WITH A CRACK ROTATING APPROACH AND THE DISCRETE ELEMENT METHOD TO MODEL CRACK, FRACTURE ONSET AND ITS POST-FAILURES. A TIME VARYING PRESSURE-TIME HISTORY BASED ON THE MAPPING METHOD WAS ADOPTED TO DEFINE BLAST LOADING. THE MOHR-COULOMB WITH RANKINE CUT-OFF AND VON-MISES CRITERIA WERE APPLIED FOR CONCRETE AND STEEL REINFORCEMENT RESPECTIVELY. THE RESULTS OF SCABBING, SPALLING AND FRACTURE SHOW A RELIABLE PREDICTION OF DAMAGE AND FRACTURE.

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Published

2016-02-27

Issue

Vol. 13 No. 6 (2016)

Section

Articles

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