Incremental explosive analysis and its application to performance-based assessment of stiffened and unstiffened plates

Document Type: Research Paper

Authors

1 Civil Engineering Department, Hormozgan University, Bandar Abbas, Iran

2 Mechanical Engineering Department, Buein Zahrah Technical University, Qazvin 3451745346, Iran

Abstract

In this paper, the dynamic behavior of square plates with various thicknesses and stiffening configurations subjected to underwater explosion (UNDEX) are evaluated through a relatively novel approach which is called Incremental Explosive Analysis (IEA). The IEA estimates the different limit-states and deterministic assessment of plats’ behavior, considering uncertainty of loading conditions and dynamic nature of explosive loading. In this new approach, intensity parameter of explosive loading is enhanced in an incremental manner and response of the target plate is recorded for every depth-stand-off loading condition. Then, the multi IEA curves are derived from several simulation results. The fractiles method is employed to summarize large amount of IEA curves’ data in a predictive mode. In addition, some summarized damage probability indicators such as fragility curves are extracted that provide useful information for quantitative damage analysis of plates in UNDEX loading. Results show that the IEA is a promising method for performance-based assessment of marine structures subjected to UNDEX loading.

Keywords

Main Subjects

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Volume 48, Issue 2
December 2017
Pages 253-270
  • Receive Date: 29 June 2017
  • Revise Date: 30 August 2017
  • Accept Date: 25 September 2017