The Dynamic response of steel beam-column elements under blast loading

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2016

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Gevrek, Mebrure Itır

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The intensity of terrorist activities and threats have become a major problem in modern world. Several factors in the way modern societies live have made easier to conduct terrorism activities. Developed societies are dependent on complex and vulnerable systems that could be target, such as railways, pipelines, large shopping areas, airlines, subway systems and large business/trade centers. The increase in the number of domestic and international terrorist activities by each passing day have forced researchers to examine the behavior of structures to blast loads. In order to get a better understanding of how structural elements behave under blast loading, a number of analytical methods were developed to predict the response of steel members subjected to blast loading. The prediction of element behavior during blast loading is a complex problem given the effect of geometry and the material nonlinearity on the response. Therefore, it is needed to verify the results of analytical methods used to predict the behavior of structural elements under blast loading and to understand the effect of the model parameters on the prediction results. In this study, first, experimental results were used to verify the analytical methods. General purpose finite element software ABAQUS was used to analyze steel beam-columns subjected to blast loading and the material model parameters were calibrated. Two models, one in elastic range, the other undergoing plastic deformation were used in the calibration study. Sensitivity analyses were then conducted to understand the effect of the many modeling and loading parameters, including material models, boundary conditions and loading assumptions, on the predicted results for the blast loading of columns.

Subject Keywords

Columns., Blast effect ., Steel, Structural., Strains and stresses., Structural analysis (Engineering).

URI

http://etd.lib.metu.edu.tr/upload/12620017/index.pdf
https://hdl.handle.net/11511/25673

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

M. I. Gevrek, “The Dynamic response of steel beam-column elements under blast loading,” M.S. - Master of Science, Middle East Technical University, 2016.