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Structural Engineering and Mechanics Volume 32, Number 2, May30 2009 , pages 235-249 DOI: https://doi.org/10.12989/sem.2009.32.2.235 |
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Modelling of concrete structures subjected to shock and blast loading: An overview and some recent studies |
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Yong Lu
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| Abstract | ||
| The response of concrete structures subjected to shock and blast load involves a rapid transient phase, during which material breach may take place. Such an effect could play a crucial role in determining the residual state of the structure and the possible dispersion of the fragments. Modelling of the transient phase response poses various challenges due to the complexities arising from the dynamic behaviour of the materials and the numerical difficulties associated with the evolving material discontinuity and large deformations. Typical modelling approaches include the traditional finite element method in conjunction with an element removal scheme, various meshfree methods such as the SPH, and the mesoscale model. This paper is intended to provide an overview of several alternative approaches and discuss their respective applicability. Representative concrete material models for high pressure and high rate applications are also commented. Several recent application studies are introduced to illustrate the pros and cons of different modelling options. | ||
| Key Words | ||
| shock and blast; concrete structure; numerical simulation; finite element method; meshfree method; mesoscale model. | ||
| Address | ||
| Yong Lu: Institute for Infrastructure and Environment, School of Engineering, The University of Edinburgh, Edinburgh EH9 3JL, UK | ||