| In recent years, the accident and hazards such as explosion etc. take place worldwide time and again, people pay more and more attention to accidents subjected to explosion. Blast can take serious damage to structures, serious casualties and property losses appear. In particular terrorism and regional conflicts, the domestic and foreign researchers on the study of how to make explosion is reduced to the minimum, how to strengthen the building of the antiknock properties have done a lot of research. Sometimes the interior of the building such as a gas leak, storing inflammable and explosive accident explosion also occur frequently, and serious causes the whole house and surrounding building damage, collapse.The process of explosion is highly sophisticated. The analysis to its accuracy is not very high. The main method is:model test and numerical simulation. As a result of model test cost, and explosion time soon, it is very difficult to observe the phenomenon of instant of detonation, numerical simulation can solve these difficulties. Judging from home and abroad research, numerical simulation using software ANSYS-LSDYNA is widely used in the practical engineering application, the effect is very good.This paper is mainly to ANSYS-LSDYNA numerical simulation software based on the ordinary reinforced concrete plate, and several kinds of fiber reinforced concrete plate in the near distance Under explosion loading dynamic response were analyzed, comparison of different materials under different dynamic response. The main work of this paper has:(1) Introduced domestic and foreign research progress on explosion problem, the use of numerical simulation methods are compared, find the model and method this paper reinforced concrete slab under the explosive load.(2) This paper is mainly through the establishment of ANSYS model, the use of LS-DYNA dynamic response analysis, determine the key part of the H-J-C, As well as other numerical simulation in the use of various material model and the equation of state parameter.(3) Application of LS-DYNA software for the reinforced concrete plates and several kinds of fiber reinforced concrete numerical simulation, Analysis of several slab under explosive loads, crater diameter and depth, collapse of the diameter and depth And the experimental results are compared and analyzed. |
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