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《Journal of Vibration and Shock》 2011-09
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Analysis of explosive shock wave pressure distribution on large-space cylindrical reticulated shell based on LS-DYNA

GAO Xuan-neng,LIU Ying,WANG Shu-peng(College of Civil Engineering,Huaqiao University,Quanzhou Fujian 362021,China)  
By employing algorithm ANSYS/LS-DYNA and based on the proof of correctness and reliability of the model and parameters selection,an appropriate model for calculating the shock wave pressure distribution on a large-spacec ylindrical reticulated shell under explosive loading was established.Using the proper orthogonal decomposition(POD) method,the problems of spatiotemporal asynchrony of shock waveforms and pressure distribution on the large-space structure surface were solved,accompanying with the process for calculation of dynamic response of large-space structure greatly reduced and simplified.The numerical simulation and analysis on shock wave pressure field of the shell under explosion was carried out.The influences of the span and the ratio of rise to span on the pressure distribution was investigated.The results show that the calculation model is suitable for the dynamic response analysis of large-space cylindrical reticulated shell under explosion.
【Fund】: 国家自然科学基金项目(51008133);; 福建省自然科学基金项目(2011J01319);; 厦门市科技计划项目(3502Z20073036)
【CateGory Index】: O383.2
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