Mesh Size Effect in Numerical Simulation of Blast Wave Propagation and Interaction with Structures

作     者：师燕超 李忠献 郝洪 SHI Yanchao1,LI Zhongxian1,HAO Hong1,2 (1.School of Civil Engineering,Tianjin University,Tianjin 300072,China;2.School of Civil and Resource Engineering,The University of Western Australia,WA 6009,Australia)

作者机构：School of Civil EngineeringTianjin University School of Civil and Resource EngineeringThe University of Western Australia 

出 版 物：《Transactions of Tianjin University》 (天津大学学报（英文版）)

年 卷 期：2008年第14卷第6期

页      面：396-402页

核心收录：

学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Supported by National Natural Science Foundation of China (No.50638030, 50528808) the National Key Technologies R&D Program of China (No.2006BAJ13B02) the Australian Research Council (No.DP0774061) 

主　　题：mesh size effect numerical simulation sensitivity blast wave propagation blast load structures 

摘      要：Numerical method is popular in analysing the blast wave propagation and interaction with ***,because of the extremely short duration of blast wave and energy trans-mission between different grids,the numerical results are sensitive to the finite element mesh *** numerical simulations show that a mesh size acceptable to one blast scenario might not be proper for another case,even though the difference between the two scenarios is very small,indicating a simple numerical mesh size convergence test might not be enough to guarantee accu-rate numerical ***,both coarse mesh and fine mesh were used in different blast scenarios to investigate the mesh size effect on numerical results of blast wave propagation and interaction with *** on the numerical results and their comparison with field test re-sults and the design charts in TM5-1300,a numerical modification method was proposed to correct the influence of the mesh size on the simulated *** can be easily used to improve the accu-racy of the numerical results of blast wave propagation and blast loads on structures.