Abstract：A numerical simulation model for Ma Chang Ping highway toll station under lorry-blasting was established by employing fluid-structure coupling algorithm LS-DYNA. The shock wave overpressure, failure process and failure mode of the spatial truss structure subjected to explosion were numerically simulated. And to get the explicit expression of the shock wave pressure field and the principal eigenmodes, the blast overpressure data of the finite points at internal surface of the spatial truss structure were extracted and were decomposed by proper orthogonal decomposition (POD) method. Through the comparative analysis of the simulation results and actual destruction of the toll station, the failure mechanism and causes of the explosive damage for the spatial truss structure were revealed. The numerical results showed that LS-DYNA nonlinear finite element model combined with the POD method are capable of accurately simulating the destruction process and damage model of the spatial truss structure under blast, and that adequate venting could prevent collapse of the spatial truss structure from explosion and could avoid injury to persons. The design principle of strong structure weak envelope is proposed for blast-resistant and explosion-proof of the spatial truss structure.
高轩能;刘颖;杨维英. 马场坪收费站汽车爆炸破坏的数值模拟分析[J]. , 2012, 31(21): 184-189.
GAO Xuan-neng;LIU Ying;YANG Wei-ying. Numerical Simulation for the Damage of Ma Chang Ping Highway Toll Station under Lorry-blasting. , 2012, 31(21): 184-189.
2012, Vol. 31 
