Numerical simulation of steel floating-roof storage tank destruction under blast impact

doi:10.16265/j.cnki.issn1003-3033.2017.05.012

Abstract

Abstract: For the sake of exploring the damage mechanism of steel storage tank with a floating roof under the blast impact, the process of structural failure and changes in interal forces were researched through theoretical analysis, scaled model test and numeical simulations. It is found that the tank walls produce a great compressive internal force in the circumferential direction, because of the instantaneous impact. Besides, the upper area yields and the tank body loses its stability, as well as a concave and buckling region appears in the structure in the process of approaching elastic-plastic response. Moreover, the tensile (or compressive) stress and stress giving birth to bending moment are main internal forces, but the effect of tensile (or compressive) stress is much obvious. The walls form a compressive state and a tensile state in their circumferential and axial directions respectively.

Key words: floating roof storage tank, blast impact, scaled model explosion experiment, failure state numerical simulation

CLC Number:

X932

LU Shengzhuo, CHEN Weidong, WANG Wei, ZHANG FengchaoMA Jingxin, SHI Yaqin. Numerical simulation of steel floating-roof storage tank destruction under blast impact[J]. China Safety Science Journal, 2017, 27(5): 64-69.

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