On the Elastoplastic Dynamic Response of Steel Belt Staggered Multi-Layer Cylindrical Shell Subjected to External Blast Loading

Yuanqi Liu, Yang Du, Zhao Zhang, F. Zhou
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引用次数: 1

Abstract

The steel belt staggered multi-layer cylindrical shell is the preferred structure for high-pressure hydrogen storage vessel in refueling stations. However, it could be threatened by external blast loads from accidental hydrogen leaks and explosions. In this paper, detailed numerical model is established to analyze the elastoplastic response of such multi-layer cylindrical shell subjected to external blast loads of different TNT equivalency weights. The thermo-viscoplastic constitutive model and fluid-structure coupling approach are incorporated in the modeling. The radial displacement/vibration histories and the effective strain responses of different layers were analyzed to demonstrate the potential deformation of the shell structure. Also, the maximum strain at different locations of the shell structure are discussed. The results will be helpful to evaluate the integrity of such multi-layer cylindrical structure that undertakes the risk of external hydrogen explosion.
外爆炸荷载作用下钢带交错多层圆柱壳弹塑性动力响应研究
钢带交错多层圆柱壳是加氢站高压储氢容器的首选结构。然而,它可能受到来自意外氢气泄漏和爆炸的外部爆炸载荷的威胁。本文建立了详细的数值模型,分析了这种多层圆柱壳在不同TNT当量爆炸载荷作用下的弹塑性响应。采用热粘塑性本构模型和流固耦合方法进行建模。分析了不同层的径向位移/振动历史和有效应变响应,以证明壳结构的潜在变形。并对壳结构不同位置的最大应变进行了讨论。研究结果将有助于评价这种承担外氢爆炸风险的多层圆柱结构的完整性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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