This paper adopts both explicit and implicit finite element methods in a specialist package LS-DYNA to investigate the nonlinear, dynamic response of a long span shell roof structure when subjected to blast loading. Parametric studies have been carried out on blast loaded laminated glass plates with reference to experimental results obtained by European researchers. A case study that has been chosen is a light rail station in The Netherlands called The Erasmusline. Following the detonation of 15kg TNT charge, explicit analysis showed breakage surrounding the rigid supports along the edge beam where modal vibrations are restrained. An implicit analysis has confirmed the resonances in global eigen-frequencies where most blast damage is localized around the roof canopy hence producing cracking and potential glass detachment from the panels without full structural demolition. This insight from this study will inform structural engineers about the potential modes of failure and preventative strategies to minimize further secondary losses of life or assets from a terrorist attack.

中文翻译：

---

大跨度结构上薄壳屋盖的非线性爆破响应

本文采用专业软件包 LS-DYNA 中的显式和隐式有限元方法来研究大跨度壳屋盖结构在承受爆炸载荷时的非线性动态响应。参考欧洲研究人员获得的实验结果，对爆破加载的夹层玻璃板进行了参数研究。已选择的一个案例研究是荷兰的一个名为 The Erasmusline 的轻轨站。15号爆炸后公斤 TNT 装药，明确的分析表明，沿边梁的刚性支撑周围有破损，模态振动受到限制。一项隐含的分析证实了全球特征频率的共振，其中大多数爆炸损坏位于屋顶天篷周围，因此在没有完全结构拆除的情况下产生裂缝和潜在的玻璃从面板上脱落。这项研究的这一见解将为结构工程师提供有关潜在故障模式和预防策略的信息，以最大限度地减少恐怖袭击造成的进一步二次生命或资产损失。