Status已發表Published
Structural dynamical characteristics induced by vented hydrogen explosion
Hao, T.; Wang, C.; Yan, W.; Ren, W.
2020-06-01
Source Publication爆炸与冲击
ISSN1001-1455
Pages065401-1-065401-12
Abstract氢能因具有环保高效等优点,被公认为21 世纪最具发展前景的清洁能源,缺点是在使用过程中极易发生 爆炸事故。泄爆作为爆炸防护的重要手段,可以有效提高结构在爆炸过程中的安全性和可靠性。为获得结构在氢气 泄爆作用下的动力响应特性,本文从实验和数值模拟两个方面展开研究。在12 m×2.5 m×2.5 m 的大尺度ISO 标准容器 中开展了一系列氢气泄爆实验,主要考虑氢气体积分数、点火位置、障碍物布置等参数的影响,并对结构内部超压荷 载特征和动力响应演化规律进行了分析。结果表明,结构位移由首个超压峰值主导,并在该阶段与方舱内超压趋势保 持一致,且两者峰值之间保持线性关系;加速度则由不稳定燃烧引起的超压高频振荡主导。在实验范围内,位移峰值 受氢气体积分数影响显著,且随着氢气体积分数增大而增大。加速度峰值则还受到点火位置的影响,中心点火的情景 要大于后端点火的情景。障碍物数量对结构动力响应的影响并非单调关系。此外,基于现场环境振动测试结果,建立 了该结构的基准有限元模型。数值模拟及实验结果吻合良好,因此该基准有限元模型可进一步用于不同工况下氢气 泄爆荷载作用下结构动力响应的预测和分析。
Keyworddynamic response vented hydrogen explosion overpressure load baseline finite element model
Language其他語言Others
The Source to ArticlePB_Publication
PUB ID62811
Document TypeJournal article
CollectionTHE STATE KEY LABORATORY OF INTERNET OF THINGS FOR SMART CITY (UNIVERSITY OF MACAU)
Corresponding AuthorYan, W.
Recommended Citation
GB/T 7714
Hao, T.,Wang, C.,Yan, W.,et al. Structural dynamical characteristics induced by vented hydrogen explosion[J]. 爆炸与冲击, 2020, 065401-1-065401-12.
APA Hao, T.., Wang, C.., Yan, W.., & Ren, W. (2020). Structural dynamical characteristics induced by vented hydrogen explosion. 爆炸与冲击, 065401-1-065401-12.
MLA Hao, T.,et al."Structural dynamical characteristics induced by vented hydrogen explosion".爆炸与冲击 (2020):065401-1-065401-12.
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