Experimental, numerical, and dimensionless analysis studies for the structural response of steel plates under repeated internal blasts

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-09-12 DOI:10.1016/j.tws.2025.113973

Haoqing Ding, Haocheng Tian, Kang Li, Yutao Hu, Changli Wang, Zhun Bai, Xin Zhang, Bingwen Qian

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引用次数: 0

Abstract

Internal blasts are more destructive than air blasts due to the multiple reflection overlays of explosive shock waves in the confined space. This paper conducts experimental, numerical, and dimensionless analysis studies for the structural response of steel plates subjected to repeated confined blasts. A couple of experiments, including different charge masses, stand-off distances, and blast number, are conducted to investigate the response of steel plates to a confined blast device. Experimental results show that the deflection of the target plate close to the blast point was smaller. The progressive deflection is decreased for repeated blasts. Then, a numerical simulation model is built further to investigate the structural response characteristics for repeated confined blasts. Finally, an empirical model is proposed to predict the central permanent displacement of the target plate under repeated confined blasts. This model considers the material and structure parameters of the target plates, the charge parameters, the local properties of the blast loading, and the influence of the venting. Results show that this model can predict the midpoint displacements of the target plates well.

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重复内爆作用下钢板结构响应的实验、数值和无因次分析研究

由于爆炸冲击波在密闭空间内的多重反射叠加，内爆比空爆具有更强的破坏力。本文对反复密闭爆炸作用下钢板的结构响应进行了实验、数值和无因次分析研究。通过不同装药质量、离爆距离和爆炸次数的实验，研究了钢板对密闭爆炸装置的响应。实验结果表明，靠近爆炸点的靶板挠度较小。对于重复爆炸，渐进式偏转会减少。在此基础上，进一步建立数值模拟模型，研究重复密闭爆炸作用下结构的响应特性。最后，提出了重复密闭爆炸作用下靶板中心永久位移的经验模型。该模型考虑了靶板的材料和结构参数、装药参数、爆炸载荷的局部特性以及通风的影响。结果表明，该模型能较好地预测靶板的中点位移。

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.