Dynamic similitude theory for predicting the response of liquid storage structure subjected to explosion-induced ground shock

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL Thin-Walled Structures Pub Date : 2025-06-01 Epub Date: 2025-02-12 DOI:10.1016/j.tws.2025.113070

Haotian Zhang , Chunming Song , Mingyang Wang , Jiahe Zhong

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Abstract

The dynamic response of the liquid storage structure (LSS) under explosion-induced ground shock is highlighted in engineering protection. Establishing a dynamic similarity relationship between the structural model and its prototype is essential for enhancing the quality of the experimental investigations. The conditions necessary for achieving similarity were derived through dimensional analysis. Additionally, the equation analysis method was employed to determine the similarity laws governing the dynamic characteristic parameters and responses. Two-way fluid-structure interaction finite element models were developed to validate the accuracy of the similarity criterion. The findings indicated that critical response parameters, including structural deflection, hydrodynamic pressure, and structural strain, adhere to the established similarity laws when the material properties, dimensions of the LSS, and the ground shock parameters meet the requisite similarity conditions. Based on the similarity criterion, the response results obtained from the model LSS can be quantitatively extrapolated to the prototype.

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基于动力相似理论的储液结构在爆炸地面冲击作用下的响应预测

储液结构在爆炸地面冲击作用下的动力响应是工程防护的重点。建立结构模型与原型之间的动态相似关系是提高试验研究质量的关键。通过量纲分析，导出了实现相似的必要条件。此外，采用方程分析法确定了结构动力特性参数与响应的相似规律。建立了双向流固耦合有限元模型，验证了相似准则的准确性。研究结果表明，当材料性能、结构尺寸和地面冲击参数满足相似条件时，结构挠度、动水压力和结构应变等关键响应参数遵循既定的相似规律。基于相似准则，从模型LSS得到的响应结果可以定量外推到原型。

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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.