Dynamic response and damage characterization of the clamped plate subjected to underwater explosions with double charges

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-03-08 DOI:10.1016/j.tws.2025.113177

Lele Cheng , Fenglei Huang , Haijun Wu , Ximin Deng , Junhao You

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引用次数: 0

Abstract

Understanding the dynamic responses and damage mechanisms of thin-walled metal structures under complex loading conditions is crucial for the safety of marine vessels. Previous research has predominantly focused on the dynamic response behavior of thin-walled structures under sequentially repeated loads, without considering the damage effects induced by the simultaneous application of multiple loads. This study employs a combination of experimental and numerical approaches to systematically investigate the dynamic responses and damage characteristics of thin-walled steel plates subjected to simultaneous double-charge underwater explosions. The experimental and simulation results reveal that the sustained propagation of transmitted waves in a water-backed environment influences the bubble expansion behavior, resulting in the deformation rebound of the plates. Furthermore, the concave deformations in the plate are aligned along the symmetry plane of the two charges, resulting in the development of a trace line during the deformation process. In addition, the influence of the pre-pierced holes on the plate deflection within the plastic range is negligible. An optimal spacing range for double-charges at a given standoff distance is identified, which results in the maximum plate deflection. These findings provide valuable insights into the damage to thin-walled structures under simultaneous multi-load conditions and offer new perspectives for enhancing protective design in ship engineering.

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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.