An Experimental Method for Box Girders Subjected to Underwater Explosions Considering the Initial Bending Moment

ZHENG Jian; LU Fang-yun; LI Xiang-yu; LIANG Wen; CHEN Rong

doi:10.11993/j.issn.2096-3920.2022.03.017

Volume 30 Issue 3

Jul 2022

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ZHENG Jian, LU Fang-yun, LI Xiang-yu, LIANG Wen, CHEN Rong. An Experimental Method for Box Girders Subjected to Underwater Explosions Considering the Initial Bending Moment[J]. Journal of Unmanned Undersea Systems, 2022, 30(3): 398-404. doi: 10.11993/j.issn.2096-3920.2022.03.017

Citation:

ZHENG Jian, LU Fang-yun, LI Xiang-yu, LIANG Wen, CHEN Rong. An Experimental Method for Box Girders Subjected to Underwater Explosions Considering the Initial Bending Moment[J]. Journal of Unmanned Undersea Systems, 2022, 30(3): 398-404. doi: 10.11993/j.issn.2096-3920.2022.03.017

Citation:

ZHENG Jian, LU Fang-yun, LI Xiang-yu, LIANG Wen, CHEN Rong. An Experimental Method for Box Girders Subjected to Underwater Explosions Considering the Initial Bending Moment[J]. Journal of Unmanned Undersea Systems, 2022, 30(3): 398-404. doi: 10.11993/j.issn.2096-3920.2022.03.017

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An Experimental Method for Box Girders Subjected to Underwater Explosions Considering the Initial Bending Moment

doi: 10.11993/j.issn.2096-3920.2022.03.017

College of Liberal Arts and Science, National University of Defense Technology, Changsha 410073, China

Received Date: 2022-03-08
Rev Recd Date: 2022-05-07

Available Online: 2022-06-27

Abstract

Abstract

Box girders are commonly used in underwater explosion experiments on scaled ships. Owing to the challenges associated with materials and welding techniques, the plate thickness of the box girders is always greater than that of a completely geometrically similar model, which leads to increased bending stiffness. Therefore, underwater explosion tests based on these models will underestimate the power of underwater explosions and test results are difficult to map directly to accurate models. To offset the influence of excessive bending stiffness, a method that can easily control the amplitude and distribution of the introduced initial bending moment is proposed. Based on the results of a set of comparative experiments, we determined that the proposed method can reduce the influence of model plate thickness and can be used to study the influence of the bending moment on the underwater explosion responses of box girders. This method can provide a reference for the design of underwater explosion experiments on scaled ships.
- underwater explosion experiment,
- bending moment,
- box girder

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References(15)

References

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