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Investigation of damage effects on circular air-backed clamped plates under repeated underwater explosions.

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Bibliographic Details
Title: Investigation of damage effects on circular air-backed clamped plates under repeated underwater explosions.
Authors: Lin, Shangjian1 (AUTHOR), Wang, Jinxiang1 (AUTHOR) wjx@njust.edu.cn, Tang, Kui1 (AUTHOR) tkui2014@sina.com, Yang, Ming1 (AUTHOR), Ma, Teng1 (AUTHOR), Gu, Yangchen1 (AUTHOR), Li, Yuanbo1 (AUTHOR)
Source: Ships & Offshore Structures. Aug2026, Vol. 21 Issue 7, p969-983. 15p.
Subject Terms: *Underwater explosions, *Structural plates, *Numerical analysis, *Model validation, *Structural failures, *Deterioration of materials, *Deformations (Mechanics), *Strength of materials
Abstract: Underwater weapon explosions are a primary cause of structural damage to ships, warranting thorough investigation. Experiments and numerical analysis were conducted on a simplified circular air-backed clamped plate after four repeated damage tests in a water tank. The numerical algorithm and material parameters were verified by comparing simulations with experimental and theoretical data. The plate's damage accumulated with repeated explosions, and central deflection decreased with increased thickness, aligning with Taylor's theory. Deformation under various conditions showed that long-distance explosions after short-range ones, and small-charge explosions after large-charge ones, caused greater damage. Increasing plate yield strength up to 850 MPa didn't further reduce deformation from a single explosion but did so under multiple explosions. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
Description
Abstract:Underwater weapon explosions are a primary cause of structural damage to ships, warranting thorough investigation. Experiments and numerical analysis were conducted on a simplified circular air-backed clamped plate after four repeated damage tests in a water tank. The numerical algorithm and material parameters were verified by comparing simulations with experimental and theoretical data. The plate's damage accumulated with repeated explosions, and central deflection decreased with increased thickness, aligning with Taylor's theory. Deformation under various conditions showed that long-distance explosions after short-range ones, and small-charge explosions after large-charge ones, caused greater damage. Increasing plate yield strength up to 850 MPa didn't further reduce deformation from a single explosion but did so under multiple explosions. [ABSTRACT FROM AUTHOR]
ISSN:17445302
DOI:10.1080/17445302.2025.2452057