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Lookup NU author(s): Professor Zhiqiang Hu
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
This paper addresses experimental and numerical simulation studies on a scaled ship side shell quasi-statically punched at the mid-span by a raked bow indenter to investigate its damage characteristics from deformation to large opening. A scaled stiffened panel and a raked bow indenter are designed in model tests. Numerical simulation is performed in which the BWH criterion is implemented to simulate the fracture. The experimental and numerical results are compared well in terms of resistance-penetration curves, final damage shapes and especially the three failure models, i.e., initial fracture, model “I” crack and model “III” crack. In addition, the whole damage process, the energy dissipation characteristics of the specimen and failure related parameters in three specific failed elements corresponding to the three failure models are analyzed through numerical simulation. It demonstrates that the energy dissipated by the stiffener and frictional effect is remarkable in the crack propagation process. In addition, shell elements involved with three failure models prior to fracture are mainly subjected to tension and bending effects as shell elements cannot simulate the transverse shear effect well. Finally, the influences of the failure sequence of integration points and modeling of weld seams on the numerical simulation results are discussed.
Author(s): Zhang M, Liao X, Li S, Song S, Liu J, Hu Z
Publication type: Article
Publication status: Published
Journal: Ocean Engineering
Print publication date: 15/07/2023
Online publication date: 28/05/2023
Acceptance date: 08/05/2023
Date deposited: 28/05/2023
ISSN (print): 0029-8018
ISSN (electronic): 1873-5258
ePrints DOI: 10.57711/g87e-sy35
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