Research on Dynamic Response of Shell Structure under Underwater Shock Wave Load

DOI

10.2991/978-94-6463-780-9_2How to use a DOI?

Keywords

underwater shock wave load; shell; dynamic response; deformation mode; vertical displacement

Abstract

To investigate the dynamic response of shell structure under underwater shock wave load, a three-dimensional numerical model for the typical shell structure under underwater shock wave load was established based on Arbitrary Lagrangian Eulerian algorithm. The dynamic response, deformation and failure mode of steel prefabricated hemispherical and semi-cylindrical sitting-bottom shell structures under different explosive equivalent and explosive distance were analyzed. The calculation results demonstrate that the peak displacement, deformation and effective stress increase with the increase of explosive equivalent and the decrease of explosive distance. The semi-cylindrical steel shell has obvious deformation in the mid-span area, the upper part of the bottom side constraints and the side walls at both ends. The upper part of the bottom constraints of the hemispherical steel shell deforms outward, but the overall deformation is small. When the explosive distance lower than 5m and the explosive equivalent lower than 200kg, the maximum effective stress of the hemispherical steel shell and the semi-cylindrical steel shell does not exceed the ultimate strength of Q690 steel.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Fantong Lin
AU  - Xianxiang Zhou
AU  - Lan Xiao
AU  - Chengfei Fan
AU  - Ziye Liu
AU  - Yifan Jia
PY  - 2025
DA  - 2025/07/03
TI  - Research on Dynamic Response of Shell Structure under Underwater Shock Wave Load
BT  - Proceedings of the 2025 International Conference on Engineering Management and Safety Engineering (EMSE 2025)
PB  - Atlantis Press
SP  - 4
EP  - 16
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-780-9_2
DO  - 10.2991/978-94-6463-780-9_2
ID  - Lin2025
ER  -