Free bulging and nonlinear buckling of teardrop-shaped pressure hull

IF 2.3 3区工程技术 Q2 ENGINEERING, MARINE International Journal of Naval Architecture and Ocean Engineering Pub Date : 2024-01-01 DOI:10.1016/j.ijnaoe.2024.100626

Jian Zhang , Xiaode Ding , Ming Zhan , Xinhu Zhang

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引用次数: 0

Abstract

This study applied free bulging to fabricate a teardrop-shaped pressure hull and analyzed the nonlinear buckling behavior of this hull. A preform made from stainless steel plates was fabricated, involving blanking, bending, and welding. Then, a teardrop-shaped pressure hull was formed through free bulging. Seven conical segments were installed inside the pressure hull. The segments near the poles had a nominal thickness of 0.851 mm, and the two middle segments of the preform had a nominal thickness of 1.084 mm. Theoretical and experimental analyses were conducted to determine the equivalent stress and yield load of the teardrop-shaped hull and preform. Subsequently, the buckling behavior of the fabricated hull was investigated. Finally, a nonlinear finite element method was used to analyze the bulging and buckling of the teardrop-shaped pressure hull. The findings indicate that free bulging contributes to promisingly manufacturing teardrop-shaped pressure hulls for underwater observatories and other related equipment.

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来源期刊

International Journal of Naval Architecture and Ocean Engineering ENGINEERING, MARINE-

CiteScore

4.90

自引率

4.50%

发文量

审稿时长

12 months

期刊介绍： International Journal of Naval Architecture and Ocean Engineering provides a forum for engineers and scientists from a wide range of disciplines to present and discuss various phenomena in the utilization and preservation of ocean environment. Without being limited by the traditional categorization, it is encouraged to present advanced technology development and scientific research, as long as they are aimed for more and better human engagement with ocean environment. Topics include, but not limited to: marine hydrodynamics; structural mechanics; marine propulsion system; design methodology & practice; production technology; system dynamics & control; marine equipment technology; materials science; underwater acoustics; ocean remote sensing; and information technology related to ship and marine systems; ocean energy systems; marine environmental engineering; maritime safety engineering; polar & arctic engineering; coastal & port engineering; subsea engineering; and specialized watercraft engineering.