Research on Buckling Properties of Toroidal Pressure Hull with Elliptical Cross-section

doi:10.3901/JME.2022.05.144

Journal of Mechanical Engineering ›› 2022, Vol. 58 ›› Issue (5): 144-150.doi: 10.3901/JME.2022.05.144

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Research on Buckling Properties of Toroidal Pressure Hull with Elliptical Cross-section

WANG Xin¹, ZHANG Jian^1,2, DI Chen-yang¹, WANG Fang²

1. School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003;
2. Shanghai Engineering Research Center of Hadal Science and Technology, Shanghai Ocean University, Shanghai 201306

Received:2020-11-13 Revised:2021-12-05 Online:2022-03-05 Published:2022-04-28

Abstract

Abstract: The toroidal pressure hull is a kind of optimal structure for the deep-sea space station because of its good compressive strength and hydrodynamic characteristics. The buckling analysis on circular cross-section toroidal shells and ribbed circular cross-section toroidal shells are mainly conducted in existing studies, but experimental support on the study of elliptical cross-section toroidal shells is lacked. In order to further explore the buckling properties of the elliptical cross-section toroidal shells. Through the nonlinear numerical calculation based on the arc length method, the influence of the ratio of the long and short axis of the elliptical section on the buckling load of the toroidal pressure shell is analyzed, and a set of elliptic parameters is optimized. Two resin material elliptical section toroidal shells and two resin material circular cross-section toroidal shells of equal volume and equal mass are made by rapid prototyping technology for geometric measurement, hydrostatic external pressure test and numerical calculation. The results show that the elliptical cross-section pressure shell with the ratio of long and short axis of 1.27 has good compressive performance,and its buckling is 1.718 times that of the equivalent circular cross-section toroidal pressure hull. This study can provide a reference for the innovative design of the manned cabin of the underwater space station.

Key words: toroidal pressure hull, elliptical cross-section, circular cross-section, buckling load, deep sea space station

CLC Number:

U661

WANG Xin, ZHANG Jian, DI Chen-yang, WANG Fang. Research on Buckling Properties of Toroidal Pressure Hull with Elliptical Cross-section[J]. Journal of Mechanical Engineering, 2022, 58(5): 144-150.

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Research on Buckling Properties of Toroidal Pressure Hull with Elliptical Cross-section

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