Intensity Design and Analysis of the Underwater Instrument Cabin Shell

Abstract:

This paper presents intensity calculation of the cylinder block of the underwater instrument cabin which has outer diameter of 220mm, thickness of 7.5mm, and length of 1660mm. With simplifying force of the cylinder block to the problem of elastic plane stress, its’ internal stress is calculated under internal pressure and external pressure, in the case of the simulation tests and working state. Calculations and simulation indicate that: its’ maximum internal stress exceeds the elastic yield limit at 30MPa, and the cylinder block cannot work in 3000 meters underwater. At the same time, it proves that the maximum internal stress first starts from the inwall of the cylinder block with the method of using internal pressurization test, which is consistent with the working state, but because the maximum internal stress in the test state is less than the maximum internal stress in the working state, the test method may misjudge. Finally, through calculation, it is specified that the theoretical work water depth of the cylinder block is 1300 m and the axial deformation is about 0.5 mm, radial deformation is about 0.1mm, which provides reference for the seal design.

• Periodical: Advanced Materials Research (Volumes 945-949)
• Pages: 1242-1249
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.945-949.1242
• Online since: June 2014
• Authors: Yuan Sheng Wang, Gui Ying Lu, Chao Xin Zhou, Juan Yu*
• Keywords: Elastic Deformation, Instrument Cabin, Intensity, Plastic Limit Analysis

References

[1] Chunlei Jing. Analysis on the Regional Geological Background and Ore-controlling Factors of Submarine Hydrothermal Sulfide. Qingdao: The First Institute of Oceanography, SOA, 2012. 6. In Chinese.

[2] Sheng Zhou, Zhenzhu Xi, Gang Song, Bo Li, et al. Responses of the towed transient electromagnetic sounding on deep seafloor. Journal of Central South University: 2012, 43(2): 605-610. In Chinese.

[3] Xiaohong Yang, Jishan He, Xiaozhong Tong. Numerical simulation of frequency-domain IP with FEM. Progress in Geophysics: 2008, 23(4): 1186-1189. In Chinese.

[4] Yanjiang Yu, Zhigang Zhang, Xing Xu, Xianhu Luo. Design of the Compressive Instrument Cabin Used in Deep Sea. Ocean Technology: 2010, 29(2): 33-36. In Chinese.

[5] Yulei Liao, Yongjie Pang, Tiedong Zhang. Structure Design of Submersible Pressure Hull. 14th China National Offshore (offshore) Engineering Symposium Proceedings: 2009, pp: 287-294. In Chinese.

[6] Zhonghua Huang, Bo Jin, Shaojun Liu. Sealing performance evaluation of deepsea high pressure cabin. Journal of Zhejiang University (Engineering Science): 2007, 41(5): 790-793. In Chinese.

[7] Ming Deng, Qisheng Zhang, Kailin Qiu, Linlin Wang. Technique Problems in Marine Geoelectrical Field Prospecting. Instrument Technique and Sensor: 2004, 9: 48-50. In Chinese.

[8] Jianqing Zhang, Zhao Zhang, Jianming Wang, Chunan Cao. Analysis and Application of Electrochemical Noose I. Theory of Electrochemical Noise Analysis. Journal of Chinese Society for Corrosion and Protection: 2001, 21(5): 310-320. In Chinese.

[9] Huili Hu, Ning LI, Jinning Cheng. A Review on Progress of Application of Electrochemical Noise in Corrosion Study. Corrosion Science and Protection Technology: 2007, 19(2): 114-118. In Chinese.

[10] Guitong Yang. Introduction to Elasticity and Plasticity. Beijing: Tsinghua University Press, 2004. In Chinese.

[11] Bingye Xu. Concise Elasticity and Plasticity. Beijing: Higher Education Press, 2011, 85-96. In Chinese.

[12] Albert C.J. Luo. Nonlinear Deformable-body Dynamics. Beijing: Higher Education Press. (2010).