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Research Papers: Design and Analysis

Experimental Study of Integrated Multilayer Clamping High Pressure Vessel

[+] Author and Article Information
Zhen Liang, Jiang Nan, Liu Sijia

 School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, P. R. C

J. Pressure Vessel Technol 133(6), 061206 (Oct 20, 2011) (6 pages) doi:10.1115/1.4004568 History: Received May 26, 2010; Accepted April 06, 2011; Published October 20, 2011; Online October 20, 2011

The hydrostatic test of integrated multilayer clamping high pressure vessel is performed from 15.7 MPa to 56.52 MPa (1.8 times of the design pressure). The measured stress values have deviation from the Lamè equation (maximum error 34%). The inner wall stress is low while the outer wall stress is high. The layered vessel mechanics model is deduced to analyze the deviation. The inner shell is an external pressure vessel and the outer shell is the internal pressure vessel. The contact of the inner shell and the outer shell generates preload stress. The multilayer structure parameter is a universal nondimensional parameter to calculate the preload stress of layered vessel, and the corrected theory values have smaller error in high pressure (less than 10%). The super hydrostatic test alters the preload stress distribution and the gaps between layers.

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Copyright © 2011 by American Society of Mechanical Engineers
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Figures

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Figure 2

Dimension and test point arrangement

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Figure 4

Relationship between the pressure and the circumference stress of the outer wall, (a) test points: 6 and 7 and (b) test points: 8, 9, and 10

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Figure 5

Sketch of the inner shell and the layer

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Figure 6

Mechanics model of the cylinder

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Figure 7

Relationship between the multilayer structure parameter and the number of the layers, (a) 300 mm internal shell and (b) 400 mm internal shell

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Figure 8

Relationship between the pressure and the circumference stress of the inner wall, (a) test points: 2 and 3 and (b) test points: 1, 4, and 5

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Figure 9

Relationship between the pressure and the circumference stress of the outer wall, (a) test points: 6 and 7 and (b) test points: 8, 9, and 10

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Figure 3

Relationship between the pressure and the circumference stress of the inner wall, (a) test points: 2 and 3 and (b) test points: 1, 4, and 5

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Figure 1

Test pressure vessel

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