Research Papers: Design and Analysis

Burst Pressure Determination of Vehicle Toroidal Oval Cross-Section LPG Fuel Tanks

[+] Author and Article Information
Yasin Kisioglu

Department of Mechanical Education, Kocaeli University, Umuttepe, Kocaeli 41380, Turkeyykisioglu@kocaeli.edu.tr

J. Pressure Vessel Technol 133(3), 031202 (Mar 30, 2011) (5 pages) doi:10.1115/1.4002863 History: Received July 26, 2010; Revised October 15, 2010; Published March 30, 2011; Online March 30, 2011

This study addresses the prediction of the burst pressures and burst failure locations of the vehicle toroidal liquefied petroleum gas (LPG) fuel tanks using both experimental and finite element analysis (FEA) approaches. The experimental burst test investigations were carried out hydrostatically in which the cylinders were internally pressurized with water. The FEA modeling processes of these LPG fuel tanks subjected to incremental internal uniform pressure were performed in the nonlinear field. Two different types of nonlinear models, plane and shell, were developed and evaluated under nonuniform and axisysmmetric boundary conditions. The required actual shell properties including weld zone and shell thickness variations were also investigated and used in the computerized modeling processes. Therefore, the results of the burst pressures and their failure locations were predicted and compared with experimental ones.

Copyright © 2011 by American Society of Mechanical Engineers
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Figure 1

Toroidal oval cross-section LPG Fuel tank and its components

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Figure 2

Design of the toroidal oval cross-section LPG fuel tank and its design parameters

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Figure 3

(a) The experimental setup and equipments and (b) a burst toroidal LPG tank

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Figure 4

The BP results of toroidal oval cross-sectional LPG fuel tanks

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Figure 5

Orientations of tensile test specimens and their true stress-strain curves

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Figure 6

Thickness variation of the toroidal LPG fuel tanks

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Figure 9

Max deflections (burst deflection) of the LPG tanks

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Figure 10

Nodal deflection of selected nodes of the LPG tanks

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Figure 11

The maximum equivalent stress of the toroidal LPG tanks: (a) plane and (b) shell models

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Figure 12

The maximum nonlinear equivalent plastic strain of the toroidal LPG tanks

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Figure 8

The axisymmetric boundary and loading conditions

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Figure 7

Nonuniform nonhomogeneous axisymmetric FEA: (a) plane and (b) shell models




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