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Research Papers: Design and Analysis

Dynamic Analysis of Heterogeneous Pressure Vessels Subjected to Thermomechanical Loads

[+] Author and Article Information
R. Ansari

e-mail: r_ansari@guilan.ac.ir
Department of Mechanical Engineering,
University of Guilan,
P. O. Box 3756, Rasht, Iran

1Corresponding author.

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received September 26, 2010; final manuscript received March 13, 2012; published online October 18, 2012. Assoc. Editor: Spyros A. Karamanos.

J. Pressure Vessel Technol 134(6), 061202 (Oct 18, 2012) (10 pages) doi:10.1115/1.4007029 History: Received September 26, 2010; Revised March 13, 2012

The elastic analysis of two different kinds of radially heterogeneous pressure vessels is conducted in this paper. As a first kind of heterogeneous pressure vessels, a multilayered pipe with different material properties in different layers is considered. Another kind of heterogeneous pressure vessels is a thick hollow cylinder made of functionally graded material (FGM). On the basis of the finite difference method, the time-dependent deformation, strain and stress distributions of both kinds of heterogeneous pipes are obtained under the different kinds of thermomechanical loadings. In this investigation, it is assumed that the pressure and temperature are symmetrical about the axis of the cylinder. Also, the material properties are considered to be independent of temperature. Results obtained from the present method are compared with the existing data.

Copyright © 2012 by ASME
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Figures

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Fig. 1

Multilayered heterogeneous cylinder

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Fig. 2

Radial displacement, hoop, and radial stresses of the three-layered cylinder under the time-independent internal pressure

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Fig. 3

Radial displacement of the three-layered cylinder under the impulsive loading

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Fig. 4

Hoop stress distribution in the three-layered cylinder under the impulsive loading

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Fig. 5

Hoop strain of the three-layered cylinder subjected to the impulsive loading

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Fig. 6

Axial strain of the three-layered cylinder

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Fig. 7

Radial displacement, hoop, and radial stresses of the functionally graded cylinder under the time-independent internal pressure

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Fig. 8

Radial displacement of the functionally graded pressure vessel under the thermal loading

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Fig. 9

Distribution of hoop and axial stresses

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Fig. 10

Radial and axial strains of the functionally graded pressure vessel under the thermal loading

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Fig. 11

Radial displacement of the functionally graded pressure vessel under the mechanical loading

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Fig. 12

Distribution of radial and hoop stresses under the mechanical loading

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Fig. 13

Axial stress distribution under the mechanical loading

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Fig. 14

Hoop strain of the functionally graded pressure vessel

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Fig. 15

Radial and axial strains of the functionally graded pressure vessel under the mechanical loading

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Fig. 16

Temperature distribution

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Fig. 17

Axial stress under the both cyclic internal pressure and temperature loading

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Fig. 18

Hoop strain under the both cyclic internal pressure and temperature loading

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