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Research Papers: Design and Analysis

Stress Analysis of Composite Pipe Joints Under Combined Torsional and Tensile Loading

[+] Author and Article Information
Chihdar Yang

Department of Aerospace Engineering, Wichita State University, Wichita, KS 67260-0044

Zhidong Guan

Department of Aircraft Design, School of Aeronautic Science and Engineering, Beihang University, Beijing 100083, China

J. Pressure Vessel Technol 131(5), 051210 (Sep 03, 2009) (6 pages) doi:10.1115/1.3151810 History: Received March 10, 2008; Revised November 25, 2008; Published September 03, 2009

An analytical model was developed using the first-order laminated shell theory to determine stress and strain distributions within a composite pipe joint under combined torsional and tensile loading. Due to the axisymmetric nature of torsional and tensile loads about the pipe’s central axis, a one-dimensional model was sufficient to simulate the system response. In this developed model, a three-component joint system consisting of coupling, adhesive, and pipe was used to model different types of composite pipe joints, such as adhesive-bonded socket joints, butt-and-strap joints, and heat-activated coupling joints. Good correlations were found when comparing results from both the developed model and the finite element model, including adhesive peel stress and shear stress distributions.

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Copyright © 2009 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Adhesive-bonded socket joint

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Figure 2

Butt-and-strap joint

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Figure 3

Heat-activated coupling joint

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Figure 5

Dimensions and coordinate system

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Figure 6

Modeled regions of joint system

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Figure 7

Free body diagram and sign conventions (segment of coupling in joint region)

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Figure 8

Adhesive peel stress distribution

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Figure 9

Adhesive shear stress distribution in axial direction

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Figure 10

Adhesive shear stress distribution in hoop direction

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Figure 11

Adhesive stress singularity in the joint

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