0
TECHNICAL PAPERS

Parametric Equations Using Generic Representation of Joint Stiffness

[+] Author and Article Information
A. Nazari, Z. Guan, H. Gurgenci

School of Engineering, and CRCMining, The University of Queensland, Brisbane, Australia

W. J. T Daniel

School of Enginerring, The University of Queensland, Brisbane, Australia

J. Offshore Mech. Arct. Eng 129(2), 131-137 (Oct 05, 2006) (7 pages) doi:10.1115/1.2426998 History: Received April 03, 2006; Revised October 05, 2006

For most design and recertification work on tubular structures, it is not practical to determine the joint hot spot stresses experimentally or using detailed finite element analysis. Therefore, parametric equations were developed in the past for various joint geometries to relate stress concentration factors around the joints to basic joint geometrical parameters. Such parametric equations have limited applications to reinforced joints because the nature of reinforcement varies and may be difficult to represent by a generic set of geometric parameters. In this paper, a new method is introduced to include local joint stiffness in the parametric equations represented by a generic characteristic of the joint determined by modal analysis. The parametric equations produced in this paper can be applied to any reinforced T-joint regardless of the nature of reinforcement. This is especially useful in those cases where the exact nature of reinforcement is not known, for example, hidden in the interior or deteriorated through age or fabrication error. The dimensionless joint stiffness parameter can be calculated by a simple modal test and a beam model without needing to know the nature and details of the reinforcement.

FIGURES IN THIS ARTICLE
<>
Copyright © 2007 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

The partially rigid joint model

Grahic Jump Location
Figure 2

A sketch of doubler plat connection in T-joints

Grahic Jump Location
Figure 3

Finite-element model with shell element for a T-joint with a doubler plate

Grahic Jump Location
Figure 4

The model of an unreinforced T-joint using beam elements

Grahic Jump Location
Figure 5

Peak stress concentration factor (SCF) for T-joints under axial loading (PE—parametric equations and FE—FEA results compared against past studies)

Grahic Jump Location
Figure 6

Peak stress concentration factor (SCF) for T-joints under IPB loading (PE—parametric equations and FE—FEA results compared against past studies)

Grahic Jump Location
Figure 7

Peak stress concentration factor (SCF) for T-joints under OPB loading (PE—parametric equations and FE—FEA results compared against past studies)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In