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<title>UTas ePrints - Thin circular hollow section-to-plate T-joints: stress concentration factors and fatigue failure under in-plane bending</title>
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<meta content="Mashiri, F.R" name="eprints.creators_name" />
<meta content="Zhao, X.L." name="eprints.creators_name" />
<meta content="Fidelis.Mashiri@utas.edu.au" name="eprints.creators_id" />
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<meta content="2007-12-04 04:28:34" name="eprints.datestamp" />
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<meta content="Thin circular hollow section-to-plate T-joints: stress concentration factors and fatigue failure under in-plane bending" name="eprints.title" />
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<meta content="Fatigue; Circular hollow section; Hot spots; Stress concentration factor; Failure
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<meta content="Welded thin-walled (t<4mm) tube-to-plate T-joints made up of cold-formed circular hollow sections welded onto a
plate to form a moment resistant connection are used in the road transport and agricultural industry to manufacture
equipment and other structural systems. Fatigue design of these joints is not available in current standards. An
understanding of the stress concentrations and failure in these connections is therefore necessary as a step towards
understanding the fatigue behaviour of these connections. Stress concentration factors (SCFs) of welded thin-walled
(t<4mm) circular hollow section (CHS)-to-plate T-joints are determined at different locations along the weld toes on the
tubular brace. The distribution of SCFs along the weld toes shows that the highest SCF occurs at the weld toes in the
circular brace at the 0o line. The ratio of the end of test fatigue life (N4) to the through thickness fatigue life (N3) in the thin CHS-Plate T-joints is found to fall within the range of N4/N3 found in previous research of both thick and thin-walled joints. Surface crack growth monitoring is used to obtain an approximation of the length of surface crack at the point of occurrence of a through thickness crack. The relationship between surface crack length and the occurrence of a through thickness crack is important in that it can be used as a measure of the criticality of a surface crack during structural health monitoring of equipment or structures." name="eprints.abstract" />
<meta content="2006" name="eprints.date" />
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<meta content="Thin-Walled Structures" name="eprints.publication" />
<meta content="44" name="eprints.volume" />
<meta content="2" name="eprints.number" />
<meta content="159-169" name="eprints.pagerange" />
<meta content="10.1016/j.tws.2006.02.003" name="eprints.id_number" />
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<meta content="1. SAA 1998: Steel Structures, Australian Standard AS 4100-1998, Standards Association of Australia, Sydney,
Australia.2. AWS 1998, Structural Welding Code-Steel, ANSI/AWS D1.1-98, American Welding Society, Miami, USA.
3. EC3 2003: Eurocode 3: Design of Steel Structures-Part 1.1: General Rules and Rules for Buildings, prEN 1993-1-
1:2003, November 2003, European Committee for Standardization, Brussels, Belgium.
4. Zhao X.L., Herion S., Packer J.A., Puthli R., Sedlacek G., Wardenier J., Weynand K., van Wingerde A., and
Yeomans N. 2000, “Design Guide for Circular and Rectangular Hollow Section Joints under Fatigue Loading”,
Verlag TÜV Rheinland, Köln, Germany.
5. Hobbacher A. 1996, “Fatigue design of welded joints and components”, Recommendations of IIW Joint Working
Group XIII-XV, XIII-1539-96/XV-845-96, Abington Publishing, Cambridge, England
6. IIW 2000: Fatigue Design Procedures for Welded Hollow Section Joints, IIW Doc. XIII-1804-99, IIW Doc. XV-
1035-99, Recommendations for IIW Subcommission XV-E, Edited by X.L. Zhao and J.A. Packer, Abington
Publishing, Cambridge, UK.
7. CSA.2001: Stee Structures for Buildings (Limit State Design), CAN/CSA-S16.1-01, Canadian Standards
Association, Toronto, Ontario, Canada.
8. Packer J.A. and Henderson J.E.1997, “Hollow Structural Section Connections and Trusses-A Design Guide”, 2nd
Edition, Canadian Institute of Steel Construction, Ontario, Canada.
9. SAA 1991: Structural Steel Hollow Sections, Australian Standard AS1163-1991, Standards Association of
Australia, Sydney, Australia
10. Mashiri F.R., Zhao X.L., Grundy P. and Tong L. 2002a, “Fatigue Design of Very Thin-Walled SHS-to-plate Joints
under In-Plane Bending”, Thin-Walled Structures, Vol. 40, Issue. 2, Elsevier Science Ltd, February 2002, pp. 125-
151
Mashiri and Zhao: Thin-Walled Structures Manuscript
14
11. Mashiri F.R., Zhao X.L. and Grundy P. 2002b, “Fatigue Tests and Design of Thin Cold-Formed Square Hollow
Section-to-Plate T-Connections under In-Plane Bending” Journal of Structural Engineering, ASCE, Vol. 128, No.
1, January 2002, pp. 22-31
12. van Wingerde A.M. 1992: The fatigue behaviour of T- and X-joints made of SHS, Heron, Vol. 37, No. 2, pp. 1-
180
13. Romeijn A. 1994: Stress and strain concentration factors of welded multiplanar tubular joints, PhD Thesis, Delft
University Press, Delft, The Netherlands.
14. Romeyn A., Puthli R.S., de Koning C.H.M. and Wardenier J. 1992: Stress and strain concentration factors of
multiplanar joints made of circular hollow sections, Proceedings of the Second International Offshore and Polar
Engineering Conference, San Francisco, USA, 14-19 June 1992, Vol. IV, pp. 384-393
15. van Wingerde A.M., Puthli R.S., Wardenier J., Dutta D. and Packer J.A. 1992: Design recommendations and
commentary regarding the fatigue behaviour of hollow section joints”, Proceeding os the Second International
Offshore and Polar Engineering Conference, San Francisco, USA, 14-19 June 1992, Vol. IV, pp. 288-295
16. API 1991, “Recommended practice for planning, designing and constructing fixed offshore platforms”, American
Petroleum Institute (API) Recommended Practice 2A (RP 2A), Nineteenth Edition, August 1991, Washington,
USA
17. Hertogs A.A., Puthli R.S. and Wardenier J. 1989, “Stress concentration factors in plate-tube connections”,
Proceedings, 8th International Conference on Offshore and Arctic Engineering, The Hague, March 19-23, 1989, pp.
719-727
18. Mashiri F.R., Zhao X.L. and Grundy P. 2004a, “Stress Concentration Factors and Fatigue Behaviour of Welded
Thin-Walled CHS-SHS T-Joints under In-Plane Bending”, Engineering Structures, Vol 26, No. 13, Elsevier
Science Ltd, 2004, pp. 1861-1875
19. Chang E. and Dover W.D. 1999, “Prediction of stress distributions along the intersection of tubular Y and TMashiri
and Zhao: Thin-Walled Structures Manuscript
15
joints”, International Journal of Fatigue, Vol. 21, pp. 361-381
20. Efthymiou M. and Durkin S. 1985, “Stress Concentration Factors in T/Y and Gap/Overlap K-Joints”, Behaviour of
Offshore Structures, Proceedings of the 4th International Conference, Delft, The Netherlands, Elsevier Science
Publishers B.V. (Development in Marine Technology V. 2), Amsterdam, pp. 429-440.
21. Mashiri F.R. and Zhao X.L. 2005, “Effect of Thickness and Joint Type on Fatigue Performance of Welded Thin-
Walled Tube-Plate T-Joints”, Proceedings of The 1st International Conference on Advances in Experimental
Structural Engineering (AESE 2005), Editors: Usami T. and Nakashima M. 19-21 July 2005, Nagoya, Japan
(Under Review)
22. Mashiri F.R. and Zhao X.L. 2004c, “Fatigue Crack Initiation and Propagation in Welded Thin CHS-Plate T-joints
under In-Plane Bending”, Developments in Mechanics of Structures and Materials, Vol. 2, Proceedings of The
18th Australasian Conference on the Mechanics of Structures and Materials (ACMSM 18), Perth, Australia,
Editor: Deeks A. and Hao H., 1-3 December 2004, pp. 1141-1146
23. van Wingerde A.M., van Delft D.R.V., Wardenier J. & Packer J.P., 1997: Scale Effects on the Fatigue Behaviour
of Tubular Structures. IIW International Conference on Performance of Dynamically Loaded Welded Structures,
July 14-15, San Francisco, U.S.A, pp. 123-135
24. Mashiri F.R., Zhao X.L. and Grundy P. 2004b, “Stress Concentration Factors and Fatigue Failure of Welded TConnections
in Circular Hollow Sections under In-Plane Bending”, International Journal of Structural Stability
and Dynamics, World Scientific, September 2004, Vol 4, No. 3, pp. 403-422
Mashiri and Zhao: Thin-Walled Structures Manuscript
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<meta content="Welded thin-walled (t<4mm) tube-to-plate T-joints made up of cold-formed circular hollow sections welded onto a
plate to form a moment resistant connection are used in the road transport and agricultural industry to manufacture
equipment and other structural systems. Fatigue design of these joints is not available in current standards. An
understanding of the stress concentrations and failure in these connections is therefore necessary as a step towards
understanding the fatigue behaviour of these connections. Stress concentration factors (SCFs) of welded thin-walled
(t<4mm) circular hollow section (CHS)-to-plate T-joints are determined at different locations along the weld toes on the
tubular brace. The distribution of SCFs along the weld toes shows that the highest SCF occurs at the weld toes in the
circular brace at the 0o line. The ratio of the end of test fatigue life (N4) to the through thickness fatigue life (N3) in the thin CHS-Plate T-joints is found to fall within the range of N4/N3 found in previous research of both thick and thin-walled joints. Surface crack growth monitoring is used to obtain an approximation of the length of surface crack at the point of occurrence of a through thickness crack. The relationship between surface crack length and the occurrence of a through thickness crack is important in that it can be used as a measure of the criticality of a surface crack during structural health monitoring of equipment or structures." name="DC.description" />
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<h1 class="ep_tm_pagetitle">Thin circular hollow section-to-plate T-joints: stress concentration factors and fatigue failure under in-plane bending</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Mashiri, F.R</span> and <span class="person_name">Zhao, X.L.</span> (2006) <xhtml:em>Thin circular hollow section-to-plate T-joints: stress concentration factors and fatigue failure under in-plane bending.</xhtml:em> Thin-Walled Structures, 44 (2). pp. 159-169. ISSN 0263-8231</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2604/1/MashiriZhao_SCF_CHS-Plate_TWS_44-2_2006.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2604/1/MashiriZhao_SCF_CHS-Plate_TWS_44-2_2006.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />260Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="3412" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1016/j.tws.2006.02.003">http://dx.doi.org/10.1016/j.tws.2006.02.003</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Welded thin-walled (t<4mm) tube-to-plate T-joints made up of cold-formed circular hollow sections welded onto a
plate to form a moment resistant connection are used in the road transport and agricultural industry to manufacture
equipment and other structural systems. Fatigue design of these joints is not available in current standards. An
understanding of the stress concentrations and failure in these connections is therefore necessary as a step towards
understanding the fatigue behaviour of these connections. Stress concentration factors (SCFs) of welded thin-walled
(t<4mm) circular hollow section (CHS)-to-plate T-joints are determined at different locations along the weld toes on the
tubular brace. The distribution of SCFs along the weld toes shows that the highest SCF occurs at the weld toes in the
circular brace at the 0o line. The ratio of the end of test fatigue life (N4) to the through thickness fatigue life (N3) in the thin CHS-Plate T-joints is found to fall within the range of N4/N3 found in previous research of both thick and thin-walled joints. Surface crack growth monitoring is used to obtain an approximation of the length of surface crack at the point of occurrence of a through thickness crack. The relationship between surface crack length and the occurrence of a through thickness crack is important in that it can be used as a measure of the criticality of a surface crack during structural health monitoring of equipment or structures.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">The definitive version is available at http://www.sciencedirect.com
</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Fatigue; Circular hollow section; Hot spots; Stress concentration factor; Failure
</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/290801.html">290000 Engineering and Technology > 290800 Civil Engineering > 290801 Structural Engineering</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2604</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Fidelis R. Mashiri</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">04 Dec 2007 15:28</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2604;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2604">item control page</a></p>
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