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The Continuous Strength Method of Cold-formed Stainless Steel Equal-leg Angle Section Stubs

Received: 20 August 2019     Published: 18 November 2019
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Abstract

Structural stainless steel requires appropriate recognition of its beneficial properties such as material nonlinearity and significant strain hardening. The recently proposed Continuous Strength Method (CSM) exploits those benefits through a strain based approach for both stocky and slender cross-sections, and is shown to yield a higher level of accuracy and consistency, as well as design efficiency, in the capacity predictions of stainless steel cross-sections. Although there have been extensive and comprehensive studies on SHS, RHS, round tubes and H-sections stubs, but research into cold-formed stainless steel equal-leg angle section stubs remains scarce. In this paper, the scope of the CSM is extended to cover the design of cold-formed stainless steel equal-leg angle section stubs. Developed FE models included material nonlinearities as well as initial geometric imperfections. A comprehensive parametric study has been carried out covering a wide range of slenderness with different cross section geometries for the considered angle stubs. Cross-section resistances obtained from the numerical study were used to assess the performance of the current Continuous Strength Method (DSM) guidelines and EC3 when applied for stainless steel equal-leg angle section stubs; obtained comparisons showed considerable conservatism. A modified design method for cold-formed stainless steel equal-leg angle section stubs is proposed herein following CSM techniques, which provides considerably more accurate predictions for the considered cold-formed stubs. Reliability of the proposed design equations is also presented showing a good agreement with both experimentally and numerically obtained results.

Published in Science Discovery (Volume 7, Issue 5)
DOI 10.11648/j.sd.20190705.21
Page(s) 323-329
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Stainless Steel, Cold-formed, Equal-leg Angle, The Continuous Strength Method, Cross Section Strength

References
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[2] AS/NZS 4673, Cold-formed stainless steel structures [Z], in, Standards Australia,Sydney, 2001.
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[4] CECS 410, Technical specification for stainless steel structures [Z], in, China plan press, Beijing, 2015.
[5] L. Gardner, D.A. Nethercot, Experiments on stainless steel hollow sections—Part 1: material and cross-sectional behaviour [J], J. Constr. Steel Res. 60 (2004) 1291–1318.
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[9] L. Gardner, The continuous strength method [C], Proc. ICE - Struct. Build. 161 (2008) 127–133.
[10] S. Afshan, L. Gardner, The continuous strength method for structural stainless steel design [J], Thin-Walled Struct. 68 (2013) 42–49.
[11] S. Ahmed, M. Ashraf, The Continuous Strength Method for slender stainless steel cross-sections [J], Thin-Walled Struct. 107 (2016) 362–376.
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Cite This Article
  • APA Style

    Jing Yang, Zhoupeng Cai, Hongdong Ran. (2019). The Continuous Strength Method of Cold-formed Stainless Steel Equal-leg Angle Section Stubs. Science Discovery, 7(5), 323-329. https://doi.org/10.11648/j.sd.20190705.21

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    ACS Style

    Jing Yang; Zhoupeng Cai; Hongdong Ran. The Continuous Strength Method of Cold-formed Stainless Steel Equal-leg Angle Section Stubs. Sci. Discov. 2019, 7(5), 323-329. doi: 10.11648/j.sd.20190705.21

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    AMA Style

    Jing Yang, Zhoupeng Cai, Hongdong Ran. The Continuous Strength Method of Cold-formed Stainless Steel Equal-leg Angle Section Stubs. Sci Discov. 2019;7(5):323-329. doi: 10.11648/j.sd.20190705.21

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  • @article{10.11648/j.sd.20190705.21,
      author = {Jing Yang and Zhoupeng Cai and Hongdong Ran},
      title = {The Continuous Strength Method of Cold-formed Stainless Steel Equal-leg Angle Section Stubs},
      journal = {Science Discovery},
      volume = {7},
      number = {5},
      pages = {323-329},
      doi = {10.11648/j.sd.20190705.21},
      url = {https://doi.org/10.11648/j.sd.20190705.21},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20190705.21},
      abstract = {Structural stainless steel requires appropriate recognition of its beneficial properties such as material nonlinearity and significant strain hardening. The recently proposed Continuous Strength Method (CSM) exploits those benefits through a strain based approach for both stocky and slender cross-sections, and is shown to yield a higher level of accuracy and consistency, as well as design efficiency, in the capacity predictions of stainless steel cross-sections. Although there have been extensive and comprehensive studies on SHS, RHS, round tubes and H-sections stubs, but research into cold-formed stainless steel equal-leg angle section stubs remains scarce. In this paper, the scope of the CSM is extended to cover the design of cold-formed stainless steel equal-leg angle section stubs. Developed FE models included material nonlinearities as well as initial geometric imperfections. A comprehensive parametric study has been carried out covering a wide range of slenderness with different cross section geometries for the considered angle stubs. Cross-section resistances obtained from the numerical study were used to assess the performance of the current Continuous Strength Method (DSM) guidelines and EC3 when applied for stainless steel equal-leg angle section stubs; obtained comparisons showed considerable conservatism. A modified design method for cold-formed stainless steel equal-leg angle section stubs is proposed herein following CSM techniques, which provides considerably more accurate predictions for the considered cold-formed stubs. Reliability of the proposed design equations is also presented showing a good agreement with both experimentally and numerically obtained results.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - The Continuous Strength Method of Cold-formed Stainless Steel Equal-leg Angle Section Stubs
    AU  - Jing Yang
    AU  - Zhoupeng Cai
    AU  - Hongdong Ran
    Y1  - 2019/11/18
    PY  - 2019
    N1  - https://doi.org/10.11648/j.sd.20190705.21
    DO  - 10.11648/j.sd.20190705.21
    T2  - Science Discovery
    JF  - Science Discovery
    JO  - Science Discovery
    SP  - 323
    EP  - 329
    PB  - Science Publishing Group
    SN  - 2331-0650
    UR  - https://doi.org/10.11648/j.sd.20190705.21
    AB  - Structural stainless steel requires appropriate recognition of its beneficial properties such as material nonlinearity and significant strain hardening. The recently proposed Continuous Strength Method (CSM) exploits those benefits through a strain based approach for both stocky and slender cross-sections, and is shown to yield a higher level of accuracy and consistency, as well as design efficiency, in the capacity predictions of stainless steel cross-sections. Although there have been extensive and comprehensive studies on SHS, RHS, round tubes and H-sections stubs, but research into cold-formed stainless steel equal-leg angle section stubs remains scarce. In this paper, the scope of the CSM is extended to cover the design of cold-formed stainless steel equal-leg angle section stubs. Developed FE models included material nonlinearities as well as initial geometric imperfections. A comprehensive parametric study has been carried out covering a wide range of slenderness with different cross section geometries for the considered angle stubs. Cross-section resistances obtained from the numerical study were used to assess the performance of the current Continuous Strength Method (DSM) guidelines and EC3 when applied for stainless steel equal-leg angle section stubs; obtained comparisons showed considerable conservatism. A modified design method for cold-formed stainless steel equal-leg angle section stubs is proposed herein following CSM techniques, which provides considerably more accurate predictions for the considered cold-formed stubs. Reliability of the proposed design equations is also presented showing a good agreement with both experimentally and numerically obtained results.
    VL  - 7
    IS  - 5
    ER  - 

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Author Information
  • Xi’an Pengcheng Blasting Engineering Co. Ltd, Xi’an, China

  • School of Civil Engineering, University of Archetechtrue and Technology, Xi’an, China

  • School of Civil Engineering, University of Archetechtrue and Technology, Xi’an, China

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