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Non-linear soil modelling by correction of the hysteretic damping using a modified Iwan model together with Masing rules.

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Title: Non-linear soil modelling by correction of the hysteretic damping using a modified Iwan model together with Masing rules.
Authors: Chehat, Azeddine1,2 (AUTHOR), Harichane, Zamila1 (AUTHOR) z_harichane@yahoo.fr, Karray, Mourad3 (AUTHOR)
Source: International Journal of Geotechnical Engineering. Nov2019, Vol. 13 Issue 6, p581-593. 13p.
Abstract: Even at this time, there is no universal mathematical model that can adequately describe the actual behaviour of cyclically loaded soils but rather thoughtful attempts were made to describe the appropriate behaviour for a well-defined soil type. The overestimation of damping ratio at large strain can result when the hysteretic damping is calculated using the unloading–reloading stress–strain hysteresis loop obtained by the second Masing rules. In this paper, a method is proposed to overcome the encountered problem of overestimation of hysteretic damping by including a factor modulus to correct the hysteretic damping in order to have a good agreement between numerical and experimental results. By this method, the initial hyperbolic backbone curve is segmented by a series of linear elements and the Masing rules are associated with the Iwan model. For low shear strains (γ ≤ 3.10−2), a corrector factor λ1 (rather than the reduction factor) will be in the interval (1 ≤ λ1 ≤ 7) and in the interval (0.4 ≤ λ1 ≤ 1.0) for the other cases (γ > 3.10−2), in such way that the obtained results will be in good agreement with experimental ones. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Geotechnical Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: Non-linear soil modelling by correction of the hysteretic damping using a modified Iwan model together with Masing rules.
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  Data: <searchLink fieldCode="AR" term="%22Chehat%2C+Azeddine%22">Chehat, Azeddine</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Harichane%2C+Zamila%22">Harichane, Zamila</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> z_harichane@yahoo.fr</i><br /><searchLink fieldCode="AR" term="%22Karray%2C+Mourad%22">Karray, Mourad</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Geotechnical+Engineering%22">International Journal of Geotechnical Engineering</searchLink>. Nov2019, Vol. 13 Issue 6, p581-593. 13p.
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Even at this time, there is no universal mathematical model that can adequately describe the actual behaviour of cyclically loaded soils but rather thoughtful attempts were made to describe the appropriate behaviour for a well-defined soil type. The overestimation of damping ratio at large strain can result when the hysteretic damping is calculated using the unloading–reloading stress–strain hysteresis loop obtained by the second Masing rules. In this paper, a method is proposed to overcome the encountered problem of overestimation of hysteretic damping by including a factor modulus to correct the hysteretic damping in order to have a good agreement between numerical and experimental results. By this method, the initial hyperbolic backbone curve is segmented by a series of linear elements and the Masing rules are associated with the Iwan model. For low shear strains (γ ≤ 3.10−2), a corrector factor λ1 (rather than the reduction factor) will be in the interval (1 ≤ λ1 ≤ 7) and in the interval (0.4 ≤ λ1 ≤ 1.0) for the other cases (γ > 3.10−2), in such way that the obtained results will be in good agreement with experimental ones. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Geotechnical Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/19386362.2017.1376393
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      – Code: eng
        Text: English
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        PageCount: 13
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      – TitleFull: Non-linear soil modelling by correction of the hysteretic damping using a modified Iwan model together with Masing rules.
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            NameFull: Chehat, Azeddine
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            NameFull: Harichane, Zamila
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            NameFull: Karray, Mourad
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            – D: 01
              M: 11
              Text: Nov2019
              Type: published
              Y: 2019
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              Value: 13
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              Value: 6
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            – TitleFull: International Journal of Geotechnical Engineering
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