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Specific Dissipated Energy as a Failure Predictor for Uniform Sands under Constant Volume Cyclic Simple Shear Loading

  • Geotechnical Engineering
  • Published:
KSCE Journal of Civil Engineering Aims and scope

Abstract

An experimental study was performed to investigate the dissipated energy to failure of sand samples subjected to uniform and non-uniform cyclic simple shear loading. The hypothesis evaluated was that for a given initial sample state the specific dissipated energy required to reach failure should be reasonably constant independent of the type of stress-time history used in the testing. Test samples consisted of dry Ottawa sand prepared at nine different initial states that were subjected to different stress controlled cyclic horizontal shear loading waveforms that included 15 uniform sinusoidal waves and up to 33 non-uniform loading wave forms. The experimental program presented showed that the measured cumulative dissipated specific energy to failure, defined when the double amplitude shear strain reaches 7.5%, for the different sample initial states was reasonably constant but with coefficients of variation ranging between 13 to 44%. As expected, the cumulative dissipated energy increased with increasing initial stress level and relative density. The findings support the notion that specific dissipated energy can be used as a reasonable failure predictor for uniform dry sands based on their initial state and are independent of the type of cyclic simple shear loading waveform using in the testing.

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Acknowledgments

The first author would like to thank the Pontificia Universidad Católica del Perú for the funding provided to spend a sabbatical year and two summer periods at UNC Charlotte as a visiting scholar where the bulk of the experimental tests were performed. This author also thanks the CEE department of UNC Charlotte and the second author for providing office space, and access to the testing and computing facilities during his visiting scholar periods.

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Correspondence to Guillermo J. Zavala.

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Zavala, G.J., Pando, M.A., Park, Y. et al. Specific Dissipated Energy as a Failure Predictor for Uniform Sands under Constant Volume Cyclic Simple Shear Loading. KSCE J Civ Eng 26, 703–714 (2022). https://doi.org/10.1007/s12205-021-1205-4

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  • DOI: https://doi.org/10.1007/s12205-021-1205-4

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