Effect of frictional heat dissipation on the loss of soil strength

Galindo-Torres, S. A., Lizcano, A. and Munoz, J. D. (2012) Effect of frictional heat dissipation on the loss of soil strength. Physical Review E, 86 5: 061302.1-061302.7. doi:10.1103/PhysRevE.86.061302

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Author Galindo-Torres, S. A.
Lizcano, A.
Munoz, J. D.
Total Author Count Override 3
Title Effect of frictional heat dissipation on the loss of soil strength
Journal name Physical Review E   Check publisher's open access policy
ISSN 1539-3755
1550-2376
Publication date 2012-12
Sub-type Article (original research)
DOI 10.1103/PhysRevE.86.061302
Open Access Status File (Publisher version)
Volume 86
Issue 5
Start page 061302.1
End page 061302.7
Total pages 7
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2013
Language eng
Abstract In the present paper through a shear test on a fully saturated granular medium, simulated by the discrete element method, the effect of the heat produced by friction on the internal pore water pressure is explored. It is found that the dissipated energy is enough to increase the pore pressure and reduce the soil strength. In adiabatic and impermeable conditions the heat builds up quickly inside the shear band, and the softening is more pronounced. It is found as well that for real geological materials, heat conduction is not enough to reduce the pore pressure, and the softening prevails. Nevertheless, it is observed that the hydraulic conduction may mitigate or completely eliminate the temperature growth inside the shear band. This result provides new understanding on the thermodynamic factors involved in the onset of catastrophic landslides.
Keyword Catastrophic Landslides
Element Method
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2013 Collection
 
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