Small Strain Dynamic Characteristics for Soils

Abstract:

Based on modern ideas of thermomechanics, small strain dynamic dissipation function of Hardin-Drnevich model for soils is formulated using the assumptions of the beeline and the skeleton curve shift laws. The first and the second threshold shear strain are proposed. Both the two threshold shear strains do depend significantly on the dynamic parameters for soils. Comparison between the results of eight kinds of cohesionless soils, it is shown that the two threshold shear strains decrease when the maximum dynamic shear modulus coefficient and exponent increase. The first threshold shear strain basically does not change with the change of internal friction angle. However, for the second threshold strain, a monotonically increasing function and monotonically decreasing function can be used to model the change with respect to the internal friction angle for the beeline and the skeleton shift stress respectively.

• Periodical: Applied Mechanics and Materials (Volumes 90-93)
• Pages: 438-441
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.90-93.438
• Online since: September 2011
• Authors: Xiao Xia Guo, Ri Sheng Sun
• Keywords: Dissipation Function, Dynamic Characteristic, Internal Friction Angle, Maximum Dynamic Shear Modulus

References

[1] G. Lanzo, M. Vucetic and M. Doroudian. Reduction of shear modulus at small strains in simple shear. Journal of Geotechnical and Geoenvironmental Engineering, Vol. 123(1997), P. 1035

DOI: 10.1061/(asce)1090-0241(1997)123:11(1035)

[2] M. Vucetic, G. Lanzo, and M. Doroudian. Effect of the cyclic loading on damping ratio at small strains. Soils and Foundations, Vol. 38(1998), P. 111

DOI: 10.3208/sandf.38.111

[3] C.C. Hsu and M. Vucetic. Volume threshold shear strain for cyclic settlement. Journal of Geotechanical and Geoenvironmental Engineering, Vol. 130(2004), P. 58

DOI: 10.1061/(asce)1090-0241(2004)130:1(58)

[4] C.C. Hsu and M. Vucetic. Threshold Shear Strain for Cyclic Pore-Water Pressure in Cohesive Soils. Journal of Geotechnical and Geoenvironmental Engineering, Vol. 132(2006), P. 1325

DOI: 10.1061/(asce)1090-0241(2006)132:10(1325)

[5] I.F. Collins and T. Hilder. A theoretical framework for constructing elastic/plastic constitutive models of triaxial tests. International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 26(2002), P. 1313

DOI: 10.1002/nag.247

[6] I.F. Collins. A systematic procedure for constructing critical state models in three dimensions. International Journal of Solids and Structures, Vol. 40(2003), P. 4379

DOI: 10.1016/s0020-7683(03)00226-9

[7] G.T. Houlsby and A.M. Puzrin. Principles of hyperplasticity: an approach to plasticity theory based on thermodynamic principles. Springer: London (2006)

[8] S.C. Chi, X.X. Guo, et al. Small strain characteristics and threshold strain of dynamic Hardin-Drnevich model for soils. Chinese Journal of Geotechnical Engineering, Vol. 30(2008), P. 243