Dynamic Behavior of Ice under Cyclic Axial Loading

by Ted S. Vinson, (A.M.ASCE), Assoc. Prof. of Civ. Engrg.; Oregon State Univ., Corvallis, Oreg.,
Thira Chaichanavong, Instr.; Kasetsart Univ., Bangkok, Thailand; formerly, Research Asst., Div. of Engrg. Research, Michigan State Univ., East Lansing, Mich.,


Serial Information: Journal of the Geotechnical Engineering Division, 1978, Vol. 104, Issue 7, Pg. 801-814


Document Type: Journal Paper

Abstract: Dynamic Young's modulus and damping ratio were determined for axial strain amplitudes from 3 x 10-³% to 2 x 10-²%, temperatures from 30.2°F to 14°F (-1°C to -10°C), frequencies from 0.05 cps to 5.0 cps, and confining pressures from 0 to 200 psi (0 kN/m² to 1,380 kN/m²). The value of dynamic Young's modulus over the range of test conditions was from 340 x 10³ psi to 900 x 10³ psi (2,350 x 10³ kN/m² to 6,200 x 10³ N/m²); the value of damping ratio was from 0.02 to 0.11. The test results indicate the dynamic Young's modulus of ice increases with increasing confining pressure and frequency and decreases with ascending temperature and strain amplitude. The damping ratio of ice appears to deecrease as frequency increases from 0.05 cps to 1.0 cps and increases as frequency increases from 1.0 cps to 5.0 cps. The damping ratio appears to decrease with descending temperature and increase with increasing strain amplitude. There appears to be no well-defined relationship between the damping ratio of ice and confining pressure.

Subject Headings: Dynamic modulus | Damping | Elasticity | Temperature effects | Ice | Axial forces | Dynamic pressure | Strain

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