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Effect of Vibration Cycles Batches on Shear Modulus and Damping of Dry Sand

Cherian, Achu Catherine and Kumar, Jyant (2017) Effect of Vibration Cycles Batches on Shear Modulus and Damping of Dry Sand. In: JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 143 (9).

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Official URL: http://doi.org/10.1061/(ASCE)GT.19435606.0001742

Abstract

Resonant column tests were conducted to examine the variation in shear modulus (G) and damping ratio (D) of dry sand subjected to 10 batches of vibration cycles. Each batch increment comprised 1,000 cycles. Tests were performed by varying void ratio, confining pressures, and input driving voltage. The vibration cycles cause a continuous increment in shear strain, which eventually leads to a decrease in shear modulus and an increase in damping ratio without affecting the basic variation of shear modulus and damping ratio with shear strain. The effect of each subsequent batch of 1,000 cycles reduces continuously as compared to the previous batch increment. The effect becomes more appreciable for (1) lower confining pressure and (2) greater void ratio and high input driving voltage. (C) 2017 American Society of Civil Engineers.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ASCE-AMER SOC CIVIL ENGINEERS, 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: Id for Latest eprints
Date Deposited: 16 Sep 2017 06:22
Last Modified: 16 Sep 2017 06:22
URI: http://eprints.iisc.ac.in/id/eprint/57799

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