Influence of stress rate on rheology - An experimental study on rocksalt of Simla Himalaya, India

摘要

The stress-strain behaviour and mechanical properties were investigated on rocksalt samples collected from Guma rocksalt Mine, District Mandi, Himachal Pradesh. India. Cylindrical samples cored perpendicular to the bedding planes, were compressed using an automated closed loop servo-controlled testing machine at stress rates ranging from 9.12 x 10~(-3) MPa/ minute to 9.12 MPa/minute. The effects of stress rate on stress-strain behaviour as well as on mechanical properties were investigated by controlling the time of deformation. The stress-strain behaviour of rocksalts were verified by theoretical analysis with the help of the derivation of equations for Maxwell and Kelvin-Voigt Models connected in series.