Numerical Studies of Laboratory Triaxial Creep Tests

摘要

Triaxial-creep experiments conducted on cyclindrical specimens provide the basic data for modeling the behavior of rock salt. Even in the most carefully performed of these experiments, frictional effects between the ends of the salt sample and the platens of the testing machine prevent homogeneous stress and strain conditions from being achieved. Using the finite-element technique, detailed analyses of uniaxial- and triaxial-creep experiments are performed to investigate the extent of the inhomogeneities caused by end effects. It is then possible to estimate the errors which the end effects produce in the interpretation of creep data on rock salt. (ERA citation 08:034673)