Is minimum creep rate a fundamental material property?

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ConferenceProc. 9th Int. Conf. on Offshore Mechanics and Arctic Engineering (OMAE '90): 18 February 1990, Houston, TX, USA
Pages283288; # of pages: 6
AbstractIce engineering problems require solutions in terms of specific design stress, strain or damage limits. Engineers must know the interdependence between stress, strain, damage state and time for a given ice body at a given temperature distribution and loading history. Common practice of determining the mechanical properties of ice is to evaluate the rate sensitivity of maximum stress or the stress dependence of minimum creep rate. 'Minimum creep rate' ( also known as 'Secondary' or 'steady-state') and the corresponding rate laws, stress exponents, and coefficients are of limited value with respect to actual service conditions. Neither are they of much use in building constitutive equations for analyses of complex ice engineering problems. The engineer must focus instead on the structure and texture-sensitive transient phenomena, kinetics of crack damage and the associated effects within the very first percentt of creep deformation.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number32374
NPARC number20378662
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Record identifier1e8ab5d5-e51c-4e58-952c-d398de0b4c5b
Record created2012-07-24
Record modified2016-05-09
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