Creep analysis and service life prediction of turbine blade with progressive damage
Zhijun Qiu,
Hongyang Zhang,
Donghuan Liu
et al.
Abstract:Creep failure is one of the dominate failure mode for high temperature turbine blade during service. Under the tensile stress caused by large centrifugal force of the blade and the thermal stress and thermal softening of the material, the displacement as well as the creep strain and damage increase gradually. The present paper firstly gives the temperature field of the blade under typical service condition with numerical modelling. Then Norton’s creep constitutive relation and Lemaitre-Chaboche damage model ar… Show more
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