摘要：In engineering application, a quantitative description of both fatigue and creep damage mechanisms is demanded for high-temperature alloy. This work employs the cohesive zone model to numerically simulate the crack propagation in a nickel-based super-alloy. Two separate damage evolution equations are introduced into the cohesive zone model to describe the fatigue and creep damage, respectively. Effects of temperature and loading hold period are discussed. The comparison shows a reasonable agreement between numerical results and experimental observations and confirms the potential of cohesive zone model for more complex loading conditions in engineering.
关键词：Cohesive zone model; creep damage evolution; fatigue damage evolution; temperature effects; hold time effects
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