Cohesive zone modeling of creep–fatigue crack propagation with dwell time
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 ar...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2017-10-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/1687814017721144 |
| Summary: | 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. |
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| ISSN: | 1687-8140 |