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Surface crack modelling in an engine compressor disc
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DOI：10.1016/j.tafmec.2019.102279.png)
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摘要
En 中文
This work presents two distinct procedures to perform fatigue crack-growth simulations in a high pressure compressor disc of a turbofan engine. Two distinct load cases were separately considered as applied to the compressor disc under analysis: one load case was used to replicate a full-size experimental fatigue bench test, whereas the other was used to simulate the real in service operating conditions of the engine. Two distinct approaches were adopted for the simulations: a full FEM approach and a particular variant of a FEM-DBEM submodelling strategy. It is worth mentioning that, with the latter approach, the only needed boundary conditions for the DBEM submodel analysis are tractions applied on the crack faces; such tractions are derived by the global FEM analysis. A sound agreement between numerical and experimental outcomes was obtained.
Keyword:
Crack-growth
FEM
DBEM
Turbofan
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