Abstract
A synthesized simulation process was used to predicting temperature and high cycle fatigue (HCF) of cylinder head in this paper. Firstly, the temperature prediction model was built and calibrated by the test data, which ensured the rationality. The simulation result shows that the material thermal conductivity is very low and the position of the drilling holes near the deck is very high, and the thermal load was reduced effectively through improving the material conductivity and optimizing the structure design. Finally a fatigue life evaluation has been performed which shows the HCF safety factor is higher than the original design due to the temperature reduction.
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