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DONG Hongrui, SUI Qianlong, WEI Daohe, et al. Simulation study on cooling process of titanium alloy wide-chord hollow fan blade based on inverse heat transfer parameters[J]. Aeronautical Manufacturing Technology, 2026, 69(10): 25010162.DOI: 10.16080/j.issn1671-833x.25010162.
Simulation Study on Cooling Process of Titanium Alloy Wide-Chord Hollow Fan Blade Based on Inverse Heat Transfer Parameters
This study investigates the influence of cooling methods on residual stresses in wide-chord hollow fan blades made of titanium alloy through a combination of experimental research and finite element simulation. Temperature data from TC4 titanium alloy square plates under various heat transfer conditions were collected
and the interfacial heat transfer coefficient under different conditions was determined using the DEFORM software. High-temperature uniaxial tensile tests were conducted
and the accuracy of the finite element simulation was verified by comparing residual stresses under different cooling methods. The temperature and stress fields of the stress-free state for hollow fan blades were analyzed
and the effects of the two cooling methods on the residual stresses in the component were compared. It was found that residual stresses after cooling primarily distributed within the hollow section of the blade and along the thin-walled edges of the blade body. Furthermore
during air cooling
residual stress values rapidly peaked at the onset of cooling before gradually relaxing throughout the process. In contrast
furnace cooling
with its slower external temperature decrease
did not generate stress peaks during the initial cooling phase. These findings provide guiding principles for the mass production of wide-chord hollow fan blades made from TC4 titanium alloy.
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