XU Kejun1, WANG Yongqi2, QIN Haiqin1, XIA Yirui1.Improvement of Constitutive Model for GH901 Material Based on Chaboche Theory[J].航空发动机,2017,43(5):39-47
Improvement of Constitutive Model for GH901 Material Based on Chaboche Theory
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Key Words:turbine disc  constitutive model  GH901  aeroengine
Author NameAffiliationE-mail
XU Kejun1, WANG Yongqi2, QIN Haiqin1, XIA Yirui1 1. Qingdao Campus of Naval Aeronautical University, Qingdao, Shandong 266041, China； 2. No.92514 Troop of PLA, Yantai, Shandong 264007, China xukejunxuran@126.com 
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Abstract:For the damage analysis of turbine disc of an aeroengine, the characters of Chaboche constitutive model was analyzed on the basis of high temperature monotonic tension test, low cycle fatigue test, creep test and fatigue creep interaction test of GH901 samples. The stain amplitude memory item was introduced into Chaboche constitutive model on the basis of variational pulse cycles of turbine disc in actural use. The Quantum Genetic Algorithm (QGA) was used to get the parameters of improved constitutive model according to the test result. Compared the calculation result with test result after getting the parameters of improved constitutive model, the improved constitutive model is proved to be reasonable.
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