摘要
考虑不同组织分区材料性能差异影响,基于平均应力法、极限应变法、能量法及塑性失稳法进行了FGH99合金双性能涡轮盘破裂转速分析,并在室温和高温441℃下开展了涡轮盘破裂转速试验,均发生了径向破裂。与试验结果对比表明:平均应力法预测结果偏大,达到了9.42%,破裂模式预测结果不准确,径向破裂转速预测时应考虑修正系数0.80;极限应变法和能量法预测破裂转速与试验结果误差较小,最大为0.98%,且预测的破裂起始位置与试验结果吻合;塑性失稳法准确地预测了破裂模式,且破裂转速最大误差为2.27%。
Considering the influence of material performance differences in different organizational zones,the burst speed analysis of FGH99 alloy dual property turbine disk was conducted based on the average stress method,ultimate strain method,energy method,and plastic instability method.The turbine disk burst speed tests were conducted at room temperature and high temperature of 441℃,and radial fracture occurred in all cases.Comparison between the analysis and the test results showed that:the predicted result was larger than test data when using the average stress method with the error of 9.42%,and the prediction of fracture mode was not accurate.The correction factor 0.80 should be considered when predicting the radial burst speed;the maximum error between the predicted burst speed using the limit strain method and the energy method and the experimental results was 0.98%,and the predicted fracture starting position was consistent with the experimental results;the plastic instability method accurately predicted the fracture mode,and the maximum error in burst speed was 2.27%.
作者
秦仕勇
米春虎
古远兴
胡殿印
黎方娟
胡绪腾
潘容
QIN Shiyong;MI Chunhu;GU Yuanxing;HU Dianyin;LI Fangjuan;HU Xuteng;PAN Rong(Sichuan Gas Turbine Establishment,Aero Engine Corporation of China,Chengdu 610500,China;Research Institute of Aero-Engine,Beihang University,Beijing 100191,China;College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《航空动力学报》
北大核心
2025年第3期285-294,共10页
Journal of Aerospace Power
关键词
FGH99
双性能
涡轮盘
破裂转速
平均应力法
能量法
塑性失稳
FGH99
dual property
turbine disk
burst speed
average stress method
energy method
plastic instability
作者简介
秦仕勇(1986-),男,研究员,博士生,主要从事航空发动机结构强度研究。
