基于内聚力模型的轮盘破裂转速预测方法研究  

Study on Burst Speed of Rotating Disks Based on Cohesive Zone Model

作　　者：黄红梅[1] 赵凯 贾文斌 潘磊[1] 方磊[1] 周柏卓[2] HUANG Hongmei;ZHAO Kai;JIA Wenbin;PAN Lei;FANG Lei;ZHOU Baizhuo(Jiangsu Province Key Laboratory of Aerospace Power System,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Shenyang Aeroengine Research Institute,Aero Engine Corporation of China,Shenyang 110005,China)

机构地区：[1]南京航空航天大学江苏省航空动力系统重点实验室,江苏南京210016 [2]中国航空发动机集团沈阳发动机设计研究所,辽宁沈阳110015

出　　处：《机械制造与自动化》2021年第1期147-151,共5页Machine Building & Automation

摘　　要：基于双线性内聚力模型研究含初始径向裂纹的轮盘破裂转速。该模型用于模拟含初始裂纹的轮盘裂纹扩展过程,并预测轮盘的破裂转速。内聚力模型通过高强度钢4340轮盘验证,其预测的破裂转速与试验值相比误差为2.51%;将内聚力模型应用于GH4169高温合金轮盘。结果表明:随着初始径向裂纹尺寸的增加,破裂转速下降,预测的破裂转速与理论解相比误差均<4%。Based on the bilinear cohesive zone model,the burst speed of the disk with initial radial cracks was studied.By the model,the simulation of the crack propagation process of the disk with initial cracks was adopted and predication of the burst speed of the disk was made.The cohesive zone model was verified by a high-strength 4340 disk,and the error of its predicted burst speed was performed 2.51% compared with the experimental value.The cohesive zone model was applied to GH4169.The results show that as the initial radial crack size increases,the rupture speed decreases,and the predicted rupture speed is less than 4% compared with the theoretical solution.

关 键 词：航空发动机 张力位移关系 内聚力模型 旋转轮盘 破裂转速 

分 类 号：V231.91[航空宇航科学与技术—航空宇航推进理论与工程]