Fusion stiffness modification of spring and fe modal in rod fasten rotor
Zhang Zi-yang1; Xie Shou-sheng1; Qian Zheng-wen1; Long Men2;Peng Jing-bo1
1.The Engineering Institute, Air Force Engineering University, Xi’an 710038, China;2.Telecommunication Engineering Institute Air Force Engineering University， Xi’an 710077, China
Abstract：This paper presents a method to update the FE(finite element) modal of high pressure spool in aero engine. Having analyzed the mechanical modals which described the contacting surfaces between the wheel disks in rod fasten rotor, it remodeled the contacting surface of FE modal of high pressure spool. By using a fusion method which combines the modification of stiffness of the spring and FE modal together, it develops a total optimization modal for FE modal stiffness updating which concerns contacting surface. Furthermore, it employs the straighten algorithm to extract the parameters which need to be calibrated in the calculation of the optimization modal, and modifies them with modal parameters got by experimental modal analysis. Results of an experimental application of this fusion modification are given to illustrate that the modified FE modal truly represents the contacting state of high pressure spool.
张子阳;谢寿生;钱征文;龙 门;彭靖波. 拉杆结构中弹簧刚度和有限元模型刚度融合修正方法研究[J]. , 2011, 30(11): 53-56.
Zhang Zi-yang;Xie Shou-sheng;Qian Zheng-wen;Long Men;Peng Jing-bo. Fusion stiffness modification of spring and fe modal in rod fasten rotor. , 2011, 30(11): 53-56.
2011, Vol. 30 
