Thermo-mechanical-dynamic coupling analysis on cold compressor rotor. (April 2019)

• Record Type: Journal Article
• Authors: Wei, C B; Dong, X B; Yang, S Q; Jia, Q M; Zhang, S Y; Lv, C; Wu, J H
• Is Part Of: IOP conference series. Volume 502(2019)
• Publication Date: 2019-04
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/502/1/012048
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: Cold compressor rotor works in complex thermal filed, which endures huge temperature differences from room temperature to low-temperature. To study the effect of thermal field on deformation and dynamics of cold compressor rotor, a thermo-mechanical-dynamic coupling analysis is carried out by finite element software ANSYS. Firstly, a thermal analysis on the entire compressor is carried out by CFX and the temperature distribution is obtained. Secondly, a static structural analysis considering thermal loads and contact effect is performed. The thermal stress and deformation are obtained. Finally, a pre-stress modal analysis in working thermal field is carried out. The results show that: The axial distance between blade tip and thrust disc reduces by 117.41 μm. The first two natural frequencies of the cold compressor rotor have a slight improvement by less than 2.16% and higher order natural frequency is more sensitive to thermal effect.