TY - GEN
T1 - Exact solution of high-speed couplings for nterference fits
AU - Shang, Peng
AU - Zhan, Ying
AU - Feng, Sheng
AU - Zhou, Jian
AU - Yu, Lie
PY - 2013
Y1 - 2013
N2 - High-speed couplings are the key parts of micro-turbomachinerys. They are assembled to shafts by interference fits, which can transfer large torque, are easy to produce and offer significant cost advantages. Considering of the influences of the torque, rotational speed and temperature variation, the interference fits between couplings and shafts have to be analyzed accurately in order to save the construction cost and reducing risk of invalidation accidents. In this paper, a model of the interference fit between a coupling and a shaft is developed to study the determine parameters of the interference value. Using the classic elastic plane stress theory, the exact solutions of the radial stresses, hoop stresses and radial displacements are obtained. Three determine parameters (the torque, angular velocity and temperature variation correction terms) are derived in order to calculate the interference value. Taking a high-speed microturbomachinery for example, the numerical results show that the interference value is dependent of the ratios of inner radius to outer radius of the coupling and shaft significantly. The torque, angular velocity and temperature variation correction terms are in the same order of magnitude. The present analytical solutions are expected to be useful in the structure design of the interference fit between a high-speed coupling and a shaft.
AB - High-speed couplings are the key parts of micro-turbomachinerys. They are assembled to shafts by interference fits, which can transfer large torque, are easy to produce and offer significant cost advantages. Considering of the influences of the torque, rotational speed and temperature variation, the interference fits between couplings and shafts have to be analyzed accurately in order to save the construction cost and reducing risk of invalidation accidents. In this paper, a model of the interference fit between a coupling and a shaft is developed to study the determine parameters of the interference value. Using the classic elastic plane stress theory, the exact solutions of the radial stresses, hoop stresses and radial displacements are obtained. Three determine parameters (the torque, angular velocity and temperature variation correction terms) are derived in order to calculate the interference value. Taking a high-speed microturbomachinery for example, the numerical results show that the interference value is dependent of the ratios of inner radius to outer radius of the coupling and shaft significantly. The torque, angular velocity and temperature variation correction terms are in the same order of magnitude. The present analytical solutions are expected to be useful in the structure design of the interference fit between a high-speed coupling and a shaft.
KW - Analytical solution
KW - Couplings
KW - High-speed
KW - Interference fit
UR - http://www.scopus.com/inward/record.url?scp=84884858245&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.744.180
DO - 10.4028/www.scientific.net/AMR.744.180
M3 - 会议稿件
AN - SCOPUS:84884858245
SN - 9783037857595
T3 - Advanced Materials Research
SP - 180
EP - 184
BT - Advances in Material Science, Mechanical Engineering and Manufacturing
T2 - 2013 3rd International Conference on Machinery, Materials Science and Engineering Applications, MMSE 2013
Y2 - 20 June 2013 through 21 June 2013
ER -