Frictional Contact Problem Study on Compressor by a Parametric Quadratic Programming Method
A locomotive-type turbocharger compressor with 24 blades under combined centrifugal and interference-fit loading was considered in the numerical analysis.The solution of elastoplastic frictional contact problems belongs to the unspecified boundary problems where the interaction between two kinds of nonlinearities should occur.To save the time cost in the numerical computation,multi-substructure technique was adopted in the structural modeling.The effect of fit tolerance,wall thickness of shaft sleeve and rotational speed on the contact stress was discussed in detail in the numerical computation.To decrease the difficulty of the assembling process and make sure the safety of the working state,the amount of interference between the shaft sleeve and shaft by press-fitting should be controlled strictly to avoid the rapid increase of the contact stress.The numerical results show the high accuracy and good convergence of the algorithm presented here.The study play a referenced role in deciding the proper fit tolerance and improving design and manufacturing technology of compressor impellers.
Compressor Impeller Interference Fit Elastoplastic Contact Finite Element
Ai Hua Liao
College of Urban Railway Transportation,Shanghai University of Engineering Science,Shanghai,China
国际会议
广州
英文
21-24
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）