터보차져 임펠러의 구조설계 평가

The impeller in a turbocharger is a key component and is subject to the various loads as well as centrifugal force over 10,000rpm. The high structural reliability and stability are required to the impeller which is assembled with a rotor shaft, bearings and thrust collar. In this paper, the structural assessment of the impeller which is made of the aluminium alloy was presented. In order to confirm it, structural and dynamic evaluation using FE analyses were performed. In FE analyses, centrifugal force, thermal load, working pressure and mechanical contact between neighboring components were taken into account. Structural contribution for each loading was compar ed. Additionally, the characteristics of deformation and vibration under each loadingwere also investigated.