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Stress and Vibration Analysis with respect to the change of the Shape of Screw Blade and the Hole for Centrifuge  

한근조 (동아대학교 기계공학과)
이성욱 (동아대학교 대학원 기계공학과)
심재준 (동아대학교 대학원 기계공학과)
한동섭 (동아대학교 대학원 기계공학과)
안찬우 (동아대학교 기계공학과)
서용권 (동아대학교 기계공학과)
김태형 (경남정보대학 기계자동차산업학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.9, 2003 , pp. 118-125 More about this Journal
Abstract
In this study, we carried out the finite element analysis for the screw of centrifuge that is the weakest part of the centrifuge for sewage management. Centrifugal force caused by rotation with velocity of 4000rpm was applied at the screw. Structural analysis was done with respect to the change of the ratio of blade pitch($R_P$), shaft diameter($R_D$) and extended hole($R_E$). When the area of circular hole is equal to that of extended holes, maximum equivalent stresses in the screw with circular and extended circular hole were compared. And then natural frequency analysis was executed for the same model. Three mode shapes were used to explain the vibration characteristics of each screw. Convergence study was accomplished fur more accurate results.
Keywords
Centrifuge; Screw; Sewage discharge hole; Centrifugal force; Natural frequency analysis;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Park, J. K., Ha, S. K. and Kim, Y. H., 'Optimal Design of Ultracentrifuge Composite Rotor by Structural Analysis,' J. of the KSPE, Vol. 15, No. 1, pp.130-136, 1998   과학기술학회마을
2 Chapra, S. C. and Canale, R. P., Numerical Methods for Engineers, McGraw Hill, pp.438-472, 1998
3 Timoshenko, S. P. and Goodier, J. N., Theory of Elasticity, McGraw-Hill, pp.80-83, 1982
4 Yukawa, S., Timo, D. P. and Rubio, A., 'Fracture Design Practices for Rotating Equipment,' Fracture, Vol. 5, Academic Press, 1969
5 Ugral, A. C. and Fenster, S. K., Advanced Strength and Applied Elasticity, Elsevier, 2nd ed., 1981
6 Roark, J. R. and Young, W. C, Formulas for Stress and Strain, McGraw-Hill, 1975
7 Seo, Y. G., 'Development of Design Technique for Centrifuge,' Industrial-Academic Joint Work Final Report, Dong-A Univ., 2002
8 Kim, J. R., Park, J. K. and Yoon, K. C, 'An Optimum Design of a Rotor-Bearing Spindle System for a Ultra Centrifuge,' J. of the KSPE, Vol. 15, No. 6, pp.145-152, 1998   과학기술학회마을