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Parametric Study of Crankshaft Natural Frequencies
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English
Abstract
Identification of natural frequencies is a fundamental step in crankshaft design. For satisfactory operation they should be well separated from the operating speed range and several of its harmonics. These frequencies depend on crankshaft's mounting conditions, its geometry and material properties. In this work ten crankshaft parameters are identified besides the bearing stiffness which can bring about changes in natural frequencies. The effect of variation of each of these parameters is studied. Also, the feasibility of using geometrically identical spheroidal graphite iron crankshaft in place of a forged one is examined from the point of view of natural frequencies. Three crankshafts are considered for the intended study.
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Citation
Prakash, V., Vadiraj, M., Venkatesh, D., and Shrinivasa, U., "Parametric Study of Crankshaft Natural Frequencies," SAE Technical Paper 940698, 1994, https://doi.org/10.4271/940698.Also In
New Developments in Engine Design and Engine Component Technology
Number: SP-1017 ; Published: 1994-03-01
Number: SP-1017 ; Published: 1994-03-01
References
- Carrato, P.J.; Fu, C.C.; ‘Modal analysis for Torsional Vibration of Diesel Crankshafts’; SAE paper no. 861225, p 79-87 1986.
- Robert, C.B.; ‘A Practical Treatise on Engine Crankshaft Torsional Vibration Control’, SAE paper no. 790763, p 1-38, 1979.
- Ker Wilson, W, ‘Practical Solution of Torsional Vibration Problems’, Volume 1, Chapman and Hall Ltd., London, 1965.
- Heath A.R.; McNamara P.M., “Crankshaft: stress analysis. Combination of finite element and classical analysis techniques”, Journal of Engineering for Gas Turbines and Power, Transactions of the ASME, v 112 n 3 July p 268-275, 1990.
- Ebrahimi, N.D.; ‘Finite Elements in Free Torsional Vibration Analysis of Multi-stepped shafts with rotors’, Int. Journal of Mech. Engg. Education, v 17 n 3 July, p 175-186, 1989.
- Hamai, Kyugo; Masuda, Tsuyoshi; Goto, Takaharu, “Structural analysis on crankshaft considering oil film pressure distribution around sliding bearings”, Tribology Transactions, v 33 n 2 Apr p 179-184, 1990.
- Nefske, D.J.; Sung, S.H.; ‘Coupled Vibration Response of the Engine Crank-Block system’, ASME DE v 18-4 p 379-385, New York, 1989.
- Prakash, V.; Venkatesh, D.N.; Shrinivasa, U.; ‘The effect of bearing stiffness on crankshaft natural frequencies’, Paper communicated to SAE, July 1993.