Abstract
This paper presents a study on the torsional vibration of a multi-sectional diesel engine crankshaft using both discrete lumped-mass spring model and finite element model. A dynamical torsional stiffness matrix is established from the model and is used to calculate the torsional response of the crankshaft due to an external torsional excitation. The result is then compared to that of finite element analysis. It is found that although the result calculated using the discrete model agrees well with that obtained using finite element analysis in general, large discrepancies can also be observed between the two results. Results obtained from this study prompts for the need to establish a more accurate continuous 3-dimensional model for the multi-section crankshaft.
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The financial support from Shandong provincial government of the People’s Republic of China through the privileged “Taishan Scholar” program for this work is gratefully acknowledged.
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Lin, T.R., Zhang, X.W. (2019). A Study of the Torsional Vibration of a 4-Cylinder Diesel Engine Crankshaft. In: Mathew, J., Lim, C., Ma, L., Sands, D., Cholette, M., Borghesani, P. (eds) Asset Intelligence through Integration and Interoperability and Contemporary Vibration Engineering Technologies. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-95711-1_38
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