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MODAL ANALYSES AND EXPERIMENTS FOR ENGINE CRANKSHAFTS

✍ Scribed by Y. Kang; G.-J. Sheen; M.-H. Tseng; S.-H. Tu; H.-W. Chiang

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
629 KB
Volume
214
Category
Article
ISSN
0022-460X

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✦ Synopsis

This study investigates the coupled modes, including coupled torsional-flexural vibration and coupled longitudinal-flexural vibration, for non-rotating crankshafts which are free-free suspended. The finite element models of those generally used are in two categories: beam elements and solid elements. By using these two models the natural frequencies and mode shapes of two crankshafts are determined by the finite element method (FEM) and compared with experimental data from modal testing. The accuracy and validity of the analytical approaches are verified. The results show that the solid element is more appropriate than the beam element in the modal analysis of crankshafts.

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