Critical speed analysis of laminated composite, hollow drive shafts

A simple spinning laminated composite shaft model

“…The model was used to analyze the critical speeds of thin-walled composite shafts. Kim and Bert (1993) adopted a shell theory of first-order approximation to derive the governing equations of the rotating composite thin-walled shafts. They used this model to analyze the critical speeds of various types of composite shafts.…”

Free Vibration Analysis of a Rotating Composite Shaft Using the p‐Version of the Finite Element Method

“…As can be seen from the table, our results are close to those predicted by other beam theories. Since in the studied example the wall of the shaft is relatively thin, models based on shell theories [4] are expected to yield more accurate results. In the present example, the critical speed measured from the experiment however is still underestimated by using Sander shell theory, while overestimated by Donnell shallow shell theory.…”

“…Gupta and Singh [3] studied the effect of shear-normal coupling on rotor natural frequencies and modal damping. Kim and Bert [4] have formulated the problem of determination of critical speeds of a composite shaft including the effects of bending-twisting coupling. The shaft was modelled as a Bresse-Timoshenko beam.…”

Dynamic Analysis of a Spinning Laminated Composite-Material Shaft Using the hp-version of the Finite Element Method

“…As can be seen from the table our results are close to those predicted by other beam theories. Since in the studied example the wall of the shaft is relatively thin, models based on shell theories (Kim & Bert, 1993) are expected to yield more accurate results. In the present example, the critical speed measured from the experiment however is still underestimated by using the Sander shell theory while overestimated by the Donnell shallow shell theory.…”