Critical speeds analysis of spinning laminated composite shaft based on isogeometric analysis

Abstract This article presents the critical speed analysis of spinning laminated composite shaft under the different coupling mechanism effects based on isogeometric analysis. The analysis of the layered tubular composite shaft is usually performed using shell elements, but the present study concerns with the equivalent single layer theory (ESLT) obtained from the transformation of the cylindrical coordinates to the Cartesian coordinates and therefore, it avoids the use of non-uniform rational Bsplines. The results obtained are in good agreement with the modified EMBT and the modified SHBT. It is found that the proposed approach can yield highly accurate solutions compared with other existing methods available in the literature. In addition, the numerical results of critical speeds are obtained and investigated under the Poisson’s effects and different mechanism coupling effects, length-to-mean diameter ratios, and stacking sequence of layers.