Effect of angular velocity on thermoelastic behavior of thickcylindrical pressure vessels

This study investigates the influence of constant angular velocity ondisplacement and stress in a thick cylindrical pressure vessel under nonuniformmechanical loading and bi-directional thermal loading. A semianalyticalsolution is derived using the multi-layers method (MLM) toexplore these effects. The governing equations are based on first-ordershear deformation theory (FSDT) and first-order thermal theory (FTT),forming a set of general differential equations with variablecoefficients. Considering the cylindrical structure subjected to nonuniformmechanical loading, it is discretized into n homogeneous disks,each producing a set of differential equations. By applying appropriateboundary and continuity conditions between these layers, the solutionyields radial displacement and stresses. The stress and displacementprofiles along the axial direction, especially at the mid-thickness layer,provide detailed insights into the subtle and intricate effects of angularvelocity on the mechanical responses exhibited by cylindrical pressurevessels. These detailed profiles enable a precise evaluation of thestructure’s strength and stability under the given conditions.

Keywords:

Pressure vessels , Rotation , Multilayer Method , Nun-unformpressure