Thermoelastic analysis of thick truncated conical shells with constant middle radius using first-order temperature theory

This study investigates the thermoelastic behavior of thick-walled truncated conical shells with a constant middle radius and linearly varying thickness under mechanical loading and bi-directional thermal gradients. The governing equations are formulated using First-Order Shear Deformation Theory (FSDT) combined with First-Order Temperature Theory (FTT), and are solved semi-analytically using the disk-form multilayer method (MLM). The analytical results are validated by finite element simulations, which show excellent agreement in radial displacement and stress distributions. Parametric analyses indicate that radial displacement and equivalent stress increase along the shell length and become more pronounced at higher angular velocities, while shear stresses remain negligible. These results provide valuable insights into the thermoelastic response of rotating conical pressure vessels and similar hightemperature structural components.