Response of functionally graded cylindrical shells under moving thermo-mechanical loads: Fid-Bau Portal

Response of functionally graded cylindrical shells under moving thermo-mechanical loads

Malekzadeh, P. / Heydarpour, Y.

Abstract The transient thermoelastic analysis of functionally graded (FG) cylindrical shells under moving boundary pressure and heat flux is presented. The material properties are assumed to be temperature-dependent and graded in the radial direction. The hyperbolic heat conduction equations are used to include the influence of finite heat wave speed (i.e., the non-Fourier effect). To benefit from the high accuracy and low computational efforts of the differential quadrature method (DQM) in conjunction with the effectiveness of the finite element method (FEM) in general geometry, loading and systematic boundary treatment, a combination of these methods is employed to discretize the governing equations in the spatial domain. The resulting system of differential equations is solved using Newmark's time integration scheme in the temporal domain. The presented formulation and method of solution are validated by showing their fast rate of convergence and by comparing the results, in the limit cases, with those obtained using the commercial finite element package ANSYS and some other available solutions in the literature. Then, the effects of different geometrical, material and load parameters on the transient thermoelastic behavior of the FG cylinders under moving mechanical and thermal loads are studied.

Highlights ► Transient thermoelastic analysis of FG cylinders under moving boundary pressure and heat flux. ► Using hyperbolic heat conduction equations to include the influence of finite heat wave speed. ► Using the hybrid of DQ and FE methods as a high accuracy and low computational efforts method. ► Presenting the effects of different parameters on the transient behavior of the FG cylinders.