Transient Thermal Stresses in FG Porous Rotating Truncated Cones Reinforced by Graphene Platelets

• Main Authors: Asemi, K. (Author), Babaei, M. (Author), Dimitri, R. (Author), Kiarasi, F. (Author), Tornabene, F. (Author)
• Format: Article
• Language: English
• Published: MDPI 2022
• Subjects: FEM; functionally graded material; graphene platelets; porous structure; rotating truncated cone; transient thermal stress
• Online Access: View Fulltext in Publisher

 The present work studies an axisymmetric rotating truncated cone made of functionally graded (FG) porous materials reinforced by graphene platelets (GPLs) under a thermal loading. The problem is tackled theoretically based on a classical linear thermoelasticity approach. The truncated cone consists of a layered material with a uniform or non-uniform dispersion of GPLs in a metal matrix with open-cell internal pores, whose effective properties are determined according to the extended rule of mixture and modified Halpin–Tsai model. A graded finite element method (FEM) based on Rayleigh–Ritz energy formulation and Crank–Nicolson algorithm is here applied to solve the problem both in time and space domain. The thermo-mechanical response is checked for different porosity distributions (uniform and functionally graded), together with different types of GPL patterns across the cone thickness. A parametric study is performed to analyze the effect of porosity coefficients, weight fractions of GPL, semi-vertex angles of cone, and circular velocity, on the thermal, kinematic, and stress response of the structural member. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.