Linear and nonlinear transient response of sandwich beams made of FG-GPLRC faces and FGP core under moving distributed masses

• Published in: Engineering analysis with boundary elements Vol. 175; p. 106221
• Main Authors: Wattanasakulpong, Nuttawit, Songsuwan, Wachirawit
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.06.2025
• Subjects: FG-GPLRC material; Moving distributed mass; Porous material; Sandwich beams; Moving distributed mass; FG-GPLRC material; Porous material; Sandwich beams
• ISSN: 0955-7997
• DOI: 10.1016/j.enganabound.2025.106221

This study considers transient response of sandwich beams produced from functionally graded graphene platelets-reinforced composite faces and functionally graded porous core under the action of various types of moving distributed masses. The equations of motion are developed by the energy method using a von Kármán type nonlinear strain-displacement relationship. Different micromechanical models are modified to approximate the effective material properties at the faces and the core. In order to solve the nonlinear system of this problem, the Newton–Raphson iteration procedure, time-integration of Newmark, and the Chebyshev-Ritz method work together to solve the transient response of the beams related to different parameters, such as material distribution, moving mass distribution, mass distance, and others. Our research indicates that sandwich beams composed of a functionally graded porous core (Type 2) and a FG-V distribution of graphene platelets at the faces have demonstrated a remarkable capacity to tolerate dynamic deformation.