Dynamic behavior of FG-TPMS sandwich plates on a Pasternak viscoelastic foundation under moving loads using Moving Element Method

Abstract

This study investigates the dynamic response of sandwich plates with a functionally graded
triply periodic minimal surface (FG-TPMS) core, supported by a viscoelastic foundation, under the
influence of moving loads. Inspired by natural biological structures, the FG-TPMS core provides a unique
artificial design known for its superior load-bearing capabilities compared to conventional frameworks.
Due to its exceptional strength-to-weight ratio, the TPMS structure delivers a lightweight yet robust
solution, optimizing material usage while ensuring high structural efficiency. The Moving Element
Method (MEM) is employed for dynamic analysis, offering notable advantages over traditional
techniques in handling moving load problems. Additionally, MEM proves effective in addressing
boundary condition sensitivity issues in TPMS-based plates. To gain deeper insight into the behavior of
FG-TPMS sandwich plates under dynamic loads, key parameters - including the minimum relative
density, the isotropic layer thickness, and the TPMS core thickness - will be comprehensively examined.