Nonlocal Buckling Analysis of Sandwich Beams with Auxetic Honeycomb Cores: A Systematic Review

This paper presents a systematic review of nonlocal buckling analysis for sandwich beams with auxetic honeycomb cores. The study investigates various analytical and numerical approaches based on Eringen's nonlocal elasticity and its recent derivatives, such as the nonlocal strain gradient theory. A comparative analysis of different beam theories (EBT, TBT, and TSDT) and solution methodologies (Galerkin, FEM, and Machine Learning) is provided. The review highlights that an increase in the nonlocal parameter consistently reduces the critical buckling load. Furthermore, it explores emerging trends including machine learning-based optimization and multi-physics environments, while pinpointing critical research gaps in dynamic buckling, defect modeling, and experimental validation.

کلیدواژه ها:

Nonlocal Elasticity ، Auxetic Honeycomb ، Sandwich Beams ، Buckling ، Systematic Review