Functionally graded porous structures (FGPSs), characterized by a continuous spatial gradient in both porosity and material properties, have been considered as the new generation lightweight structures. Research activities on FGPSs have grown rapidly in recent years. This paper is devoted to review the existing research works on FGPSs and to highlight the important advances in this emerging area. It consists of: (i) a brief introduction of porous materials and Functionally graded porous materials (FGPMs); (ii) an elaboration of the key factor and micromechanical models related to material properties of FGPMs; (iii) a comprehensive review of mechanical analysis of FGPSs; (iv) a detailed discussion of the main challenges and future research directions; (v) a conclusion.

中文翻译：

---

功能梯度多孔结构的力学分析：综述

功能梯度多孔结构（FGPS）以孔隙率和材料特性的连续空间梯度为特征，被认为是新一代轻质结构。近年来，关于 FGPS 的研究活动迅速增长。本文致力于回顾现有的 FGPS 研究工作，并强调这一新兴领域的重要进展。它包括： (i) 多孔材料和功能梯度多孔材料 (FGPM) 简介；(ii) 阐述与 FGPM 材料特性相关的关键因素和微机械模型；(iii) 全面审查 FGPS 的机械分析；(iv) 对主要挑战和未来研究方向的详细讨论；(v) 结论。