Design of Three-Dimensional Functionally Graded Composite Structures to Maximize Stiffness and Natural Frequency

Hak-Yong Jang; Jeonghoon Yoo

doi:10.7734/COSEIK.2026.39.1.41

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2026 Vol.39, Issue 1 Preview Page Next Page

Research Paper

Design of Three-Dimensional Functionally Graded Composite Structures to Maximize Stiffness and Natural Frequency 강성과 고유진동수 최대화를 위한 3차원 경사기능 복합재 구조 설계

28 February 2026. pp. 41-48

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Abstract

This study proposes a design methodology for three-dimensional functionally graded composite structures (FGCSs) by integrating the concept of functionally graded materials (FGMs) with a topology optimization framework. For the design of multiscale composite structures, anisotropic material properties are evaluated using a representative volume element (RVE)–based machine learning module, combined with rotation matrix calculations based on unit quaternions. In addition, a multi-objective optimization is performed with structural stiffness and natural frequency as objective functions to evaluate the optimized structural configurations and their performance under diverse physical environments. The proposed approach enables systematic design of FGCSs with enhanced stiffness and dynamic characteristics.

Keywords

functionally graded composite structure

topology optimization

representative volume element

machine learning

본 논문에서는 경사기능재료(Functionally Graded Material, FGM) 개념과 위상최적설계 방법을 통해 3차원 경사기능복합재 구조(Functionally Graded Composite Structure, FGCS)의 설계 방법을 제안한다. 다중 스케일 복합재 구조 설계 시 이방성 재료 물성치의 계산은 RVE 기반 ML 모듈과 단위 사원수를 활용한 회전 행렬 계산을 통해 수행된다. 또한, 본 연구에서는 다양한 물리적 환경을 설계에 반영하기 위해 구조물의 강성과 함께 고유진동수를 목적함수로 설정한 다중 목적함수 최적설계를 수행하여 구조물의 최적화 형상과 성능을 분석한다.

키워드

경사기능 복합재 구조

위상최적설계

대표체적요소

머신러닝

References

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Information

Publisher :Computational Structural Engineering Institute of Korea
Publisher(Ko) :한국전산구조공학회
Journal Title :Journal of the Computational Structural Engineering Institute of Korea
Journal Title(Ko) :한국전산구조공학회 논문집
Volume : 39
No :1
Pages :41-48
Received Date : 2025-12-01
Revised Date : 2025-12-04
Accepted Date : 2025-12-05
DOI :https://doi.org/10.7734/COSEIK.2026.39.1.41

Journal of the Computational Structural Engineering Institute of Korea ISSN:1229-3059(Print) 2287-2302(Online) 한국전산구조공학회 논문집

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