This paper studied a new shape unit model based on Gibson and Ashby's theory. As a result of theoretical research, the relative density equation is correlated with relative elasticity, and through this study, the theoretical relationship between the relative elasticity equation was defined. The relative elasticity equation was defined based on the model for which the analysis was performed. According to the analysis results, the diameter of the model was set to 3 mm, and the maximum stress values were confirmed by reflecting the same boundary conditions. The maximum stress for each model is 5668.9MPa for Type 1, 5136.7MPa for Type 2, 5642MPa for Type 3, and 6032.9MPa for Type 4 when the truss diameter is 3mm. The relative elasticity equation was defined based on this condition. In the future, compression analysis will have to be performed in the same way, reflecting the diameter of the truss at 5 mm and 7 mm, to find and define the coefficients of the relative elasticity equation, and verification through experiments will have to be carried out based on the theoretical equation. In addition, in order to be applied in each field, proof through prototype production and installation must be carried out.

Abstract
1. 서 론
2. 이론적 배경
    2.1 Gibson and Ashby’s Theory
3. 모 델 형상
    3.1 상대 밀도
    3.2 상대 탄성계수
4. 모 델 해석
    4.1 압축 해석
    4.2 경계조건
5. 해석 결과 및 상대탄성식
    5.1 상대 탄성계수 비교
    5.2 상대 탄성계수 관계식
6. 결 론
References

• 최정호(Assistant Professor, Dept. of Phronesis Convergence, Kyungnam University) | Jeongho Choi Corresponding author