In this study, a shape design and an analysis considering structural stability were investigated to develop an icosahedron-based hemispherical modular dome. To design this modular dome, a program that can perform icosahedron shape modeling, modularization of joint connection members, and the analysis of structural stability was developed. Furthermore, based on the adopted numerical model, the eigen buckling mode, unstable behavior characteristics according to load vector, and the critical buckling load of the modular dome under uniformly distributed load and concentrated load were analyzed, and the resistance capacities of the structure according to different load vectors were compared. The analysis results for the modular dome suggest that the developed program can perform joint modeling for shape design as well as modular member design, and adequately expressed the nonlinear behaviors of structured according to load conditions. The critical buckling load results also correctly reflected the characteristics of the load conditions. The uniformly distributed load was more advantageous to the structural stability than concentrated load.

Abstract
 1. 서 론
 2. 모듈러 돔 설계/해석 프로세스
  2.1 정20면체(Icosahedron) 형상모델링
  2.2 모듈러 돔의 기하학적 단위유닛
  2.3 MICD 모델의 절점 유닛과 모형
 3. 비선형 강성행렬과 불안정 판별
 4. MICD 모델의 불안정성과 임계하중
  4.1 MICD 모델의 고유좌굴모드
  4.2 비선형 거동과 임계좌굴하중
 5. 결 론
 감사의 글
 References

• 손수덕(한국기술교육대학교 건축공학부 연구교수, 공학박사) | Shon, Su-Deok
• 우효준(한국기술교육대학교 건축공학부 대학원, 석사과정) | Woo, Hyo-Jun
• 이승재(한국기술교육대학교 건축공학부 교수, 공학) | Lee, Seung-Jae 교신저자