The performance enhancement of various damping systems from natural hazards has become an highly important issue in engineering field. In this paper, ENTA hysteretic dampers were tested under cyclic loadings to evaluate their performance in terms of ductility and energy dissipation. The test results showed that the hysteretic dampers are effective damping systems to enhance the buildings performance for remodeling and retrofit of buildings. Also, the hysteretic dampers were modeled in FEM(Finite Element Method) structural analysis program. As comparing the computer modeling and the experiment, this study model reflects the nonlinear behavior of steel and derives the hysteresis loop.

Abstract
1. 서론
2. ENTA이력댐퍼 가력 실험
    2.1 실험체 제원 및 형상
    2.2 재료 시험
    2.3 실험체 설치 및 계측
    2.4 목표 변위 설정
3. 실험 결과 및 분석
    3.1 하중-변위 관계
    3.2 에너지 소산
4. 유한 요소 해석
    4.1 유한 요소 해석 모델링
    4.2 모델링 경계 조건
    4.3 유한 요소 해석 결과
5. 결론
References

• 이홍석(세종대학교 건축공학과) | Lee Hong-Seok (College of Architecture, Sejong University)
• 황정현(서울과학기술대학교 건축공학과) | Hwang Jung-Hyun (College of Architecture, Seoul National University of Science and Technology)
• 이기학(세종대학교 건축공학과) | Lee Kihak (College of Architecture, Sejong University) 교신저자