Numerical Analysis of Interfacial Fracture Behavior in Repaired Structures.

구조 보강재와 피보강재 접합경계면의 역학적 특성에 관한 해석적 연구

  • 박진완 (유니슨(주) 연구원) ;
  • 신승교 (연세대학교 공과대학 토목공학과) ;
  • 임윤묵 (연세대학교 공과대학 토목공학과) ;
  • 김문겸 (연세대학교 공과대학 토목공학과)
  • Published : 1999.10.01

Abstract

An interface always appears when a repair is applied to an aged infrastructure system for repair. These repaired structures have the high chance to fail along the interface because of the stress concentration/discontinuity along the interface. So, mechanical properties of the interface have much influence on the behavior of repaired structure systems. In this paper, numerical tool that can predict effectively the interfacial fracture behavior is developed using axial deformation link elements, and this numerical technique is applied to the interfacial failure behavior. The results coincide with the ultimate strength and failure profile on the interfacial behavior of carbon fiber sheets for strengthening with epoxy adhesion. Thus, the mechanical behavior of the interface up to failure can be predicted using numerical technique with the proposed axial deformation link elements.

Keywords