논문 상세보기
pp.142-143
In this study, tensile stresses of partially delaminated CFRP sheets were analytically evaluated. The analytical model is a 15-m long concrete beam with a rectangular cross-section of 2×3 m and uses 480 2D-plate elements and 5760 3D-solid elements for mesh construction. The elastic modulus of concrete and CFRP sheet used in the analysis are 27,536 MPa and 200,000 MPa, respectively, and the compressive strength of concrete and tensile strength of CFRP sheet are 30.0 MPa and 4,000 MPa, respectively. In order to evaluate the change of the tensile stress due to the delamination of the CFRP sheet, the whole attached model and the partially delaminated model according to the position of delamination were considered. As a result of the finite element analysis, the tensile stress of the entire attached CFRP sheet showed a constant tensile stress on the whole cross section, and the tensile stress of the partially delaminated CFRP sheet showed the maximum tensile stress on the position of delamination. Based on the results of this study, future research will be carried out to optimize the layout and shape of CFRP sheets embedded with optical fiber sensors.
1. 서 론
2. 유한요소 해석 모델
2.1 해석 모델 구성
2.2 해석 변수
3. 유한요소 해석 결과 분석 및 고찰
3.1 박리되지 않은 CFRP 시트의 인장 응력
3.2 부분 박리된 CFRP 시트의 인장 응력
4. 결 론
References
