Using a cohesive damage model to predict the tensile behaviour of CFRP single-s...

• Author(s): Campilho, Raul ; Moura, M. F. S. F. de ; Domingues, J. J. M. S.
• Date: 2008
• Persistent ID: http://hdl.handle.net/10400.22/4161
• Origin: Repositório Científico do Instituto Politécnico do Porto
• Subject(s): Adhesive joints; Composites; Repair; Cohesive damage model
• Document Type: Article
• Language: English

Description

This work addresses both experimental and numerical analyses regarding the tensile behaviour of CFRP single-strap repairs. Two fundamental geometrical parameters were studied: overlap length and patch thickness. The numerical model used ABAQUS® software and a developed cohesive mixed-mode damage model adequate for ductile adhesives, and implemented within interface finite elements. Stress analyses and strength predictions were carried out. Experimental and numerical comparisons were performed on failure modes, failure load and equivalent stiffness of the repair. Good correlation was found between experimental and numerical results, showing that the proposed model can be successfully applied to bonded joints or repairs.