Interfacial stress analysis of geometrically modified adhesive joints in steel beams strengthened with FRP laminates
Artikel i vetenskaplig tidskrift, 2009

One major problem when using bonded Fiber Reinforced Polymer laminates is the presence of high interfacial stresses near the end of the composite laminate which might govern the failure of the strengthening schedule. A method that has been proposed for reducing the magnitude of the interfacial stresses is laminate end tapering, which can be used with or without adhesive fillets. In this paper, a comprehensive FE study has been conducted to investigate the effect of using normal and reverse tapering with and without adhesive fillets on the interfacial stress distribution in the adhesive joints at different locations, including the mid-thickness of the adhesive layer, as well as interfaces. The results indicate that using the correct combination of tapering and adhesive fillet can reduce the magnitude of the interfacial stresses significantly. However, the inappropriate use of tapering and adhesive fillets might cause higher stresses than those in joints without geometrical modification.

Fillet

Stress concentration

Tapering

Adhesive joint

FE analysis

Interfacial

FRP

Författare

Reza Haghani Dogaheh

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Mohammad Al-Emrani

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Robert Kliger

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Construction and Building Materials

0950-0618 (ISSN)

Vol. 23 3 1413-1422

Ämneskategorier

Husbyggnad

DOI

10.1016/j.conbuildmat.2008.07.013