On the strength prediction of adhesively bonded FRP-steel joints using cohesive zone modelling
Journal article, 2017

The variety of failure modes that are likely to occur in fibre-reinforced polymer (FRP)/steel joints used in the construction industry adds to the complexity associated with the design of these joints. This variation in possible failure modes is mainly attributed to the lack of a controlled application environment and to rather insufficient quality assurance protocols and procedures. The use of energy-based methods such as, cohesive zone modelling (CZM), can be a solution to circumvent such complexities. This paper investigates a number of issues related to CZM analyses of FRP/steel adhesive joints using various test configurations and a comprehensive numerical study. Parameters such as the effect of shape and type of cohesive law, crack path location, length of damage process zone, variations of adhesive and FRP properties, and different failure modes including cohesive, interfacial debonding and FRP failure on the strength of joints are investigated. The results show that the behaviour of the tested joints is accurately predicted provided that the variation of failure modes are taken into account. Moreover, it is shown that the damage process zone in adhesive layer is directly proportional to the shape of cohesive laws. This feature can be employed in the design phase to ensure sufficient overlap length and to account for important in-service parameters such as temperature and moisture.

Civil engineering structures

Composites

Interface fracture

Crack growth

Fibre reinforced materials

Cohesive zone modelling

Author

Mohsen Heshmati

Chalmers, Civil and Environmental Engineering, Structural Engineering

Reza Haghani Dogaheh

Chalmers, Civil and Environmental Engineering, Structural Engineering

Mohammad Al-Emrani

Chalmers, Civil and Environmental Engineering, Structural Engineering

Alann André

Chalmers, Civil and Environmental Engineering, Structural Engineering

Theoretical and Applied Fracture Mechanics

0167-8442 (ISSN)

Subject Categories

Mechanical Engineering

Applied Mechanics

Infrastructure Engineering

Other Materials Engineering

Composite Science and Engineering

Driving Forces

Sustainable development

Areas of Advance

Transport

Building Futures (2010-2018)

Materials Science

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

DOI

10.1016/j.tafmec.2017.06.022

More information

Created

10/8/2017