Premium
Some theoretical aspects in computational analysis of adhesive lap joints
Author(s) -
Destuynder P.,
Michavila F.,
Santos A.,
Ousset Y.
Publication year - 1992
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620350606
Subject(s) - adhesive , homogenization (climate) , gravitational singularity , strain energy release rate , materials science , lap joint , stress intensity factor , asymptotic expansion , numerical analysis , structural engineering , composite material , fracture mechanics , mathematics , mathematical analysis , engineering , biodiversity , ecology , layer (electronics) , biology
This paper is devoted to the numerical analysis of bidimensional bonded lap joints. For this purpose, the stress singularities occurring at the intersections of the adherend‐adhesive interfaces with the free edges are first investigated and a method for computing both the order and the intensity factor of these singularities is described briefly. After that, a simplified model, in which the adhesive domain is reduced to a line, is derived by using an asymptotic expansion method. Then, assuming that the assembly debonding is produced by a macro‐crack propagation in the adhesive, the associated energy release rate is computed. Finally, a homogenization technique is used in order to take into account a preliminary adhesive damage consisting of periodic micro‐cracks. Some numerical results are presented.