Fatigue damage evaluation of adhesively bonded butt joints with a rubber-modified epoxy adhesive

Abstract

A damage evolution of adhesively bonded butt joints with a rubber-modi ed adhesive has been investigated under cyclic loading. An isotropic continuum damage model coupled with a kinetic law of damage evolution was applied to the butt joint. To solve the kinetic law, analytic and numerical methods were tried: the former solution was derived with some simpli cations and the latter one was derived rigorously without simplications. On comparing the analytic solutions with the numerical ones, it was con rmed that differences in the two solutions were small. Furthermore, the estimated S-N curves based on the analytic equation agreed well with experimental data.

Fatigue damage modelling of adhesively bonded joints under variable amplitude loading using a cohesive zone model

“…16,17]. In this method, a damage variable is defined which modifies the constitutive response of the adhesive.…”

Fatigue life assessment of adhesive joints based on ratchetting strain evolution

“…Ishii et al [13] also employed the stress singularity to evaluate the fatigue strength of various lap joints. Imanaka et al [14] developed a continuum damage model, which was coupled with a kinetic law of damage evolution. The normalized apparent Young's modulus was really important in measuring the damage characteristics since it was corresponded to the decrease of the effective cross-sectional area due to the formation and growth of voids and microcracks.…”

Predicting fatigue damage in adhesively bonded joints using a cohesive zone model

“…Wahab et al [11], Imanaka et al [12], Hilmy et al [13,14]) employed continuum damage mechanics to predict the fatigue in adhesively bonded joints. In this method, a damage parameter (D) is defined which modifies the constitutive response of the adhesive.…”