Premium
Modelling of nonlinear damage accumulation for the lifetime prediction of adhesively bonded joints
Author(s) -
Kroll Ulrich,
Matzenmiller Anton
Publication year - 2018
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201800202
Subject(s) - amplitude , nonlinear system , creep , structural engineering , materials science , damage mechanics , shear (geology) , adhesive , constant (computer programming) , mechanics , composite material , finite element method , computer science , engineering , physics , layer (electronics) , programming language , quantum mechanics
Abstract Two enhancements of a continuum damage mechanics model with a creep and fatigue part are presented in order to capture nonlinear damage accumulation of structural adhesive joints subjected to service loading. The enhancements are applied to the fatigue part and have an effect on its lifetime prediction due to variable amplitude loading, while its prediction for constant amplitude loading is not affected. Both approaches are validated by means of the comparison of test data with numerical lifetime predictions for shear loading with variable amplitudes.