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Date
2021-01-25Subject
620 Engineering SchadensmechanikMathematisches ModellKlebeverbindungLebensdauerPrognoseMechanische BeanspruchungMetadata
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Aufsatz
Damage modelling for the lifetime prediction of structural adhesive joints subjected to hygro‐thermo‐mechanical long‐term loading
Abstract
A damage model is presented for the lifetime prediction of structural adhesive joints under hygro‐thermo‐mechanical loading. The damage approach is applied through a cohesive zone model together with the concept of effective stress. It consists of a temperature‐dependent creep and hygro damage evolution due to mechanical loading and chemical aging, caused by the local water concentration. The creep damage part considers multiaxiality of the loading by an equivalent stress. The model parameters are identified by means of rupture times from creep tests under different mechanical loadings, temperatures and humidity conditions. The model and the identified parameters are verified by means of FE‐simulations until rupture of an adhesive joint.
Citation
In: Proceedings in applied mathematics and mechanics (PAMM) Volume 20 / Issue 1 (2021-01-25) EISSN 1617-7061Sponsorship
Gefördert im Rahmen des Projekts DEALCitation
@article{doi:10.17170/kobra-202101283088,
author={Kroll, Ulrich and Matzenmiller, Anton},
title={Damage modelling for the lifetime prediction of structural adhesive joints subjected to hygro‐thermo‐mechanical long‐term loading},
journal={Proceedings in applied mathematics and mechanics (PAMM)},
year={2021}
}
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2021-02-15T18:09:12Z 2021-02-15T18:09:12Z 2021-01-25 doi:10.17170/kobra-202101283088 http://hdl.handle.net/123456789/12510 Gefördert im Rahmen des Projekts DEAL eng Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ 620 Damage modelling for the lifetime prediction of structural adhesive joints subjected to hygro‐thermo‐mechanical long‐term loading Aufsatz A damage model is presented for the lifetime prediction of structural adhesive joints under hygro‐thermo‐mechanical loading. The damage approach is applied through a cohesive zone model together with the concept of effective stress. It consists of a temperature‐dependent creep and hygro damage evolution due to mechanical loading and chemical aging, caused by the local water concentration. The creep damage part considers multiaxiality of the loading by an equivalent stress. The model parameters are identified by means of rupture times from creep tests under different mechanical loadings, temperatures and humidity conditions. The model and the identified parameters are verified by means of FE‐simulations until rupture of an adhesive joint. open access Kroll, Ulrich Matzenmiller, Anton doi:10.1002/pamm.202000092 Schadensmechanik Mathematisches Modell Klebeverbindung Lebensdauer Prognose Mechanische Beanspruchung publishedVersion EISSN 1617-7061 Issue 1 Proceedings in applied mathematics and mechanics (PAMM) Volume 20 false e202000092
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