Journal of the Society of Materials Science, Japan
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
Original Papers
Remarks for Relationship Between Interfacial Average Stress in Delamination and Non-dimesional Intensity of Stress Singularity for Bonded Strips (Stress Analysis Based on FEM Using Singular Element)
Takahiko KURAHASHISatoshi OSHIMAKazuki IBEYutaro WATANABEToshimi KONDOHideo KOGUCHI
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2015 Volume 64 Issue 12 Pages 1018-1025

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Abstract

In this study, we clarified relationship between the interfacial average stress and the non-dimensional intensity of stress singularity for aluminum bonded joints. In experiments, delamination tests were carried out by changing thickness of the adhesive layer, and the delamination force for each thickness of the adhesive layer was obtained. In addition, the intensity of stress singularity for each bonded joints model was computed by results of stress analysis based on the FEM using Akin singular element. Consequently, the relationship between the delamination force and the intensity of stress singularity could be obtained. However, this relation can't be directly applied to evaluate the delamination force, because the value of the order of singularity is different at each target problem. Therefore, in this study, the non-dimensional intensity of stress singularity was calculated based on applied force and characteristic length, i.e., width and thickness of adhesive layer, and the relationship between the interfacial average stress in delamination and the non-dimensional intensity of stress singularity was finally derived.

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© 2015 by The Society of Materials Science, Japan
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