Experimental and numerical investigation of size effects in polyurethane adhesive sealings

M. Johlitz, H. Steeb, S. Diebels, J. Batal, W. Possart

Research output: Contribution to journalArticleAcademicpeer-review

1 Downloads (Pure)


ln our contribution we present an extended continuum-based material model which is ahle to capture size effects in adhesive bonds. lhe model is based on the introduction of a scalar-valued structure parameter and its related postulated balance equation. On the experimental side we perform shear tests on polyurethane bonds of anodised aluminium hy using d(fferent shear rates and d(fferent thicknesses of the bonded joints. The results o_f' these shear tests show a thickness-dependent stiffness behaviour of the Jpecimens. Finally the obtained experimental data are _fitted with the extended material model. The introdur.ed model parameters are ident(fied hy using an optimisation tool based on biologic evolution slra/egies.
Original languageEnglish
Pages (from-to)3-12
Number of pages10
JournalTechnische Mechanik
Issue number1-3
Publication statusPublished - 2008
Externally publishedYes

Cite this