Regensburg 2004 – wissenschaftliches Programm
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M: Metallphysik
M 18: Postersitzung
M 18.14: Poster
Dienstag, 9. März 2004, 14:30–16:30, Saal C
Determination of Mechanical Characteristics of Adhesively Bonded Metal Joints by Experiment and Finite Element Data Analysis — •Jürgen Gegner1 and Andreas Öchsner2 — 1SKF GmbH, Material Physics, Ernst-Sachs-Str. 5, D-97424 Schweinfurt — 2University of Aveiro, Department of Mechanical Engineering, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
In all fields of industry, modern adhesives are in a position to cost-effectively join metal parts into complex components for e.g. structural bonding or sealing applications. Thus, computer-aided product design requires in situ determination of mechanical parameters. The thick-adherend tensile-shear test has established itself as the most important destructive testing method in adhesive technology. In the present work, this technique is improved relative to the standard ISO 11003-2 in the experimental and evaluation part. Stepped metal substrates ensure a more uniform stress state by increasing the stiffness of the assembly. The total displacement of the joint is measured directly at the overlap zone to minimize the influence of adherend deformation, which is considered by the numerical analysis of a dummy sample. Test evaluation is extended by a finite element simulation technique that additionally allows derivation of Youngś modulus from measured shear stress-strain curves. As concrete examples, steel and aluminum substrates were tested at various temperatures applying anaerobic and silicon adhesives with different bond gaps.