Abstract
One-component adhesives are proved to be very advantageous in the automotive industry. The occurrence of deformations during adhesive bonding of thin@ steel sheets is caused by the local and temporal temperature distribution during curing. The influence of thermal expansion and curing shrinkage, as well as relative movements of the adherends on the resulting deformations have been investigated experimentally and numerically. To investigate various boundary conditions a sample geometry, consisting of a stiff substructure and a thin top element, as well as a real part, namely a sunroof, were used. Dynamic mechanical thermal analysis (DMTA) was used for evaluating the mechanical properties of the adhesive, which was treated as a viscoelastic continuum with temperature dependent properties. Possibilities of how to simulate the so-called bondline read-through effect are discussed.
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Hahn, O., Jendrny, J. Evaluation of Simulation Models for the Estimation of Deformation of Adhesively Bonded Steel Sheets during Curing. Weld World 47, 31–38 (2003). https://doi.org/10.1007/BF03266392
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DOI: https://doi.org/10.1007/BF03266392