enginsoy, halil m. uşak university - faculty of engineering - department of mechanical engineering, Uşak, Turkey , asi, osman uşak university - faculty of engineering - department of mechanical engineering, Uşak, Turkey

MECHANICAL BEHAVIOR OF PRESTRESSED VISCOELASTIC ADHESIVE AREAS UNDER COMBINED LOADINGS

34471

In this study, the mechanical behaviors of the adhesive tape VHB 4950 elastomeric material are experimentally and numerically investigated. The VHB 4950 adhesive tape, which has viscoelastic behavior, is an element of acrylic polymer group and under different pre-stress conditions and complex forces (due to the different geometry of the designed test specimen). In experimental studies, the loading-unloading cyclic test, that is a kind of different standardized test for the mechanical characterization of viscoelastic material, is applied which give the most suitable convergent optimization parameters for the finite element model. Different material models are also investigated by using the data obtained from loading-unloading cyclic test results in all numerical models. According to the experimental results, the most suitable material parameters are determined with the Abaqus Parallel Rheological Framework Model (PRF) for the 4 Yeoh Networks with Bergstrom-Boyce Flow model which is created in the Mcalibration software for finite element analysis. By using these material parameters, the finite element analysis is performed by Abaqus software as three dimension non-linear viscoelastic. The finite element analysis results show good correlation to the Force (N)-Displacement (mm) experimental data for the maximum load-carrying capacity of the structural specimens.

1077

Viscoelasticity , PRF Modelling , Simulation , VHB 4950

Anadolu University Journal of Science and Technology. A : Applied Sciences and Engineering

1088