MECHANICAL BEHAVIOR OF PRESTRESSED VISCOELASTIC ADHESIVE AREAS UNDER COMBINING LOADINGS

Authors : Halil Murat ENGİNSOY, Osman ASİ

Pages : 1077-1088

Doi:10.18038/aubtda.323679

View : 14 | Download : 8

Publication Date : 2017-12-31

Article Type : Research Paper

Abstract :In this article, mechanical behaviors of adhesive tape VHB 4950 elastomeric material, which is an element of acrylic polymer group and which is in viscoelastic behavior, under different pre-stress conditions and complex forces of different geometric parameters created by combining loadings have been experimentally and numerically investigated. In experimental studies, loading-unloading cyclic tests, one of the different standardized tests for the mechanical characterization of viscoelastic material, have been applied which give the most suitable convergent optimization parameters for the finite element model. Different material models were also investigated by using the data obtained from loading-unloading test results in all numerical models. According to the experimental results, the most suitable material parameters were determined with the Abaqus Parallel Rheological Framework Model insert ignore into journalissuearticles values(PRF); for 4 Yeoh Networks with Bergstrom-Boyce Flow model created in the Mcalibration software for finite element analysis. Subsequently, using these material parameters, finite element analysis was performed as three dimension non-linear viscoelastic with a commercial finite element software Abaqus. The finite element analysis results showed good correlation to the Force insert ignore into journalissuearticles values(N);-Displacement insert ignore into journalissuearticles values(mm); experimental data for maximum load-carrying capacity of structural specimens.
Keywords : Viscoelasticity, PRF Modelling, Simulation, VHB 4950