Details

Autor(en) / Beteiligte

• Spinu, S
• Gradinaru, D

Titel

Semi-analytical computation of displacement in linear viscoelastic materials

Ist Teil von

• IOP conference series. Materials Science and Engineering, 2015-11, Vol.95 (1), p.12111

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2015

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• Prediction of mechanical contact performance based on elastic models is not accurate in case of viscoelastic materials; however, a closed-form description of the viscoelastic contact has yet to be found. This paper aims to advance a semi-analytical method for computation of displacement induced in viscoelastic materials by arbitrary surface tractions, as a prerequisite to a semi-analytical solution for the viscoelastic contact problem. The newly advanced model is expected to provide greater generality, allowing for arbitrary contact geometry and or arbitrary loading history. While time-independent equations in the purely elastic model can be treated numerically by imposing a spatial discretization only, a viscoelastic constitutive law requires supplementary temporal discretization capable of simulating the memory effect specific to viscoelastic materials. By deriving new influence coefficients, computation of displacement induced in a viscoelastic material by a known but otherwise arbitrary history of surface tractions can be achieved via superposition authorized by the Boltzmann superposition theory applicable in the frame of linear viscoelasticity.