Proceedings Vol. 21 (2015)
ENGINEERING MECHANICS 2015
May 11 – 14, 2015, Svratka, Czech Republic
Copyright © 2015 Institute of Theoretical and Applied Mechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)
list of papers scientific commitee
pages 142 - 143, full text
We present a decomposition of equations of motion in solids into a curl-zero (longitudinal) component and a divergence-zero (shear) component. Partitioned equations of motion are needed for accurate finite element numerical modelling of wave propagation problems. In that case, each equation of motion is integrated separately with corresponding critical time step size in explicit time integration. By this approach, dispersion behaviour of the finite element method and mainly spurious oscillations in numerical results can be suppressed.
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