ACCURATE SOLUTIONS OF WAVE PROPAGATION PROBLEMS UNDER IMPACT LOADING BY THE STANDARD, SPECTRAL AND ISOGEOMETRIC HIGH-ORDER FINITE ELEMENTS. COMPARISON AND PREDICTION OF ACCURACY OF DIFFERENT SPACE-DISCRETIZATION TECHNIQUES.

Abstract eng:
For the first time, accurate numerical solutions to impact problems have been obtained with the standard, spectral, and isogeometric high-order finite elements. Spurious high-frequency oscillations appearing in numerical results are quantified and filtered out by the two-stage time-integration approach. We also use the 1-D impact problem with a simple analytical solution for the comparison of accuracy of the different spacediscretization techniques used for transient acoustics and elastodynamics problems. The numerical results show the computational efficiency of the linear finite elements with reduced dispersion compared with other linear and high-order space-discretization techniques used for elastodynamics with implicit and explicit time-integration methods.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket