Trefftz Collocation For Frequency Domain Elastodynamic Problems
Free (open access)
281 - 291
V. M. A. Leitão, B. Sensale & B. S. Rodriguez
A Trefftz collocation method is proposed for the analysis of two-dimensional elastodynamic problems subjected to steady-state time-harmonic loads. Trefftz methods are characterized by the use of a superposition of a number of actual solutions of the homogeneous part of governing equations, the so-called T(Trefftz)-functions. This leads to high quality approximations where the unknowns are the weights of each of the T-functions considered. The unknowns are found by matching the approximations to the boundary conditions by following a standard collocation approach. The numerical implementation of the method is briefly described and results are obtained for two anti-plane elastodynamic problems. The results compare quite favourably to other results available in the literature whereby Galerkin and collocation boundary element methods were used. Keywords: Trefftz method, elastodynamics, collocation.
Trefftz method, elastodynamics, collocation