A hybrid-Trefftz finite element platform for solid and porous elastodynamics

Hybrid-Trefftz finite elements are well suited for modeling the response of materials under highly transient loading. Their approximation bases built using functions that satisfy exactly differential equations governing problem. This option embeds relevant physical information into basis and removes well-known sensitivity conventional to high solution gradients short wavelength excitations. Despite such advantages, no public software hybrid-Trefftz model wave propagation through solid porous media exists date. paper covers formulation implementation single-phase, biphasic triphasic media, subjected dynamic loads. The is cast in a unified framework, valid three types alike, independent nature (harmonic, periodic or transient) applied load. Displacement, traction, elastic absorbing boundary conditions accommodated. made novel, open-source user-friendly computational modules which freely distributed online.