Coupling of a 2D unsaturated elastodynamic structure with a bending beam by application of the wave based method

The Wave Based Method (WBM) is applied in order to simulate the field response of a 2D elastodynamic halfspace under harmonic loading. The structure is coupled with a filled trench in order to reduce vertical displacement amplitudes behind the trench at the surface due to a Rayleigh wave. Moreover, the WBM is extended by a second irrotational potential, in order to comply with Biot’s theory for a fully saturated poroelastic medium. This theory is modified according to the Berryman-Thigpen-Chin model (BTC), which permits to describe partially saturated structures by two irrotational potentials and one solenoidal potential. It assumes that the enclosed water and air phases within a porous structure behave as one mixed fluid. A coupling approach is presented to connect WBM domains with an Euler-Bernoulli beam as a wave barrier. The effectiveness of the Euler-Bernoulli beam is assessed by comparing it with an elastodynamic trench that is modeled by a WBM domain.     «

The Wave Based Method (WBM) is applied in order to simulate the field response of a 2D elastodynamic halfspace under harmonic loading. The structure is coupled with a filled trench in order to reduce vertical displacement amplitudes behind the trench at the surface due to a Rayleigh wave. Moreover, the WBM is extended by a second irrotational potential, in order to comply with Biot’s theory for a fully saturated poroelastic medium. This theory is modified according to the Berryman-Thigpen-Chin m...     »