46 citations
4 papers
Crack propagation in quasi-brittle materials by fourth-order phase-field cohesive zone model
Khuong D. Nguyen, Cuong-Le Thanh, Frank Vogel +2
A phase-field approach becomes a more popular candidate in modeling crack propagation. It uses a scalar auxiliary variable, namely a phase-field variable, to model a discontinuity…
Ray and wave scattering in smoothly curved thin shell cylindrical ridges
Niels Sondergaard, David Chappell
We propose wave and ray approaches for modelling mid- and high- frequency structural vibrations through smoothed joints on thin shell cylindrical ridges. The models both emerge fro…
Transport of phase space densities through tetrahedral meshes using discrete flow mapping
Janis Bajars, David Chappell, Niels Sondergaard +1
Discrete flow mapping was recently introduced as an efficient ray based method determining wave energy distributions in complex built up structures. Wave energy densities are trans…
Discrete flow mapping: transport of phase space densities on triangulated surfaces
David Chappell, Gregor Tanner, Niels Sondergaard +1
Energy distributions of high frequency linear wave fields are often modelled in terms of flow or transport equations with ray dynamics given by a Hamiltonian vector field in phase…