Computational mechanics paper
Birk, C, Song, C 2014, 'Numerical modelling of seismic waves using image-processing and quadtree meshes', in ST Smith (ed.), 23rd Australasian Conference on the Mechanics of Structures and Materials (ACMSM23), vol. II, Byron Bay, NSW, 9-12 December, Southern Cross University, Lismore, NSW, pp. 819-824. ISBN: 9780994152008.
This paper presents an automatic meshing procedure which is based on image processing techniques. It is suitable for problems with heterogeneous geometric features, which cannot be described by accurate drawings, in particular if details of very different scales are present. The scaled boundary finite element method facilitates structural analysis on the resulting quadtree mesh, as it incorporates hanging nodes in an elegant and straightforward way. The proposed method is applied to the problem of seismic waves in highly heterogeneous soils. Here, the maximum mesh size is governed by the material properties and frequency content of the excitation. A large-scale two-dimensional soilstructure interaction problem is studied to illustrate the potential of the proposed approach.