The AROMATH seminar will usually happen on Tuesday at 10h30-11h30 every two weeks, except for a few deviations.
The presentations will typically take place at Inria Sophia Antipolis, Byron Blanc 106, and also online.
To join online, at https://cutt.ly/aromath or with a web browser at https://cutt.ly/aromath-web
use meeting ID: 828 5859 7791, passcode: 123
Xiao Xiao -- Isogeometric Design and Analysis of Lattice-Skin structures
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11 January 2019
The development of additive manufacturing techniques allows novel designs using lattice structures in mechanical parts, lightweight materials, biomaterials and so forth. Lattice-skin structures are a class of structures that couple thin-shells with lattices, which potentially combine the advantages of the thin-shell and the lattice structure. However, in current commercial CAD and finite element analysis packages, it is not trivial to deal with the generation and analysis of lattice-skin structures. A new and systematic scheme that integrates the geometric design and structural analysis of lattice- skin structures will be introduced in the talk.
In the geometry generation of lattice-skin structures, the shape interrogation of subdivision surfaces using a bounding volume tree of k-dops (discrete oriented polytopes) and implicit matrix representations of Bézier surfaces is introduced. The structural analysis of lattice-skin structures is in the isogeometric framework, in which the thin-shell is represented with a subdivision surface and the lattice structure is modelled with pin-jointed truss elements. The lattice-skin coupling is considered with a Lagrange multiplier approach. Some numerical examples will also be presented.
Bio: Xiao Xiao is finishing his PhD at the university of Cambridge under the supervision of Fehmi Cirak.
