G. Limbert, First Numerics • G. Tabor, University of Exeter • B. Walker (ARUP)
A high resolution MicroCT scan (3µm) of the auxetic foam was imported into ScanIP. Noise reduction on the background image was applied and main regions were segmented using the automated threshold tool. Two masks representing the foam and surrounding air were extracted.
The +FE module was used to generate a multipart mesh for finite element analysis within minutes. The software guaranties matching nodes and elements at the contact surface. Also node sets were created at the boundaries of the material. Several meshes were exported to ABAQUS, Fluent and LS-DYNA.
Finite element and fluid flow simulations were run. ABAQUS was used to perform a structural analysis showing elasto plasticity within the materials. In Fluent a fluid flow simulation was run, showing the flow velocity through the air domain and fluid-solid interaction. Finally an impact simulation was performed using LS-DYNA to show the deformation of the foam under a dynamic load. Videos
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