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New : "Experimental and Computational Analysis of Energy Absorption Characteristics of Three Biomimetic Lattice Structures Under Compression" arxiv.org/abs/2308.14452

#preprint #finiteelementanalysis #biomechanics #lattice

Last updated 1 year ago

GIBBON is ready ! Heading to Paris tomorrow and can't wait to present the latest implementations and upgrades for FEBio4.

If you are attending the workshop, upgrade GIBBON to the latest version:
gibboncode.org/

cmbbe-symposium.com/2023/works

#cmbbe2023 #opensource #biomechanics #finiteelementanalysis #ComputationalMechanics #mechanicalengineering

Last updated 2 years ago

Checking out "Taubin" smoothing. Looks great for smoothing voxel derived meshes. Video shows voxel mesh (red) of a femur and the Taubin smoothed surface retrieved (white).

One of Taubin's papers: doi.org/10.1109/ICCV.1995.4668

GIBBON implementation: gibboncode.org/html/HELP_smoot

#opensource #biomechanics #finiteelementanalysis #meshing #GeometryProcessing

Last updated 2 years ago

Here the strain that you think you are applying (red curve) and the real strain in the middle layer (green curve) are plotted over time. As you can see a compressive Z-strain builds up during clamping which may offset the strain graph a lot.
Note this is Green-Lagrange strain. The linear tensile strain intended to be applied is 30%, the linear clamping strain is -30%.

gibboncode.org/html/DEMO_febio

#opensource #finiteelementanalysis

Last updated 2 years ago

Indentation with a twist.

The rigid ball pushes into the rubber-like hyperelastic cube while also spinning. Friction then transfers torsional forces to the cube as well.


gibboncode.org/html/DEMO_febio

#opensource #gibbon #febio #finiteelementanalysis

Last updated 2 years ago

New with collaborators Shaiv Parikh et al.

"Biomechanical characterisation of thoracic ascending aorta with preserved pre-stresses"

doi.org/10.1101/2022.12.02.518

Features some lovely automated meshing and with GIBBON

#openaccess #preprint #finiteelementanalysis

Last updated 2 years ago

Here is a nice review paper on: "What Kelvin might have written about Elasticity"
doi.org/10.1111/j.1365-2478.20

And more on benefits for use with :
arxiv.org/pdf/1605.09606

#finiteelementanalysis

Last updated 2 years ago

A simple demo for automated design, meshing and of a hyperelastic tire in contact with a road surface.

GIBBON implementation: gibboncode.org/html/DEMO_febio

#finiteelementanalysis #opensource

Last updated 2 years ago

Lovely new paper by PhD student I co-supervise: Mahtab Vafaeefar (Twitter: @MahtabVfa)

Have a look if you are into: lattice structures, trabecular bone, and/or

"A Morphological, Topological and Mechanical Investigation of Gyroid, Spinodoid and Dual-Lattice Algorithms as Structural Models of Trabecular Bone"

link
arxiv.org/abs/2211.13036

Journal link
doi.org/10.1016/j.jmbbm.2022.1

Uses GIBBON codes for lattice structure+model creation

#finiteelementanalysis #openaccess #opensource #biomechanics

Last updated 2 years ago

Automated meshing of a bifurcation (e.g. for blood vessel ) with hexahedral elements using toolbox.

1) Take a cylinder
2) Cut a hole at bifurcation curve
3) Create direction vectors for surface "departure and arrival"
4) Use smooth bezier spline based lofting
5) Thicken quads to form hex. elements.

Demo rendered here:
gibboncode.org/html/DEMO_mesh_

Bezier approach was inspired by @acegikmo 's spline work

#finiteelementanalysis #opensource #gibbon

Last updated 2 years ago