Lukasz Kaczmarczyk
@likask.bsky.social
Prof. of Applied Computational Modelling at #GlasgowUniversity in #GCEC. Created & developed #MoFEM http://mofem.eng.gla.ac.uk.
Seeking robustness while preserving high accuracy is a tricky business. We are on the right track, but not yet where I would like us to be. We are testing the Higham method for projecting onto a cone of symmetric positive-definite matrices.
August 5, 2025 at 8:21 PM
Seeking robustness while preserving high accuracy is a tricky business. We are on the right track, but not yet where I would like us to be. We are testing the Higham method for projecting onto a cone of symmetric positive-definite matrices.
In #MoFEM (mofem.eng.gla.ac.uk), we like to break things and are not bad at this.
July 6, 2025 at 5:53 PM
In #MoFEM (mofem.eng.gla.ac.uk), we like to break things and are not bad at this.
Today was perfect weather for a swim in Loch Lomond. It was my second time, but I am already addicted to open water swimming.
June 21, 2025 at 5:47 PM
Today was perfect weather for a swim in Loch Lomond. It was my second time, but I am already addicted to open water swimming.
First MoFEM work in Ukrainian on a block solver for GPU. :)
May 31, 2025 at 1:40 PM
First MoFEM work in Ukrainian on a block solver for GPU. :)
We have the pleasure of running a workshop on modelling cracks in MoFEM for our colleagues from EDF and Amentum from 8 to 9 May. We have been working together on this topic for over 16 years.
May 5, 2025 at 11:33 AM
We have the pleasure of running a workshop on modelling cracks in MoFEM for our colleagues from EDF and Amentum from 8 to 9 May. We have been working together on this topic for over 16 years.
MoFEM accoring OpenHub. There are 53 developers, but according to the estimate, it will take a single professional programmer 73 years to write our code!
openhub.net/p/mofem
openhub.net/p/mofem
March 28, 2025 at 6:29 PM
MoFEM accoring OpenHub. There are 53 developers, but according to the estimate, it will take a single professional programmer 73 years to write our code!
openhub.net/p/mofem
openhub.net/p/mofem
Glasgow University can be also brutal.
March 21, 2025 at 9:51 AM
Glasgow University can be also brutal.
Let's pray, mechanics. Mechanics have one dogma, and that is objectivity.
Before the lecture in the old church.
Before the lecture in the old church.
March 6, 2025 at 4:08 PM
Let's pray, mechanics. Mechanics have one dogma, and that is objectivity.
Before the lecture in the old church.
Before the lecture in the old church.
Energetic spaces. The same mesh, 4th order, different space. You can observe how space (not the base itself) renders matrix structure and sparsity.
February 26, 2025 at 8:03 PM
Energetic spaces. The same mesh, 4th order, different space. You can observe how space (not the base itself) renders matrix structure and sparsity.
February 16, 2025 at 12:47 PM
Multibody contact with our hybridised solver. In Blender, I learned to handle multiple components and move the camera along the path. The effect is moderate.
February 11, 2025 at 12:19 AM
Multibody contact with our hybridised solver. In Blender, I learned to handle multiple components and move the camera along the path. The effect is moderate.
Sweet convergence. Works like a Swiss watch, but it might be better.
February 10, 2025 at 12:02 PM
Sweet convergence. Works like a Swiss watch, but it might be better.
It was a pretty nice lecture room for the Structural Mechanics course in the Anatomy Thomson lecture room.
February 5, 2025 at 10:03 AM
It was a pretty nice lecture room for the Structural Mechanics course in the Anatomy Thomson lecture room.
I'm playing more with Blender. HO elements and contact formulation in MoFEM, postprocessing glyphs in ParaView, and composition and rendering in Blender.
February 2, 2025 at 11:17 PM
I'm playing more with Blender. HO elements and contact formulation in MoFEM, postprocessing glyphs in ParaView, and composition and rendering in Blender.
My new chair, with a pillow. That is a present from the company Mesh Oriented Solutions (MOS).
January 22, 2025 at 12:34 PM
My new chair, with a pillow. That is a present from the company Mesh Oriented Solutions (MOS).
Today, I managed to learn how to render in Blender. Now, I need to learn the art of composition. ;)
January 20, 2025 at 12:56 AM
Today, I managed to learn how to render in Blender. Now, I need to learn the art of composition. ;)
Pinched cylinder. Nice Saturday animation. Standard benchmark test for shell elements, this time deployed with solid element on the tetrahedral mesh. Mixed hybridised FE formulation with weakly enforced angular momentum. #MoFEM
January 18, 2025 at 10:42 AM
Pinched cylinder. Nice Saturday animation. Standard benchmark test for shell elements, this time deployed with solid element on the tetrahedral mesh. Mixed hybridised FE formulation with weakly enforced angular momentum. #MoFEM
Driven cavity flow. Standard CFD test.
January 4, 2025 at 10:47 AM
Driven cavity flow. Standard CFD test.
Glencoe looks OK, but not enough snow for skiing :(
January 2, 2025 at 1:19 PM
Glencoe looks OK, but not enough snow for skiing :(
My cheat sheet for rotations in 3D (SO(3)). How many mistakes do I still have on it?
December 19, 2024 at 3:18 PM
My cheat sheet for rotations in 3D (SO(3)). How many mistakes do I still have on it?
My weekend reading. Super nice paper! Other introductions to Lie algebra have more than 100 pages.
December 15, 2024 at 1:03 PM
My weekend reading. Super nice paper! Other introductions to Lie algebra have more than 100 pages.
If you wonder, what are eiegn values of skew matrix,
December 9, 2024 at 11:49 AM
If you wonder, what are eiegn values of skew matrix,
Mathematica is so cool! You can derive a closed form for an exponential map for rotation from scratch.
December 9, 2024 at 11:46 AM
Mathematica is so cool! You can derive a closed form for an exponential map for rotation from scratch.
I have been struggling with rotations for several days. Whenever I look, there always seems to be a problem with them, even in the simplest cases.
December 8, 2024 at 9:24 AM
I have been struggling with rotations for several days. Whenever I look, there always seems to be a problem with them, even in the simplest cases.