@lwilde and I are currently planning to build a magnetron sputter setup. Since i learned that #freecad also is includes #FEM functions I want to try and model the magnetic field of the magnetron. I managed to get very simple geometries to work but quickly got stuck on more involved once.
Does someone know a nice guide which explains how to properly design 2D geometry for FEM simulation. Or maybe can explain to me what the operation in the red circle is, which is used in the examples?
Solving sparse finite element problems on neuromorphic hardware
https://www.nature.com/articles/s42256-025-01143-2
Free preprint https://arxiv.org/abs/2501.10526
As you solve partial differential equations without noticing with every move you make this is really useful problem solving #ai
As the number of people understanding #FEM (finitite element methods) actually is small this will not be exagarated as #llm.
Because there are more idiots who can talk than engineers who can calculate
If one has a linear-elastic material in mind, one would assume this works for any kind of finite element simulations. In case of large rotations and large strains, "linear" is not unique. There are many different implementations of linear-elastic materials. Beside the mathematical details, a cube, rotated by 90° and stretched to a factor of 2, will show different deformations. You'll see a small-strain, Total-Lagrange (Saint-Venant Kirchhoff material) and the co-rotated framework as well as a compressible Neo-Hookean material model formulation.
Reminder: don't use small-strain linear-elastic material formulations in simulations where large rotations occur - just because the strains are "small".
All figures created by #felupe for simulation and #pyvista for plotting.
#python #computationalmechanics #scientificcomputing #numpy #fem #fea #opensource
Să te străduiești cu orice chip să păstrezi pacea sufletească și să nu te tulburi de insultele celorlalți Dacă nu ne este cu putință să rămânem netulburați, trebuie cel puțin să ne înfrânăm limba, după cum spune Psalmistul: Tulburatu-m-am și n-am grăit (Psalmul 76, 4). 👉 https://c.aparatorul.md/mkpu1 👈 #AflareamoaștelorSfântuluiCuviosSerafimdeSarov #cumsapastrezpaceasufletului #cumsărămânemnetulburați #CuvinteDuhovniceşti #Demon #EpiscopulNeocezareeiPontului #fem...
https://c.aparatorul.md/mkpu1
Ruth Holliday and
Jacqueline Sanchez Taylor argue that ideology in the West has actually promoted
the notion that “false” beauty is bad because it is sinful while “natural” beauty is
good because it has traditionally signified obedience and passivity (2006). This
has led to a culture where the “masked” woman is seen in negative terms:
Women who paint their faces usually do so for seduction – using sexuality to
confuse men, usually with some ulterior motive in mind. Women using make-
up are thus bad women, as opposed to unpainted good women. So naturally
beautiful women are good, falsely beautiful made-up women are bad – bad
because they have a sexuality.
(2006, 182)
in (Feminism and Female Sexuality) Hannah McCann - Queering Femininity_ Sexuality, Feminism and the Politics of Presentation-Routledge (2017)
Our most recent paper on #SPH / #FEM coupling for offshore structures modeling with #GPUSPH has been published:
https://authors.elsevier.com/c/1m3VB_hNWk2tT
These kinds of works, with validation against experimental results, is always a challenging task, even for the simpler problems. Lab experiments and numerical simulations have each their own set of problems that need to be addressed, and the people working on the two sides of the fence often have a very different perspective on what should be considered trivial and not worth measuring, and what is instead crucial to the success of the experiment.
Getting these two sides to talk to each other successfully is no walk in the park, and I wish to extend my deepest gratitude to Vito Zago, who has gone to incredible lengths both during the “science making” to make things work out, and during the manuscript submission and review process, a nearly Sisyphean task in itself.
#SmoothedParticleHydrodynamics #FiniteElements #FiniteElementMethods
I Wonder where the #hearingaids developers are! These would be awesome to have do a talk.
Same for the "process signal, but *fast*" people; top of my head, we've got @rygorous , but he's more on the "fast" than on the signals side. We have @mkretz who could talk about C++ SIMD stuff, but my guess: he'd prefer to talk in a room full of compileristas?
Are #EMerge #FEM/#Heavi people here? It'd seem #Sionna gets a lot of well-deserved attention combing physics+signals, but it's not the sole toolkit!
I made a #streamlit app for a nonlinear #fea simulation of a deformable hyperelastic solid body. This uses #FElupe for the simulation and #pyvista / #stpyvista for showing the final result in your browser.
https://felupe-web.streamlit.app/
#computationalmechanics #scientificcomputing #fem #python #opensource #FiniteElementMethod
@jeffowski Just some quick thoughts...
1. The “michaelandwicket” account is spot on.
2. It's hard to say, unless you're really into this sort of stuff, about the present degree of continued Russian troll and bot operations, but it wouldn't surprise me to learn that's what this was.
3. I'm so *very* glad to not be on Twitter.
🚀 I’ve been working on HierBEM, a 3D Galerkin boundary element method (BEM) library. It uses hierarchical matrices (\(\mathcal{H}\)-matrices) for near log-linear complexity.
🔧 Built on deal.II, written in C++ with CUDA acceleration. Still early in development, but it could already be useful — and might serve as a nice supplement to deal.II.
💡 Feedback and thoughts are very welcome!
https://github.com/jihuan-tian/hierbem
#HierBEM #bem #dealii #fem #NumericalSimulation #NumericalComputation
What’s new in FEM for FreeCAD 1.1?
Now that the feature freeze for FreeCAD 1.1 is on, and we are not too far off from the final release, let’s summarize the main changes in the FEM workbench. Just like in the case of the revolutionary 1.0.0 release (see this blog post), FEM dominates the release notes. There have been many significant improvements, so let’s go through them.
Electromagnet
https://blog.freecad.org/2025/09/09/what-is-new-in-fem-for-freecad-1-1/
#DevelopmentUpdates #FEM
After a summerbreak, #FElupe development continues! Stay tuned for lots of handy new features: checkpoint/restore, revolve a.k.a. axi-to-3d, simplified handling of multiple solid bodies, etc. These new features are already available in the main git branch and will be released soon.
https://felupe.readthedocs.io/en/latest/
P.S. I'm always open for new ideas, just let me know!
#computationalmechanics #scientificcomputing #python #opensource #fem #fea #finiteelements
Die „BewegungsForscher“ laden zum nächsten Treffen ein!
Im Fokus: der Steifigkeitsmechanismus!
Es gibt eine Einführung in die Finite-Elemente-Methode, Austausch und Sessions, in denen Deine Ideen direkt einfließen.
So entstehen Lösungen, die den Alltag von Anwenderinnen erleichtern.
Jetzt anmelden und Teil der Bewegung werden!
#BewegungsForscher #CitizenScience #Innovation #FEM #Orthesen #odpfalz #innovativehochschule
Să te străduiești cu orice chip să păstrezi pacea sufletească și să nu te tulburi de insultele celorlalți Dacă nu ne este cu putință să rămânem netulburați, trebuie cel puțin să ne înfrânăm limba, după cum spune Psalmistul: Tulburatu-m-am și n-am grăit (Psalmul 76, 4). 👉 https://c.aparatorul.md/oh54y 👈 #AflareamoaștelorSfântuluiCuviosSerafimdeSarov #cumsapastrezpaceasufletului #cumsărămânemnetulburați #CuvinteDuhovniceşti #Demon #EpiscopulNeocezareeiPontului #fem...
https://c.aparatorul.md/oh54y
САПР «ГАММА»: российская альтернатива для проектирования СВЧ-электроники
Импортозамещение в области систем автоматизации проектирования стало новым технологическим стандартом. Особенно остро этот вопрос стоит в высокочастотной электронике. Проектирование компонентов, работающих в диапазонах сверхвысоких частот, требует точности, моделей, верификации и совместимости с оборудованием. Отказ зарубежных вендоров от поставок или обновлений ПО поставил многие проектные группы в тупик. Но у отечественной промышленности есть свой ответ. Им стала
https://habr.com/ru/companies/itglobalcom/articles/936796/
#сапр #гамма #автоматизированное_проектирование #свч #fem #fdtd #hfss #ads #российское_по #awr
Daj znać, jakie są Twoje doświadczenia z programami MES. Czy używałeś Robota? Z czego aktualnie korzystasz? W kolejnych wpisach opiszę kilka narzędzi z tej kategorii, a na koniec pokażę, z czym zostałem na dłużej.
#NarzednikInzyniera #StackInzyniera #MES #FEM
