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Wong replied to the topic How can I use triangle force field to model vessels? in the forum Using SOFA 6 months, 2 weeks ago
I tried to use TriangularTensorMassForceField to model a deformable vessel and use RestShapeSpringsForceField to fix both ends.
However, when I used instrument to drag the vessel, the parts closed to both fixed ends would expand distrotedly, which was not like the normal behavior of the relastic one.
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Wong started the topic How can I use triangle force field to model vessels? in the forum Using SOFA 6 months, 2 weeks ago
Hello everyone,
How can I use triangle force field to model vessels?
Wong
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Wong replied to the topic Vec3d forcefield for suface mesh model with skeleton instead of Rigid3d BeamFEMF in the forum Using SOFA 9 months, 2 weeks ago
Hello @rainvector
I do not think only BeamFEMForcefield is sufficient. Because using rigid dofs with BeamFEMForceField can only make surface mesh deform globally but not locally.
You can try to construct your example scn and test if it is true.
Wong
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Wong replied to the topic Vec3d forcefield for suface mesh model with skeleton instead of Rigid3d BeamFEMF in the forum Using SOFA 9 months, 2 weeks ago
Hello @hugo
I have ever thought about rigid dofs mapped from vec dofs with TetrahedralCorotationalFEMForceField. But I do not think the tetrahedral elements are suitable for a tubular model. The size of the element would be small and the number of the elements would be very large so it would lead to high overhead and low frame rate.
So I think a…[Read more]
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Wong replied to the topic Vec3d forcefield for suface mesh model with skeleton instead of Rigid3d BeamFEMF in the forum Using SOFA 9 months, 3 weeks ago
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Wong started the topic Vec3d forcefield for suface mesh model with skeleton instead of Rigid3d BeamFEMF in the forum Using SOFA 9 months, 3 weeks ago
Hello everyone,
I want to simulate a soft strip model like vessel. As we all know that BeamFEMForceField is usually used for such simulations.
However, BeamFEMForceField is a type of rigid3d force field component and it can only control global deformation by effect on its skeleton. So there is no local deformation for its surface…[Read more]
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Wong replied to the topic How to use Tools for multi-material on Windows? in the forum Using SOFA 12 months ago
Hello @nickhockings,
Although I built it successfully but actually I want to report that there were some compile errors which occured in VS2015.
like in load_surface_meshes.cpp line 35
YAML::Node config = YAML::LoadFile(it->c_str());
should be change into
YAML::Node config = YAML::LoadFile(it->string());
And there are some other places using…[Read more]
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Wong replied to the topic How to use Tools for multi-material on Windows? in the forum Using SOFA 12 months ago
Hello @hugo,
luckily, I tried to buid it and I succeeded! Only CGAL and Yaml-CCP should be built threre, other dependencies can be directly downloaded and used.
I would continue to test it if there are bugs there. But I think it is hard for me to read the code about CGAL and there is very few information and tutorials on the Internet about how…[Read more]
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Wong started the topic How to use Tools for multi-material on Windows? in the forum Using SOFA 12 months ago
Hello
I notice Tools for multi-material has been released recently. link
But I find that it is hard to compile on Windows. There so many dependencies to be downloaded really. So I wonder if anyone provide a more detailed tutorial to get those dependencies and install. Or the whole prebuilt dependencies pack is still appreciated because I find…[Read more]
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Wong replied to the topic snake0.vtu not found in ModelOrderReduction in the forum Using SOFA 12 months ago
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Wong started the topic snake0.vtu not found in ModelOrderReduction in the forum Using SOFA 12 months ago
Hello everyone,
I tried the new example in ModelOrderReduction when it prompted that snake0.vtu was not found.
Could anyone tell me how to get the snake0.vtu?
Wong
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Wong replied to the topic Best Way to Implement Ligaments Attaching Finger Bones Together in the forum Using SOFA 1 year ago
Hello
I think you can take a look at this link to see if it is suitable for you.
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Wong replied to the topic How to prevent distortion of TetrahedralFEM in collision? in the forum Using SOFA 1 year ago
Hello @hugo,
Can you tell me how to use MeshMatrixMass because there is no existing example.
I use RestShapeSpringsForceField because I do not want to make the fixed part so hard sometimes.
Wong
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Wong started the topic How to prevent distortion of TetrahedralFEM in collision? in the forum Using SOFA 1 year, 2 months ago
Hi everyone,
I think some behaviors of the soft body using Tetrahedral-FEM-like force field are not realistic when collision occurs. Distortion can always be seen in arbitrary collision.
You can download the attachment and see more details in the video and the scene within:
https://www.dropbox.com/s/ev7z9g5hw959xel/distortion.rar?dl=0So…[Read more]
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Wong replied to the topic How to model a curved slack soft rope at the start? in the forum Using SOFA 1 year, 2 months ago
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Wong replied to the topic How to model a curved slack soft rope at the start? in the forum Using SOFA 1 year, 3 months ago
Sure, I will @ you on December 17.
Wong
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Wong replied to the topic How to model a curved slack soft rope at the start? in the forum Using SOFA 1 year, 3 months ago
Hello @hugo,
Just want to drag or block the artery/vessels and clip the aneurysm. So the level of accuracy should be fairly high.
Wong
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Wong replied to the topic How to model a curved slack soft rope at the start? in the forum Using SOFA 1 year, 3 months ago
Hello @hugo,
Just deform flexibly like the real one, from all directions and keep the performance in persisting contact. Because the vessels are located in the gap of the soft tissues.
Wong
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Wong replied to the topic How to model a curved slack soft rope at the start? in the forum Using SOFA 1 year, 3 months ago
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Wong replied to the topic How to model a curved slack soft rope at the start? in the forum Using SOFA 1 year, 3 months ago
Hello @yordan-kyosev
I think the situation is more complicated than you think. What I want to model is something like vessels. So you have to think on the case that the rope has branches.
As far as I can see, representation of beam is still nothing more than a strings of rigid bodies. It may cause low performance having masses of rigid frames and…[Read more] - Load More