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When the displacements are zero, the strains are zero. This doesn't perform any iteration in the Newton-Raphson method when a `VanishingStress` material is used along with automatic differentiation. A…
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Hi all,
I have two problems when using Underworld (version 1.7.0).
(1) I find it's wired that when I run a 3D subduction model (similar to _Capitanio(2011)_'s configuration) at cell number of 96x64x96…
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### Enabling CartesianImpedenceControlMode
We want to enable cartesian/joint impedance mode via the C++ interface to the kuka iiwa.
Since this is a configuration change there are a couple questions …
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- [x] I suggest to include references to previous work on BEM with GPUs, e.g., the paper "GCA-H² matrix compression for electrostatic simulations" by S. Börm and S. Christophersen or the papers "Algor…
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Dear all,
I have some problems with my BeamDyn model. The following error keeps popping up at some simulations: "FAST_Solution:FAST_AdvanceStates:B1:BD_GA2:BD_DynamicSolutionGA2:Solution does not…
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Dear all,
TetGen version 1.6.0 has been released on August 31, 2020 which once again introduces a substantial boost to the quality of the generated tetrahedralizations (see http://wias-berlin.de/so…
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Hi all !
VEGA does not support damping or stress in the NASTRAN CELAS2 command, and I need it for an example i want to convert to Systus.
Judging by the documentation, the stress coefficient S i…
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Error message is pretty hopeless if you don't know what's happening under the hood:
```
Error in solve.default(t(X) %*% X) :
Lapack routine dgesv: system is exactly singular: U[5,5] = 0
```
We ne…
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***I am moving this issue over verbatim from the Fortran svFSI repository***
I am developing a model for the perfusion of blood within a tissue volume. The model is a single-compartment Darcy model…
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Hi,
I know that the graph will be optimized when loop closure occurs, but I still don't understand why loop closure can reduce the uncertainty. Is there any formular that can help me?
When optimiz…