kuhl

Ahh, thanks for the explanation, that helps!

in Quasi static convergence Comment by kuhl April 20

There is a section in the manual on contact stiffness. Not sure thats what you mean?

in Contact stiffness approximation Comment by kuhl April 17

Ok, thanks Victor!

in Element Stress with CCX Comment by kuhl April 1

In this example there should be no local bending due to Fy as it is split up into tension / compression in each weld. But I think you need to consider that Fx causes bending about the y axis which leads to a linear distribution of Fz and (if Fy and …

in Extraction of section forces in solid model Comment by kuhl March 18

Hello Jan, I'm not sure that I fully understand your model setup and if there can be any local bending in the weld. If there can be, I don't think looking at the sum of the forces within the weld is sufficiently accurate. In a weld modeled with so…

in Extraction of section forces in solid model Comment by kuhl March 17

I had another look at it. It seems as though the block is pulled inwards while the rod is pulled outwards, independet of the initial gap (1: slave pojected onto master, 2: 0,1mm gap, 2: 0,1mm interference) For the rectangluar rod, the slave node i…

in CXX Contact Comment by kuhl March 17

Thanks for the advice. From the information in the manual I thought that interferences or gaps are dealt with without causing stress, because it says: "Elastic, CCX solver: This creates elastic springs between the surfaces. As with Tie, the no…

in CXX Contact Comment by kuhl March 7

maybe with dummy beams and a force pair on those dummy beams?

in Distributed torsion moment loading Comment by kuhl March 6

Thanks for checking! The model is just a random example without a use case apart from me unterstanding how it works. Tilting the base was for me to try how translation the ROT NODE leads to rotation of the rigid body. Stiffness was still on a h…

in Multibody parts connection Comment by kuhl February 24

Thats my very simple take on it, though I'm not completely shure it is done right, I'm just starting to play around with custom cards: The model is a one element cube. The top face is fixed. On the bottom face there is a compression only support. T…

in Multibody parts connection Comment by kuhl February 24

Hi Disla, thanks for the explanation. Another drawback of the idea with spider gap elements would be, I think, that the element orientation of the gap elements does not change with their rotation. So if large rotations happen, it would probably los…

in Multibody parts connection Comment by kuhl February 24

Would that be the same as using "spider-gap-elements" to connect all nodes of the hole with a central node which is the end node of the spring?

in Multibody parts connection Comment by kuhl February 23

The rod-side works quite nicely with moving loads now (heat flux, convection and radiation) For the block I'll try the forced concetion / fluid network element.

in Thermal transient analysis with moving parts Comment by kuhl February 20

Hi, thanks for the hint, I'll have a Look at it.

in Thermal transient analysis with moving parts Comment by kuhl February 19

maybe I am on to something by moving the heat source (heat flux) using unittriangle function and not considering the block for now...

in Thermal transient analysis with moving parts Comment by kuhl February 19

Thanks, Victor!

in Thermal Stress in Shells using Laminate Material Comment by kuhl February 16

I did some testing on a 100 mm cube: left: shell model, right: solid model. Element orientation identical to global coordinates.DeltaT=-100K Shell material, one layer Solid material So far, no thermal expansion defined for shells, results as e…

in Thermal Stress in Shells using Laminate Material Comment by kuhl February 16

Yes, that would be an improvement.

in Element Orientation in Solids Comment by kuhl February 13

Yes, easier for sure. But thats only possible if the u-axis is normal the the "surface", or am I missing something? When using orthotropic material (composites), usually u-axis is fiber direction, v-axis is transverse direction an w-axis is thi…

in Element Orientation in Solids Comment by kuhl February 13

Hey Disla, thanks for the heads-up! Works pretty well for a cylinder, also if it is not centered at zero. So in theory, it should work for all shapes that can be described by a function, although it might get a bit complicated / impractical with…

in Element Orientation in Solids Comment by kuhl February 13

Thanks for the hint. That might be helpful in some case, I'll try that.

in Element Orientation in Solids Comment by kuhl February 12

ok, so I tried again with the parameter set to 1000 GB and it finished without error but of course again no faster. The sky is the limit.