It's just a matter of inverting the direction vector in GAP element definition. For now, it can be done in the exported input file but it might be implemented in the future versions.
I have a problem with the convergence in the case of the gap element. It seems to me that the nodes where you take the resultant stress reach a singularity. The smaller the elements the higher the stresses I get. Is that OK?
There can potentially be some stress peaks at the nodes where GAP elements are attached so in some cases it might be better to check the results as close to them as possible (even at the nearby midside nodes) but not exactly at those hot spots.
Thanks. Bolt modeling was covered in Tutorial 34. I may show some pins or rivets in the future. The idea here was to focus on the lug itself and model the pin indirectly.
Great video! By the way, you show how you import the geometry from a SolidWorks file, but then you say how you sliced the geometry with FreeCAD. Is there a way to export from FreeCAD to SolidWorks? It'd be nice if you could show in some future video how to export complex geometries (multiple materials, slices, etc.) from FreeCAD to be imported into PrePoMax. Thanks!
I didn’t use SolidWorks for this at all. It’s just that my computer recognizes STEP files as SolidWorks files. I exported the STEP geometry from FreeCAD and imported it to PrePoMax.
FreeCAD can export step files that can be read by almost any modelling software, however, the design tree will be lost in the process, and it will require direct editing the solid part to modify it.
Thanks. In CalculiX, GAPUNI elements (used for compression only support) are defined by two nodes and a vector specifying the direction in which the elements (nonlinear springs like those used for contact) act. PrePoMax takes care of this also for curved faces. It can even offset the second node for visualization purposes.
Great video. I love how well prepomax meshes things. I have questions, but ill give you a few days off hahaha. I love learning new things and applying it to my schooling
@@LT72884 Sure. Especially since usually some screenshots or model files have to be shared to provide help. And the discussions are better organized on the forums.
Perfect this lecture sir
So weldon this lecture is very nice sir
Since we already have the compression-only function, i think it would be a good idea to have the tension-only in the next version as well.😉
It's just a matter of inverting the direction vector in GAP element definition. For now, it can be done in the exported input file but it might be implemented in the future versions.
I have a problem with the convergence in the case of the gap element. It seems to me that the nodes where you take the resultant stress reach a singularity. The smaller the elements the higher the stresses I get. Is that OK?
There can potentially be some stress peaks at the nodes where GAP elements are attached so in some cases it might be better to check the results as close to them as possible (even at the nearby midside nodes) but not exactly at those hot spots.
Great video, as always!
Could you explain some bolt or pin joint modeling in future videos?
Any guidance would be fantastic. Thanks.
Thanks. Bolt modeling was covered in Tutorial 34. I may show some pins or rivets in the future. The idea here was to focus on the lug itself and model the pin indirectly.
Great video! By the way, you show how you import the geometry from a SolidWorks file, but then you say how you sliced the geometry with FreeCAD. Is there a way to export from FreeCAD to SolidWorks? It'd be nice if you could show in some future video how to export complex geometries (multiple materials, slices, etc.) from FreeCAD to be imported into PrePoMax. Thanks!
I didn’t use SolidWorks for this at all. It’s just that my computer recognizes STEP files as SolidWorks files. I exported the STEP geometry from FreeCAD and imported it to PrePoMax.
FreeCAD can export step files that can be read by almost any modelling software, however, the design tree will be lost in the process, and it will require direct editing the solid part to modify it.
Very nice video, compression only applies to the negative of the normal from the face then?
Thanks. In CalculiX, GAPUNI elements (used for compression only support) are defined by two nodes and a vector specifying the direction in which the elements (nonlinear springs like those used for contact) act. PrePoMax takes care of this also for curved faces. It can even offset the second node for visualization purposes.
Great video. I love how well prepomax meshes things. I have questions, but ill give you a few days off hahaha.
I love learning new things and applying it to my schooling
@@LT72884 It would be better to continue the discussion on the FreeCAD forum, CZcams comments don’t work well for that.
@@FEAnalyst oh for sure. I dont like asking questions on CZcams if i can help it. The forums are far better.
@@LT72884 Sure. Especially since usually some screenshots or model files have to be shared to provide help. And the discussions are better organized on the forums.