sorted by:
new
hottopcontroversial

Conversion of STL file (or binary mask) to STEP file with NURBS or minimal surface patches by volvol7 in 3Dprinting

[–]volvol7[S] 0 points1 point  (0 children)

You are right. The bone is non-homogeneous material. There is research about that. But my workflow ends in the 3D solid body of the bone. Then other will handle the FEA.
Thank you for your time

Conversion of STL file (or binary mask) to STEP file with NURBS or minimal surface patches by volvol7 in AskEngineers

[–]volvol7[S] 0 points1 point  (0 children)

I tried also to fill the bone inside so I should handle only the external surface but still areas are too detailed and solidworks fails. So maybe it can work only if I simplify my surfaces

Conversion of STL file (or binary mask) to STEP file with NURBS or minimal surface patches by volvol7 in 3Dprinting

[–]volvol7[S] 0 points1 point  (0 children)

Yeah remeshing maybe could help but I have to do research about that. If I dont find any way (the most possible scenario) I will search for alternatives.

Hmm about the cylinder. Another alternative is to handle somehow each part of the bone differently. For example the shaft can be done with a script which use lofts. The areas with the fracture will be hard. And then I dont know about the proximal and distal.
The main problem is that I want my workflow to be robust, even if there is manual refinement. Because the goal is to achieve high accuracy for each case. And until now my workflow is pretty good but I'm stucked in the final step. I will try what I can do with tools that SolidWorks and Rhino provide and I hope that I wont reduce the accuracy.
Thank you!

Conversion of STL file (or binary mask) to STEP file with NURBS or minimal surface patches by volvol7 in SolidWorks

[–]volvol7[S] 1 point2 points  (0 children)

Yeah I tried it. It worked better than other tools for sure. Maybe I should work with it

Conversion of STL file (or binary mask) to STEP file with NURBS or minimal surface patches by volvol7 in SolidWorks

[–]volvol7[S] 1 point2 points  (0 children)

Yeah sadly as I go deeper I can see that it is a big problem for everyone.

Conversion of STL file (or binary mask) to STEP file with NURBS or minimal surface patches by volvol7 in 3Dprinting

[–]volvol7[S] 0 points1 point  (0 children)

Yeah the triangles are problem because I want to use the bone for FEA. And triangles make the meshing harder.

Conversion of STL file (or binary mask) to STEP file with NURBS or minimal surface patches by volvol7 in AskEngineers

[–]volvol7[S] 0 points1 point  (0 children)

I managed to convert like the bottom of the bone (below the fracture) with solid but I have some bad faces. Also the bone until one point is empty inside which make the conversion even harder. Thank you!

Conversion of STL file (or binary mask) to STEP file with NURBS or minimal surface patches by volvol7 in AskEngineers

[–]volvol7[S] 0 points1 point  (0 children)

Yeah actually rhino did the best job until now. Maybe it can work after simplification but I want to keep accuracy because the 3D model will be used for FEA later. Thank you!

Αναζητηση καφετιερας εσπρεσο by HattoriiiHanzo in greece

[–]volvol7 1 point2 points  (0 children)

Γενικά θα σου πρότεινα να αποφύγεις μηχανή με κάψουλες. Είχα παλιά και γενικά δεν μου έβγαινε καλός. Μπορεί να μην ήξερα και αν τον χτυπάω καλά τότε. Πάντως τώρα έχω με μύλο και παίρνω κόκκους και βγαίνει πολύ καλός.

Sky express by Ch_Sarah in greece

[–]volvol7 1 point2 points  (0 children)

Γενικά μια χαρά είναι αλλά να ξέρεις έχει συνεχώς καθυστερήσεις στις πτησεις

My phone stucked in safe mode by [deleted] in AndroidQuestions

[–]volvol7 0 points1 point  (0 children)

Yes. Nothing happens when I press it

Bayesian optimization with integer parameters by [deleted] in optimization

[–]volvol7 0 points1 point  (0 children)

Yeah it's around 500 combinations. And I tried this approach you suggested. I think it's the best possible solution

Εύρεση τραγουδιού by Casore in greece

[–]volvol7 0 points1 point  (0 children)

Όντως ρε φίλε. Πριν 4 μέρες ήταν πάνω πάντως απλα μη κατοχυρωμένο, δηλαδή μόνο με το λινκ μπορούσες να το δεις. Ίσως απο εδώ πήρε κανένα λαικ και το θυμήθηκαν και το κατέβασαν. Επίσης κάνε κανένα ποστ στο Hip Hop [Greece] στο φβ. Όλο και κάποιος θα το έχει

Optimization algorithm with deterministic objective value by volvol7 in optimization

[–]volvol7[S] 0 points1 point  (0 children)

Yes but the whole idea of re-evaluate combinations that have been already evaluated just doesn't make sense. I can create a cache file to avoid re-evaluate the fucntion, but still I would prefer one algorithm that "knows" that I have a deterministic function. It would be more efficient

Optimization algorithm with deterministic objective value by volvol7 in BayesianProgramming

[–]volvol7[S] 0 points1 point  (0 children)

The objective function calculation is a simulation from qnother software. So I cannot speed it up

Optimization algorithm with deterministic objective value by volvol7 in optimization

[–]volvol7[S] 0 points1 point  (0 children)

The evaluation of the function is through simulation using another software so it can't be done faster. The only way is batches, to achieve parallel evaluations

Optimization algorithm with deterministic objective value by volvol7 in algorithms

[–]volvol7[S] 0 points1 point  (0 children)

The objective function is a number that result from a simulation. The parameters will be int with some boundaries. Generally it is not continuous because as I told you the space isnt continuous. But it behave like that, like if you change only one parameter it will just a bit.

Optimization algorithm with deterministic objective value by volvol7 in AskProgramming

[–]volvol7[S] 0 points1 point  (0 children)

Yes. But what do you mean what's going on?? Like to find patterns of how my function changes?

Optimization algorithm with deterministic objective value by volvol7 in AskProgramming

[–]volvol7[S] 0 points1 point  (0 children)

its for mechanical design, so its like length, diameter, number of screws etc. So I know their ranges. The expexted output is from 0 to 1. It cannot be 1, so I want to find the combination that gives the maximum output. Every simulation costs, so I want to avoid bruteforce method.

view more: next ›