Problem with Solidworks Simulating a sheet metal with a reinforcement

Simulation Generality
13

Just to try to answer this question:
"By the way, it's consistent 4mm of boom on a 1mm thick sheet metal with 10kg on a 100mm disc?) "

What is the thickness of the sheet?

Is the loading centered?

14

Hello

Do you have the right Young's module for your components?

15

Have you looked at the links I posted to you, the solution is probably in these links

watch from the 55 minutes it explains the type of contact and shows and demonstrates the why and how 

All you have to do is manually create a solidarity contact to read, listen and see

@+

16

The thickness is given in my post, i.e. 1mm ;).

The load is centered in width at 1300mm high (on a 2190mm sheet). The material used is galvanized steel taken directly from the solidworks library.

 

GT22 I looked at your links but I can't find a video though.

I passed my reinforcement in volume, that's calculating, I'm at 1h15 and 27% progress.

17

https://www.youtube.com/watch?v=0oBoI1Q9m3I

watch from the 55 minutes it explains the type of contact and shows and demonstrates the why and how 

18

Thank you GT22!!

In fact, thanks to your video, I created a contact between people MANUALLY, whereas I did it automatically before. So the calculation worked in 10 seconds (I cancelled the one before because 2 hours to do 27% is not possible).

Well on the other hand the result is not coherent at all! 15mm displacement!! That's impossible.

:/


capture_resultat_poutre.jpg
19

See if all the parameters are good

mesh/thickness/material/your contacts etc.....

 

20

I have a doubt about this connection, what do the brown balls at the top and bottom mean? I don't have a connection here normally.


capture_connexion.jpg
21

with Simu Xpress, by blocking (Xpress only knows how to totally block one side) the 4 faces, I have 0.57 of displacement.

Attached is my SW15 format piece


test_tole.sldprt
22

Your result is very decent!

I have a 30mm crease at 90° on the 4 sides of the sheet, I don't think it helps.

I don't see anything that could explain my 13mm

23

0.57 doesn't seem like much, doesn't it? I can't open your file, I'm in SW14

I have a 30mm crease at 90° on the 4 sides of the sheet, I don't think it helps.

I don't see anything that could explain my 13mm

 

EDIT: Haaa I have 1.2mm of displacement with the reinforcement and switching to an alloy steel. Could someone give me the values he has on his galvanized steel? Well, that doesn't tell me how you get to 0.57 stefbeno.

EDIT2: I get to 4.2mm without reinforcement, which seems rather coherent to me I think?

24

Hello

I'd like to try, but I don't have the simulation modules at my job. On the other hand, I know a small software called RDM6 which is free, and which helps very well for beam theory.

3 Likes
25

here is the SW14 part

The boundary conditions play a huge role.

Can you put your piece online?

Here are my material parameters (I noticed that apart from stainless steel or a few special steels, they are generally the same)


test_tole.sldprt
26

RDM6 is awesome, super simplified, and easy to use.

3 Likes
27

Hello

@ stefbeno

The displacements obtained in your calculation model (0.57mm) do not seem to me to be really  representative of reality. Indeed, the mesh (volume) is composed of a single element in the thickness (very thin, by the way; 1mm). To have a more realistic representation, you would have to make a shell mesh or integrate 2 or even 3 elements in the thickness of the sheet metal for a 3D mesh. With a thickness of 1mm, this will represent a relatively long meshing and calculation time... So I suggest starting with a shell mesh. For information, I find a displacement of 24mm with a force of 100N exerced on the sheet metal in 1mm thickness...

(in attachment a small document that illustrates this)

 

@ maximus

I suggest you put your calculation model online, so I can see if I find an inconsistency, especially at the level of contacts. In any case, the application of stainless steel, non-alloy steel or galvanized steel will have very little influence on the deformation... Since the density and modulus of elasticity are practically the same, the behavior will be almost identical.

 

Rarka

 


doc2.pdf
1 Like
28

After several tries, here's what I get, 1.4mm of displacement seems pretty good to me.

Attached is my model for those who want to try


00004667_simulation_effort.sldprt
1 Like
29

@Rarka: that's the problem with Xpress on this kind of case (very thin part), while I had forced a fine mesh...

30

Hello

This result is indeed acceptable.

I advise you to use a standard mesh rather than a curvature-based one to avoid too many distorted elements. But the result shouldn't be too different.

Rarka

2 Likes
31

Hi everyone,

I'm going to stay on my 1.4mm of displacement, it's fine with me.

Thank you again for your precious help.

32

tag the best answer @ maximus

@+