Hello, I would like to know how to estimate the clipping and unclipping effort with solidworks premium simulation.
I have parts with clips for pipes and I managed to simulate clipping and unclipping (in non-linear). To do this, I made non-deformable tubes to which I impose a movement until I clip or unclip the part. This gives me, for example, the Von Mises constraint in my plastic part, but I would now like to find a way to know the clipping and unclipping forces that are necessary to make this movement.
Basically, from what force does my tube clip and at what force it unclips. Anyone have any advice for doing this kind of simulation?
clippage.jpg
Good evening Isatis
A friendly remark ;-) The term used is clipping and not clipping but hey we understand what you want to do.
This seems to me to be possible and relatively easy, even in static.
It is necessary to define zones with the separation lines at the same time: on the part of the tube subject to friction and also on the 45° part which serves as an inlet guide.
On the other hand, the clipping force will not be the same as the unclipping force. You will therefore have to do two different simulations depending on the in or out.
This will give you the value by a pull in the radial direction: which means that no leverage will be taken into account. In other words, the simulation will only give you the effort to clip and the pulling effort needed to unclip.
Small note : I don't know if you can still modify the top clips and part of the bottom one because the ribs are not very well placed on one part. If it's a single clipping it's fine, but if you do successive clippings and unclippings, or even frequent, to very frequent; You will have an excess of matting and a risk of breakage on two lips
If you can post your piece, I could take a closer look because I only have the front view.
I mentioned the separation lines at the beginning of the post and in case you don't know this feature, I invite you to look at a tutorial I made for the forum.
https://www.lynkoa.com/contenu/les-lignes-de-s%C3%A9paration-1
And you also have a concrete application of the use of separator lines in this other tutorial made in the process.
Kind regards
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First of all, thank you for your first answer (and I note the term clipping ^^)
Here is a file of one of the pieces on which I have to do this type of study.
For your information, the rods that clip on are made of steel (and can be considered non-deformable), the part in HDPE.
The static calculation does not work because the part undergoes large displacements.
What I'm looking for is not to know the Von constraint put in the plastic part but to calculate the forces (in N) to clip and unclip the rod. I can simulate the movement movements and see the deformation and the Von stress put in the plastic part but I don't know how to recover the forces that must be exerted on the rods to achieve these movements.
For information I am in SW 2018 SP5
As for your other comments:
-I understand that it takes 2 simulations for clipping and unclipping and that the efforts will not be the same.
-These are clippings and unclippings that will probably take place less than 10 times in the life of the room.
-For the separation lines I know this function ;).
Thank you in advance for your feedback.
bracket_calcul.step
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Hello
I think that in statics large displacements are not a problem as long as you do the configuration well by giving the limits of the displacement. Especially by checking that the part is blocked in all directions because these are often where there are big displacements that in fact are not (they are only configuration errors by a badly blocked part and it is frequent on this forum and elsewhere)
In addition, in simulation, you can work on half of a clip and even on a slice of the piece.
Von Mises is only there for us, indicate the yield strength (as usual), on the other hand the force is not given by the simulation but deduced because it corresponds to the force that you gradually put in the Radial direction and this until the opening deviation of the compliant system is equal to the diameter of the tube.
It has not escaped you ;-) ;-) ;-) that the total displacement is less than the radius of the metal tubes.
I can't do anything with the STEP part! can you post your SLDPRT parts and if possible the ASM with the cylindrical parts and especially with the elements that you used to make your simulation. To do this, do File==>pack-and-go==> specifying to attach the results of the simulation.
If you cannot reach the DSA for some reason, attach at least all the individual documents involved.
Kind regards
PS: as I don't know you, ;-) it's possible that I'll say things that you know perfectly well but if you want help then let's continue you never know ;-) ;-) ;-) it seems that there is always more in two well-made heads than in one. It's worth checking out this popular saying.
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I sent you the files in PM ;)
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D'acc I look and I come back to you ;-)
Kind regards