Hi all
As part of a project, I have to use a 952*680 plate with a thickness of 5mm. This plate is held on a 15mm length at each end (see drawing) and is subject only to its weight.
I would like to know which materials would flex the least for these dimensions and also know the deflection for these materials.
Would anyone be able to do a simulation (CATIA, Abaqus...) to find the right materials?
Thank you
Hello
For the arrow; If there is no load on it and given the dimensions it will be zero and as for the least reflective material I think you should turn to the Corten. It is a material that oxidizes only on the surface without continuing any reflection.
See link below:
Hello
It all depends on the type of material used, if you take an elastomer with dimensions like those indicated, it is possible that there is some bending (it's even safe).
Try the Rdm6 software, it is free, easy to use and allows you to obtain correct values, watch videos to get an overview.
@ ac Cobra I don't understand why?
You're talking about non-reflective materials
Did I miss something in the statement of the request?
It seems to me that this is what material would flex the least with given dim and a 5mm ep?
One given that has not been defined is in which environment the dilation
so the support of the game for this so-called positive or negative dilation
Stability of supports (booms)
so the answers are already completely random
Carbon, why not
See this link
http://www.cad22.com/Actualite/12-15-ID-Composite-technique.pdf
@+ ;-)
Yes, I'm talking about bending in my problem.
I need to find materials with minimal flex for the dimensions I have given. I forgot to mention that the desired material does not have to be magnetic.
The brackets are stable and there is a slightly positive clearance between the plate and its brackets.
@a.leblanc I think Rdm6 only works for bending calculations on beams, right?
Wow, I just reread the question... I thought I read "the materials that would reflect the least"... DSL is Sunday and my brain is still in weekend mode...
well a carbon plate
I put a link in my previous answer
On request you will have the plate for the right dimensions
@+ :-)
I agree with gt22: a carbon plate, 5mm of carbon you can go before it flexes!!
but without going to these extremes even a Fiberglass plate would be enough I think. I can try to do the math
being in the dark @ Ogrin
I gave this type of material as the default
that is rot-proof
and a resistance to flexibility that is foolproof, especially through its mass and the effort carried
and type of design
and of course its plot
@+ ;-)
Hello
Depending on your needs, I think Ogrim is right.
A plate well loaded with fiber, should not move.
Especially if there's nothing on it
tinted, you can give it any appearance.
Hello
For simple calculations of this kind, I recommend the RDM version 6 software published by the IUT Le Mans.
http://iut.univ-lemans.fr/ydlogi/rdm_version_6.html
You will find the case that interests you, namely the bending of a beam embedded at its two ends.
You enter your dimensions, the characteristics of the material and the software gives you the distribution of the stresses and, in the case you are interested in, the deflection.
It's very simple and very practical for design assistance!
I found this material: https://www.leroymerlin.fr/v3/p/produits/panneau-fibre-composite-teinte-masse-naturel-ep-5-mm-x-l-250-x-l-122-cm-e1400515261
Could this also be suitable (at the dimensions 952*680 of course)? Could someone calculate the deflection? I ask you the question because such a plate would be less expensive than carbon. In addition, I believe that carbon is diamagnetic, but I need a material that promotes magnetic interactions between 2 magnets for example.
No one will be able to do a simulation without having the product references
among other things, the nature of matter
Fiber composite board means nothing
so you won't have a viable answer
@+ ;-)
As gt22 says, if you don't know what sampling is there, you can't calculate anything "precise".
I can offer you a sample for a fiberglass sheet and give you an estimate of the price but just if you consider an hour of labor, we will be more expensive than something on the market.
Is it important that the thickness is calibrated to the tenth of a millimeter?
I'll watch tonight,
I asked about the composition of the material https://www.leroymerlin.fr/v3/p/produits/panneau-fibre-composite-teinte-masse-naturel-ep-5-mm-x-l-250-x-l-122-cm-e1400515261
These plates are made of 35% plant fibers, 45% polymers and 25% additives.
Generally, composites have good flexural strength I believe.
Is the thickness of 5mm really necessary?
Other material ideas:
- window glass;
- the honeycomb sign.
Like cellular polycarbonate?
I would like to point out that I need a perfectly flat and smooth surface (without bumps).
Hello
There is a CES-EDUPACK software where you list your requirements and it gradually removes materials from the list and when your search is complete you are left with only 3 or 5 materials suitable for the situation. We use it at the CFAI but I don't know how to download it outside of schools.
A +
here
http://www.cadware-education.fr/education/produits-education/ces-edupack
@+
Knowing that perfection does not exist, what do you call perfectly flat and smooth.
Flatness is a geometric characteristic, "lissicity" is what is called a surface finish.
Do these characteristics apply to the 2 sides of the plate?
In order to be able to advise you better, it would be better to explain your problem to us by indicating what is imperative. This would prevent you from starting with preconceived ideas.