Good evening everyone,
I have a non-technical question , but earlier in the preparation phase for the numerical simulation, it was the selection of the material.
Well, I did some research on the famous CES EduPack software but I never managed to use it either online or in demo version, so I'm really stuck to follow the progress of my project that I had already posted on this forum previously (it's the hinge tooling).
I chose this software because it is based on the Ashby diagram and I have seen it already in my studies.
Yes, there is a prediction at the beginning of the class of the material to be used, but there are conditions or constraints that change everything.
So could you tell me the program or the method of selecting materials.
Kind regards
Hello @firasschafai ;-)
Something escapes me!
For the pivotal project, it is not you who defines the material of each hinge but the manufacturer for which you are doing the study.
Just so I understand !
Why use a software for choosing materials based on criteria: when you say that it is "preparatory to numerical simulation".
If you know the four main categories of materials typically used for hinges, solidworks simulation is sufficient.
Knowing also that you are in charge of doing the test bench and not of predicting the deformation of the hinges (even if the simulation will give you this additional information if you wish).
If you want to do the simulation of deformations without a test bench, SW simulation will do this very well but that's not the purpose of what I understood in the other post' :)
Kind regards
PS: Do you have the instructions for use in French or Tunisian of the CES EduPack software?
Hello @Zozo_mp
I will say that I asked the question incorrectly.
At this stage of my duty it is to choose the material of all the tooling and not the hinges, because it has already been determined by the manufacturer, so after this link with this project with the industry and my engineering school it is therefore planned to manufacture all the tooling at the school because the tests will be carried out on the traction machine of the ENIM.
Well frankly, I haven't completely finished designing the tooling perfectly but now I have 75% of the whole, and I explain.
I chose to design a "master tool" for all the tests and all the hinges, and other "add-ons" that are adaptable to a certain hinge and here the hard work on my side, but I have achieved the essential by grouping some hinges according to the criteria that you already determine previously such as the spacing between the holes of the assembly, the diameter of these holes...
Therefore, as I indicated at the beginning of this post, I will choose the appropriate material to do the numerical simulation of the strength of the tooling and not the hinges.
Yes, I know that this is not the time to shoot a numerical simulation model without completely finalizing the design, but in my opinion, since the work on the grouping of the hinges is definitely boring and I am talking about more than 200 models of the hinges, I activate the parallel work to touch the gray areas and above all to avoid stress, so a little design, a little research towards simulation ;-)
Well for CES EduPack I have some resources that are similar to this software where using the Ashby diagram.
In addition, this software is based on selection criteria, and I have to carefully select the material, because it is based on very severe constraints such as its strength; Must be rigid and hard enough to transmit all the test force on the hinge, also fatigue as more than 600 tests will be performed (200 hinges x 3 types of tests).
Kind regards
PS: In my opinion, I will use Abaqus as a numerical simulation tool despite the fact that the case is static, but I see Abaqus is more powerful than SolidWorks.
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Hello @firasschafai
Thank you for these clarifications, I'm reassured about my mental health ;-)
Two solutions:
Or it is your school that requires you to make a choice of subject with the software!
Or you are the one who has chosen to use this software.
If it is you and you alone, then I can tell you that it will not work: here are the reasons.
After 50 years of experience I noticed that all tools of this type without exception (except for very special conditions related to electrical tests or ATEX atmosphere) are made of steel.
It is ordinary steel, called "steel for shoeing donkeys" when it is solid blocks, or it is hardened steel (more or less hard).
As I consider that now you are experienced: only do the following calculation with S235 steel. Take a 50mm x 5Ox 200 square bar and try to deform it, you will need 20 tons in the axial direction and at least 800 kilos in the radial direction. to have a little bit of deformation.
For example, if your tools consist of two cubic blocks of 200 mm cubed, no hinge attached to each block will resist, I can guarantee you.
No need to do any simulation, an S235 resists 235 MPa/mm² in relation to the volume (Formerly E24- A37. We can take at the limit a 9OO MPa ;-)
So for the calculation note it is done in two minutes on a corner of the table ;-) ;-)
I can't wait to see the solutions you have chosen to make the tooling move in all directions, Axial radial and rotation in each position.
See you soon and good luck!
The final stretch is the one that requires the most energy and resistance, the Marathoners will tell you ;-)
Kind regards
Hello @Zozo_mp
This is the second case, where I chose the software myself, but only to justify because there is a methodology that must be followed to verify and validate the final solution with evidence, it is simply to convince the other person, of the solution and here are the proofs ;-)
Absolutely, and I agree with you, steel will be used for example with the treated C45, but just as I said, it takes a lot of effort to convince others.
I don't speak expertly, but this is my last year, earlier in the last few months of my engineering training.
Kind regards
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Hello Firass
I understand better the process to convince people of the merits of your choices.
You're not far from the goal ;-)
Kind regards