Hello everyone,
Attached is a 3D model, it is an assembly made by the SOLIDWORKS software for the purpose of improvement work.
Is an assembly of two support tables for molded tools, the old tables are solid aluminum alloy tables. Seen deformation on tables under fatigue stress has a molded tool load of about 2 ton and has a temperature of 80 degrees.
Today I thought about a modification on the model, I thought about a change of material for why not hard steel.
Provided I keep the same thickness of the plates.
Everyone knows that the density of steel is equal to about 3 times the density of aluminum, given the stress of the weight I removed material from the tables which are made of steel in order to reduce the weight.
Means: the weight of the aluminium tables = the weight of the steel tables with a material removal.
I ask your gentleman or madam to help me with the choice of steel.
Thank you so much.
mon_modifications.rar
Hello
Your question does not duplicate with: https://www.lynkoa.com/forum/solidworks/jai-besoin-des-conseilles-pour-une-bonne-simulation-de-cette-pi%C3%A8ce?
I still don't have a recent version of SolidWorks so without images, some general advice.
Even though the weight of steel is greater than aluminum, its Young's modulus is larger (about 3 times more). So a priori a lower thickness of steel can be more rigid than aluminum.
You need to define the current critical case(s) (where is the support surface of the load, its shape) to simulate the deformation of your system. (any steel is ok for the simulation since we use E and not Re for the deformations).
Once your strain is suitable, look at the maximum stress and choose a common structural steel (S.. or E.. with the number after which corresponds to Re the yield strength) with a safety factor. For any other steel you will have to check if there is any processing to get the Re from the database.
To go further, you can define an accidental critical loading case (e.g. reduced bearing surface of the load) to check the resistance
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Good evening adel.brahimi
I agree with the remark of maldoror (whom I salute).
What is the point of opening several topics while not taking into account what we have told you to send us your files.
@tous
When you see the file: because the little I saw on the file part is surprising, to say the least. It is nothing more and no less than two 2 cm thick plates with large rectangular holes.
These plates are spaced by square pieces (mechanically welded with gussets) with an interlocking by a finger. These square spacers also allow them to be centered on each other.
My opinion (a bit clear-cut for once) This is certainly not a subject for simulation: but it would be a real subject to re-design it totally and above all correctly.
When I see the model I have hair growing in my head and the solution is certainly not to change an aluminum sheet by the same one in HARD steel (which is different from soft steel as everyone knows ;-) ) because it won't change much to the basic problem which is the initial design.
But to make a new design: it would be necessary to have the specifications that would define exactly the conditions of movement of the molds (a ton cannot be improvised) on the upper plates and the conditions of movement of the upper plate vis-à-vis the lower plate.
For the record , our forum is there to help with the features of SolidWorks, from time to time to give an opinion on a design: but certainly not to redo design.
Kind regards
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