Compressive strength of aluminum
Compressive strength of aluminum
(OP)
A couple of questions here with the aim of evaulting FEA stress results.
Problem: A 6063-T52 aluminum tube is subjected to a clamping force that results in localized Von-Mises stress in excess of yield.
Questions:
1. Can anyone provide data on the compressive strength of the above mentioned material?
2. Is there a relationship or rule of thumb relative to Ultimate or yield strength I can use?
Thank you
Problem: A 6063-T52 aluminum tube is subjected to a clamping force that results in localized Von-Mises stress in excess of yield.
Questions:
1. Can anyone provide data on the compressive strength of the above mentioned material?
2. Is there a relationship or rule of thumb relative to Ultimate or yield strength I can use?
Thank you





RE: Compressive strength of aluminum
If you are talking about localized force application (like from a fastener), then you need to consider the allowable surface pressure. There is not a lot of published data on this. A rule of thumb is the allowable surface pressure is approximately equal to the ultimate tensile strength.
Regards,
Cory
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.
RE: Compressive strength of aluminum
I am refering to local stress developed on the exterior surface of the tube as a result of a fastener nearby. The clamping action produces a local area with stress as high as 46Ksi. The Ultimate tensile for the material is about 25Ksi. I beleieve there is potentail to permenantly deform and or crack the tube with the current design and I wanted to make sure I understand the problem before I go waving the white flag.
thanks
RE: Compressive strength of aluminum
Regards,
Cory
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.
RE: Compressive strength of aluminum
Please pardon and correct me if I am wrong. I faintly remember that ratio of compression strength to tensile strength is about 3:1 for some specific L/D ratio and considering friction effect at the ends during compression testing.
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RE: Compressive strength of aluminum
You are right concerning plane strain indentation: initiation of yielding occurs when the surface pressure is 3 times the yield stress. However, a bolted joint has a hole in it, so the allowable surface pressure is not the same as for plane strain indentation.
Regards,
Cory
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.