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Shear test data  


doghak
Posts: 13
(@doghak)
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Joined: 7 years ago

Hello all,

I have test results (force, displacement) form a test like this one:

[url] [/url]

How can I get the true stress/strain?

I go to eng. shear strains of 200% and it seems the eng vs true stress is giving weird results after 150% or so.

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jamal.mousavi
Posts: 8
(@jamal.mousavi)
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Joined: 5 years ago

[QUOTE=Settler,13456]Hello all,

I have test results (force, displacement) form a test like this one:

[url] [/url]

How can I get the true stress/strain?

I go to eng. shear strains of 200% and it seems the eng vs true stress is giving weird results after 150% or so.[/QUOTE]

Hello,

I have test results, too. My test bench same as below link. [url] [/url]

My question is same with yours. We can find nominal stresses and strains but about true stresses we do not have any thing. Can anyone help us?

Thanks

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doghak
Posts: 13
(@doghak)
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Joined: 7 years ago

My biggest problems start when I want to incorporate test data with 200% shear strain.

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jamal.mousavi
Posts: 8
(@jamal.mousavi)
Active Member
Joined: 5 years ago

[QUOTE=Settler,13458]My biggest problems start when I want to incorporate test data with 200% shear strain.[/QUOTE]

What about your thickness? My height is 80mm and thickness is 2mm. My max strain aprox. 90%.

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Jorgen
Posts: 3881
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Why do you need true stresses?

You can calibrate directly to the engineering shear strain-strain using [URL= http://www.veryst.com/what-we-offer/polymer-modeling]MCalibration[/URL].

-Jorgen

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