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Thanks for your help.

So that means that the negative stress values (blue) in the picture are compressive stress?

Or expressed in another way:

What does the minus sign of a stress value mean?

1) direction of the stress vector in the coordinate system

2) compressive stress (negative value) in difference to tensile stress (positive value)

3) both

4) other


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Christoph Mannal
June 20, 2010 9:10am UTC

negative stress = compressive stress ?


Hello,

I have a simple question. When my value of normal stress is negative, is it then a compressive stress in general. So if it is positive, is it then tensile stress?
Or does the minus and plus just mean in which direction the stress vector is pointing?

Thanks and kind regards!

C. Mannal

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Ivar KJELBERG
Moderator
June 20, 2010 5:28pm UTC in response to Christoph Mannal

Re: negative stress = compressive stress ?

Hi

what if you try something like this (its V4, check that it's the same in V3.5)

Ivar

Attachments: StressSignTst.mph
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Ivar KJELBERG
Moderator
June 20, 2010 5:31pm UTC in response to Ivar KJELBERG

Re: negative stress = compressive stress ?

Hi
And here are the view (only that in V4 it's not easy to identify which legend corresponds to which graph, but as the countour is Von Mises and von Mises >0 you should be able to identify it still unambiguously)

Have fun Comsoling
Ivar

Attachments: StressSign.JPG