Poisson's ratio

Hi Hicham,
it depends on your test. Basicly if you know strain and stress components
(and you know your material is elastic), you can compute it according to
basic elasticity equations.
cheers
Jan

2014-05-20 14:51 GMT+02:00 Hicham BENNIOU <
<email address hidden>>:

> New question #248983 on Yade:
> https://answers.launchpad.net/yade/+question/248983
>
> Hi all,
>
> Pretty straightforward question here :
> Is there a way to compute poisson's ratio while doing a test so I can
> compare it to the input poisson's ratio ? Or do I have to code it using C++
> / in the py script ?
>
> Hicham
>
>
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>"while doing a test"

If you mean "using a test", the answer is yes: run a triaxial + see Jan's answer.
If you mean "while doing my test", what is your test?

Hi Jan and Bruno,

>> If you mean "while doing my test", what is your test?

Uniaxial test for the moment, cylindrical sample, my contact law.

>> you can compute it according to basic elasticity equations.

Actually I was thinking of modifying UniaxialStrainer to compute real Poisson's ratio more accurately. But before doing so, I thought I could ask if there is an existing tool.

Hicham

Hi Hicham,

I think that running uniaxial strain test using a triaxial engine (ideally
periodic) is the best choice.

UniaxialStrainer is strainer for uniaxial stress and if you could define
lateral strain, you can get poisson's ratio directly, but I haven't tried
that..

cheers
Jan

2014-05-20 15:21 GMT+02:00 Hicham BENNIOU <
<email address hidden>>:

> Question #248983 on Yade changed:
> https://answers.launchpad.net/yade/+question/248983
>
> Status: Answered => Open
>
> Hicham BENNIOU is still having a problem:
> Hi Jan and Bruno,
>
> >> If you mean "while doing my test", what is your test?
>
> Uniaxial test for the moment, cylindrical sample, my contact law.
>
> >> you can compute it according to basic elasticity equations.
>
> Actually I was thinking of modifying UniaxialStrainer to compute real
> Poisson's ratio more accurately. But before doing so, I thought I could
> ask if there is an existing tool.
>
> Hicham
>
> --
> You received this question notification because you are a member of
> yade-users, which is an answer contact for Yade.
>
> _______________________________________________
> Mailing list: https://launchpad.net/~yade-users
> Post to : <email address hidden>
> Unsubscribe : https://launchpad.net/~yade-users
> More help : https://help.launchpad.net/ListHelp
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Thanks everyone,
Cheers,
Hicham