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Re: [Question #172107]: Difference between volumetric strains evaluated by strains and void ratio

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From: jduriez <question172107@xxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 26 Sep 2011 08:10:52 -0000
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Question #172107 on Yade changed:
https://answers.launchpad.net/yade/+question/172107

jduriez posted a new comment:
> @ Jduriez,
I think, I didnt understand well what you mea by first order approximations

I meant that the (theoretical) equality dV/V0 = e11 + e22 + e33 is a
first order approximation for what concerns eii : product of eii are not
considered (neglected).

In your case your values of eii are probably too large indeed (mean
strain ~ 37% from what I can imagine from your evol = 1.1). 0.37 being
not so small comparing to 1, the first order approximation would not
hold.

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