Re: Re: Cohesion yield stress versus Absolute plastic strain (Slope Modelling)
2007-03-11 15:08:27 GMT
Dear Pinar :
so , youshould change cohesion base on plastic strain and it needs that you do some triaxil tests to know this behaviour or as you suggest follow what literature says as a firste estimate , sorry i never tried it before
pinar_wanstreet <pinar_wanstreet <at> yahoo.com> wrote:
Thank you for your respond.
I am not keeping the cohesion constant. The value of the cohesion
will be changing with respect to the angle of friction. I am trying
to apply the shear strength reduction technique in order to obtain
the safety factor of a slope.
--- In ABAQUS <at> yahoogroups.com, manoochehr salehabadi
<m_salehabadi <at> ...> wrote:
> Dear Pinar:
> are you going to keep cohesion constant during your modelling ?
i am using Mohr-Coulomb for my modelling for rock and i have just
constant cohesion base on literature what i am going to do is keep
cohesion constant and change plastic strain as following:
> C Strain
> 1.7 MP 0.0001
> 1.7 MP 0.001
> 1.7 MP 0.01
> 1.7 MP 1
> i hope that it works
> pinar_wanstreet <pinar_wanstreet <at> ...> wrote:
> I am fairly new to Abaqus. I am searching for any kind of advise
> to adjust these two (cohesion yield stress and absolute plastic
> for slope stability problems.
> Some sources suggest to add 3% of the young's modulus value to
> cohesion value. Is that reasonable?
> For instance: cohesion=c, and Young's Modulus= E
> Cohesion Yield Stress Abs Plastic Strain
> c 0
> c+(3%E) 1
> Thank you for any respond in advance,
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