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how to set imperfection

how to set imperfection

how to set imperfection

(OP)
Hi all,
I am trying to solve a two-dimensional shear band computations problem using compression from a journal of T. Belytschko using ABAQUS cae. In the problem the initial imperfection was included in the form of a reduction in the yield strength.

sigma(y)=sigmab(y)[1-a*exp{-(x-x0)^2-(y-y0)^2}/r0^2]

sigmab=460MPa
a = 0.2
r0=0.1mm
x0=0, y0=0

How to set the imperfection in abaqus cae?

Thanking in advance,
Imran

RE: how to set imperfection

(OP)
Please give some suggestions how i set the imperfection

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