iMechanica - stress update
https://imechanica.org/taxonomy/term/12349
enStress update scheme in platicity
https://imechanica.org/node/22968
<div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/169">Plasticity</a></div><div class="field-item odd"><a href="/taxonomy/term/12349">stress update</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>Hi everybody,</p>
<p>I am studying the plastic deformation of sheet metal. Recently, I study about stress update scheme in finite element analysis using return mapping method. For this problem, we can calculate the increment of stress components, Δσ for a given value of strain components Δε using elastic predictor - plastic correct scheme. Since Δε = Δεe +Δεp, first, we assume Δεp=0 and check the yield criterion. Then, we find Δεp to satisfy the yield criterion as well as the consistent condition.</p>
<p>However, I have a question as the follows</p>
<p>At a stress stage, if we knew the value of the next plastic strain increment, Δεp Can we calculate the stress increment, Δσ?</p>
<p> </p>
<p>I try to answer this question for a couple of days. But, it seems to be out of my knowledge. I hope some bodies can help me find the solution.</p>
<p>Any comment or suggestion is really appreciated.</p>
<p>Thank you for your reading.</p>
<p> </p>
<p> </p>
</div></div></div>Fri, 28 Dec 2018 06:49:59 +0000tuanpham22968 at https://imechanica.orghttps://imechanica.org/node/22968#commentshttps://imechanica.org/crss/node/22968Error | iMechanica