iMechanica - Comments for "Is paper ductile?"
https://imechanica.org/node/11741
Comments for "Is paper ductile?"enPlasticity modeling
https://imechanica.org/comment/18111#comment-18111
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<p><em>In reply to <a href="https://imechanica.org/node/11741">Is paper ductile?</a></em></p>
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I do agree with you on the fact that paper material is not proper to be modeled with the use of classical plasticity theory. In fact the elastic-plastic material model described through equation 6 (which is the same as eq. 7, the yield function) is a direct relation between stress and plastic strain, when one considers the simplest case of uniaxial monotonic loading. Thus, for the uniaxial case, the material exhibits zero elastic range, since the stress depends only on the plastic strain (so the model is not <strong>ELASTO-plastic</strong>). I think that the model used is more of a curve-fitting formula and cannot be considered as a constitutive plasticity model. The model used in this publication (2012) is taken from a previous paper published in the <strong>Int. Journal of Solid and Structures (2003)</strong> (ref.16), therefore a closer look on this is deemed necessary for fully understanding the choice of such an approach.
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</ul>Thu, 19 Jan 2012 09:23:28 +0000kourousiscomment 18111 at https://imechanica.orgError | iMechanica