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4 results for “CPFEM”
CPFEM Goss Texture
<pre>Stress-Strain Analysis of a Polycrystal with Goss Texture</pre>
CPFEM Goss Texture
<pre>Stress-Strain Analysis of a Polycrystal with Goss Texture</pre>
Accompanying dataset for the paper "An implicit staggered algorithm for CPFEM-based analysis of aluminum"
<h2>Contributions</h2> <ul> <li>Pedro Areias did contribute to general programming and theory</li> <li>Charles dos Santos did contribute to investigation, specific programming and validation</li> <li>Rui Melicio did contribute to the text and typesetting</li> <li>Nuno Silvestre did contribute to the Scientific validation</li> </ul> <h2>Funding sources</h2> <ul> <li>FCT Fundação para a Ciência e a Tecnologia project LAETA Base Funding (DOI: 10.54499/UIDB/50022/2020)</li> </ul> <h2>Data structure and information</h2> <ul> <li>data - <code>dataset directory</code><ul> <li>convertFig2Eps - <code>script to convert xfig sources to EPS</code></li> <li>driftfigures - <code>data to assess drifting in \xi and effective strain</code> <ul> <li>cuboid.gid - <code>directory for a single cube analysis, to assess drifting</code></li> </ul> </li> <li>epcfigures - <code>these are the sources for the cylinder test with localization</code><ul> <li>cylindersinglecrystalcoarse.gid - <code>cylinder with ( $\theta=0.25\pi,\phi=0$)</code></li> <li>cylindersinglecrystalcoarseotherangles.gid - <code>cylinder with ($\theta=0.304\pi,\phi=0.25\pi$")</code></li> </ul> </li> <li>errorlogstrain - <code>contains the mathematica sheet for the plots in the logstrain error analysis</code></li> <li>originalfigures - <code>these are the original figures in the paper</code></li> <li>padeerrorgraf - <code>mathematica sheet for the analysis of padé approximation error</code></li> <li>reactions - <code>reactions sources for the localization problem</code></li> </ul> </li> <li>workflows - <code>reproducibility of some of the computational results</code></li> </ul> <h2>Dataset Description</h2> <p>Contains:</p> <ul> <li>Data sources from SimPlas (txt and order)</li> <li>Gnuplot files (gp)</li> <li>Tikz files (tikz)</li> <li>XFig files (fig)</li> <li>Mathematica scripts (nb)</li> <li>Script to convert Xfig in Eps: figtex2eps.sh</li> </ul> <p><em>Original figures are also included.</em></p> <h2>Paper Description</h2> <p>In this paper, we propose an implicit staggered algorithm for crystal plasticity finite element method (CPFEM) which makes use of dynamic relaxation at the constitutive integration level. An uncoupled version of the constitutive system consists of a multi-surface flow law complemented by an evolution law for the hardening variables. Since a saturation law is adopted for hardening, a sequence of nonlinear iteration followed by a linear system is feasible. To tie the constitutive unknowns, the dynamic relaxation method is adopted. A Green-Nagdhi plasticity model is adopted based on the Hencky strain calculated using a [ 2/2 ] Padé approximation. For the incompressible case, the approximation error is calculated exactly. A enhanced-assumed strain (EAS) element technology is adopted, which was found to be especially suited to localization problems such as the ones resulting from crystal plasticity plane slipping. Analysis of the results shows significant reduction of drift and well defined localization without spurious modes or hourglassing.</p>
CPFEM Goss Texture
<pre>Stress-Strain Analysis of a Polycrystal with Goss Texture</pre>
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