nutils.github.io/gallery.html at master · timovanopstal/nutils.github.io · GitHub

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---
layout: default
title: Gallery
---

<div id="gallery">

  <div class="center">
    <h2>Goal-adaptive Isogeometric Finite Cell simulation of trabecular bone</h2>
    <p class="caption">In: Computational Methods in Applied Mechanical Engineering <a href="http://dx.doi.org/10.1016/j.cma.2014.07.009">284: 138–164, 2015</a>.</p>
  </div>

  <div class="widecenter">

    <img src="/images/trabecular.jpg" alt="Trabecular bone specimen">

    <div class="textright">
      <p>
        The effective mechanical properties of trabecular bone specimens can be
        computed reliably using Isogeometric Analysis (IGA) in combination with
        the Finite Cell Method (FCM). By directly using micro-CT grayscale data
        to construct a computational grid, the geometry can be captured with a
        high precision.
      </p>
      <p>
        Nutils functionality:
      </p>
      <p>
      <ul>
       <li> Isogeometric Analysis using B-splines and NURBS</li>
       <li> Local refinements using hierarchical splines</li>
       <li> Trimmed elements with multi-level integration schemes </li>
       <li> Goal-adaptive refinement based on dual solution </li>
      </ul>
    </div>

  </div>

<!--
  <h2>Demixing of immiscible fluids in a tube</h2>

  <div class="overlaycontainer">

    <video poster="/images/fluidstube.jpg" controls>
    <source src="http://data.hvzengineering.nl/videos/cahnhilliard.webm" type='video/webm; codecs="vp8.0, vorbis"'>
    <source src="http://data.hvzengineering.nl/videos/cahnhilliard.ogv" type='video/ogg; codecs="theora, vorbis"'>
    <source src="http://data.hvzengineering.nl/videos/cahnhilliard.mp4" type='video/mp4; codecs="avc1.4D401E, mp4a.40.2"'>
    </video>

    <div class="transparent">
      <p>
      Some nice text about this fancy simulation.
      Some nice text about this fancy simulation.
      Some nice text about this fancy simulation.
      Some nice text about this fancy simulation.
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      Some nice text about this fancy simulation.
      </p>
      <ul>
       <li> Cool feature 1 </li>
       <li> Cool feature 2 </li>
       <li> Cool feature 3 </li>
      </ul>
    </div>

  </div>
-->

  <div class="center">
    <h2>Weakly-enforced Slip Method: smeared simulation of a tectonic fault</h2>
    <p class="caption">In: Computational Methods in Applied Mechanical Engineering <a href="http://dx.doi.org/10.1016/j.cma.2013.12.004">271: 144–166, 2014</a>.</p>
  </div>

  <div class="widecenter">

    <img src="/images/wsmfault.jpg" alt="WSM Fault">

    <div class="textleft">
      <p>Earth surface displacement due to earthquakes is commonly modelled by
      placing a dislocation in an elastic medium. The standard finite element
      approach introduces discontinuities between element interfaces. Here the
      displacement field remains continuous. In this smeared approach the mesh
      and stiffness matrix remain independent of the fault, allowing for
      optimal reuse of computational components.</p>
      <ul>
       <li> Integration over embedded manifold using element trimming </li>
       <li> Interfacing with external libraries providing reference solution </li>
       <li> Isogeometric analysis using B-splines </li>
      </ul>
    </div>

  </div>

  <div class="center">
    <h2>Phase-field simulation of brittle fracture</h2>
  </div>

  <div class="widecenter">

    <img src="/images/fracture.jpg" alt="Phase field fracture">

    <div class="textright">
      <p>
        Complex fracture patterns in brittle materials can be captured using
        phase-field simulations. By using a phase field (or damage) field to
        mimic material degradation due to cracking, mechanisms such as
        nucleation, propagation, branching and coalescence follow directly from
        energy minimization principles.
      </p>
      <p>
        Nutils functionality:
      </p>
      <p>
      <ul>
       <li> Multi-field simulation with automatic degree-of-freedom management </li>
       <li> Customizable functions to represent complex constitutive behavior </li>
       <li> Integration with nonlinear solvers </li>
       <li> Parallel computing </li>
      </ul>
    </div>

  </div>

</div>