<br>Hi!<br><br>I was thinking back to morphing, and actually, I realized that there is nearly everything already in GMSH.<br>The only thing I do not clearly see (because I'm actually not a GMSH expert I guess, but also because it may not be implemented in the GUI) is how setting up a morphing problem in GMSH.<br>
<br>Basically, achieving morphing needs a finite element solver which is already implemented in GMSH.<br>If I guess correctly, it is like solving a linear elastic problem in a specific region of a mesh defined by boxes.<br>
Out of the box, all nodes are constrained.<br>In the box, all the elements are perfectly elastic.<br>When a handle is moved, it is like imposing a displacement to... mmhh... well, something... the closest node in the box? a set of closest nodes in the box?<br>
And the position of all the nodes in the box is re-computed assuming linear elasticity.<br>One could define an elastic modulus for the elastic material (that would give different shapes).<br><br>Then, from the deformed shape obtained, a new mesh would have to be redefined to comply with specific criteria, what GMSH is able to carry out, isn't it?<br>
<br>Could some GMSH experts or people who have tried out some similar studies may give their opinions?<br>I would be very grateful if you could give any advices?<br><br>Thanks in advance!<br><br><br>Pierre<br><br><br><div class="gmail_quote">
2009/5/4 Pierre JUILLARD <span dir="ltr"><<a href="mailto:pierre.juillard@gmail.com">pierre.juillard@gmail.com</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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<div>Hi!</div>
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<div>I would like to know if there are some morphing capacities in GMSH for surface meshes (tria or quad)?</div>
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<div>I have understood that GMSH is able to re-mesh part of an exisiting mesh. This is one needed feature for the morphing.</div>
<div>However, are there the needed tools to setup the morphing problem, i.e. possibility to create</div>
<div> - handles</div>
<div> - boxes defining areas where the mesh is impacted by handles displacement</div>
<div> - to setup the "stiffness" of the mesh inside a given box of influence?</div>
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<div>If no, do you think nonetheless that there could be a way to achieve morphing using GMSH with some additionnal tools that may have some features GMSH could be missing (maybe there could be some tools allowing to morph somehow a BREP geometry for instance that would then only need a remeshing with GMSH).</div>
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<div>I thank you in advance for your help and advices.</div>
<div>Best regards,</div>
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<div>Pierre</div>
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