[Gmsh] Remeshing a distorted mesh with gmsh

[Colin McAuliffe]

Hi David thanks for this information. I am still not having any luck.  
Is the fact that the original and the deformed mesh, which is one I  
want to remesh, have different node locations?

I tried the attached DSM1rm1.geo file to remesh, but when I tell gmsh  
to mesh 2D, gmsh crashes. I also attached the original .geo file,  
DSM1.geo, in case this helps.

Thanks
Colin

Quoting David Colignon <David.Colignon at ulg.ac.be>:

>
> On 14/03/12 21:19, Colin McAuliffe wrote:
>
>> Hello,
>>
>> I am using gmsh as a preprocessor for a large deformation solid   
>> mechanics problem. After a number of increments the mesh
>> becomes distorted and I would like to remesh before continuing the solution.
>>
>> What I have tried is to create a .msh file with the deformed   
>> mesh(attached), and load it into gmsh but I haven't figured
>> out how to remesh directly from the .msh file. Is this even   
>> possible or is a new .geo needed? Also, the elements must be
>> all quads.
>
> Hi Colin,
>
> it is still experimental and not well documented, but you should have a
> look at:
>
> https://geuz.org/trac/gmsh/browser/trunk/tutorial/t13.geo
>
> https://geuz.org/trac/gmsh/wiki/STLRemeshing
>
> https://geuz.org/trac/gmsh/wiki/BlossomQuad
>
> https://geuz.org/trac/gmsh/wiki/
>
>
> Regards,
>
> Dave
>
>
>
>>
>> Thanks
>> Colin
>>
>>
>>
>> This body part will be downloaded on demand.



-- 
Colin McAuliffe
PhD Candidate
Columbia University
Department of Civil Engineering and Engineering Mechanics
-------------- next part --------------
Mesh.RecombineAll=1;
Mesh.Algorithm=6;
Mesh.SubdivisionAlgorithm=1;

cl1 = 5E-6;
cl2 = 3.5E-7;
Point(1) = {0, 0, 0, cl1};
Point(2) = {2E-5, 0, 0, cl1};
Point(3) = {2E-5, 2E-5, 0, cl1};
Point(4) = {0, 2E-5, 0, cl1};
Point(5) = {2E-5, 1.08E-5, 0, cl2};
Point(6) = {0, 1.08E-5, 0, cl2};
Point(7) = {2E-5, 0.92E-5, 0, cl2};
Point(8) = {0, 0.92E-5, 0, cl2};
Line(1) = {1, 2};
Line(2) = {2, 7};
Line(3) = {7, 5};
Line(4) = {5, 3};
Line(5) = {3, 4};
Line(6) = {4, 6};
Line(7) = {6, 8};
Line(8) = {8, 1};
Line(9) = {8, 7};
Line(10) = {5, 6};
Line Loop(11) = {6, -10, 4, 5};
Plane Surface(12) = {11};

Line Loop(13) = {10, 7, 9, 3};
Plane Surface(14) = {13};
Line Loop(15) = {2, -9, 8, 1};
Plane Surface(16) = {15};
Physical Surface(17) = {12, 14, 16};
-------------- next part --------------
Mesh.RemeshParametrization=0; //(0) harmonic (1) conformal 
Mesh.RemeshAlgorithm=1; //(0) nosplit (1) automatic (2) split metis
Mesh.RecombineAll=1;
Mesh.Algorithm=6;
Mesh.SubdivisionAlgorithm=1;

Merge "DSM1rm1.msh";

Compound Surface(100)={12};
Compound Surface(101)={14};
Compound Surface(102)={16};
Physical Surface(200)={100,101,102};