Tochnog Finite Element Analysis Files

Dear Tochnogers,

I am including an example of a mesh created with Gmsh which I used as an input file for Tochnog, the edit necessary to run it with Tochnog and the post processing file obtained using the awk script indicated.

The example is a simple 3-D plate made out of two different materials with a circular profile on the right side. One edge is fixed, the other edge has a load applied to it.

Let me have any questions or feedback.

Included in the zip file are: 

The geometry file created with gmsh   				Test-3D-tetras.geo
the Tochnog format file mesh created with gmsh			Test-3D-tetras.dat
The file edited to use as input file for Tochnog renamed	Test-3D-tetras-tochnoginput.dat
The Tochnog output files we use the .dbs 			Test-3D-tetras-tochnoginput.dbs
The mkgmsh.awk script to process the Tochnog output file
to create the post processing file 				foo.pos 
(foo.pos is the post processing file in the gmsh format)


Inside the mkgmsh.awk are the instructions on how to run the Tochnog generated .dbs file 

From the terminal application type "awk -f mkgmsh.awk name_of_.dbs_file.dbs” or gawk if that is the awk interpreter in your system, to get as output :  foo.geo  and foo.pos files

Then start gmsh and do the following

# use gmsh to open foo.geo or the originally created .geo file and use the "merge” menu option to merge with with foo.pos obtained
# use the post processing controls in Gmsh to turn off all but one of the
# output values (all of the dof_label are processed).

That is all there is!

I will be posting more examples in the upcoming weeks.

Fernando Lorenzo