NX /DMAP/SOLution 106

[nastranuser123]

I intend modifying the SOlution 106 of NX NASTRAN as I have written some external sub routines for contact and friction analysis.

I need to be able to write out the stiffness matrix, residuals and displacements at some point in the Newton-Raphson iteration, then call the CF code and read back modified versions of the stiffness matrix and residuals.

Can anyonrde some isnight as with locating where in the code we need to insert the modifications.

Any help will be gratefully appreciated.

 

[nastranuser123]

Further to the above,I'd like to add:

As I understand, It is possible to launch an external application from a Nastran solution using the ISHELL capability. ISHELL is a DMAP command that will invoke the external program. That program can be written in any language and is compiled separately from NXN.