how to modify element stiffness matrix

[shanchen]

hi:
everyone,
I want to modify some element stiffness matrix ,then analyse the structure again . can I do it in tcl ？ or anyway I can achieve it?

thanks a lot.

[fmk]

the only way to modiy the stiffness matrix would be if you could change one of the material parameters with the parameter command, add another element in parallel with the element in question whose properties would make the changes you want, or go in and play with the source code and create your own new element.