For example, I have this statik system

My goal:

I want to investigate the behavior of the beam, when a stiffness of the spring is changed during analysis

At the "Step-1" the system is loaded by means of concentrated load "F".

I want:

At "Step-2" the system shall be loaded by means of same load "F", but the stiffness of spring shall be changed.

Because of, the spring is not a type of boundary conditions in Abaqus, I can't change the stiffness at "Step-2". I can change the stiffness after a "job" is finished. It means, that I have alwas a new system. I want to change the stiffness in already deformed system.

Many thanks in advance!