Hi, I am a researcher who is a novice for ABAQUS/CAE.

My purpose is to model horizontal non-linear spring in between base and concrete slab.

So, I modeled spring part from linear to nonlinear as below following ABSQUS manual and other resources from the web.

---------------------------------------------------------------------------------------------------------------------------------

*Spring, elset="Horizontal Spring-spring", NONLINEAR, DEPENDENCIES=1
2
-6480000., -0.01
-3240000., -0.005
0., 0.
3240000., 0.005
6480000., 0.01
*Element, type=Spring1, elset="Horizontal Spring-spring"
33121, 2
33122, 3
33123, 5
33124, 6
33125, 10
33126, 11

----------------------------------------------------------------------------------------------------------------------------------------------------------

However, when I tried to import the input file, it showed the error message as such:

WARNING: The following keywords/parameters are not yet supported by the input file reader:
---------------------------------------------------------------------------------
*PREPRINT
*SPRING, DEPENDENCIES, NONLINEAR

And the imported model seemed without horizontal springs which are supposed to be nonlinear.

I tried several ways but result looked same.

Would you please let me know why Abaqus input file reader cannot read nonlinear command modified in the input file even though those commands are described in the manual?

Or just my modification is wrong?

Thank you,

Isaac