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Hello, Can anyone clarify this statement about the 3 requirements for using FNA. -Be primarily linear-elastic. -Have a limited number of predefined nonlinear members. -Lump nonlinear behavior within link objects. The model I am using has layered non-linear shells that are defined by...

Here is the file. Like I stated before I used a cantilever beam and now I have applied the accel load in the load case window. The reason I dont think the results make sense is that a hinge is not formed and the deflection of the tip is linear. It should be non linear to reflect the beam...

Thank you for getting back to me. I will attach my model file on Monday and maybe you can explain to me what I am doing wrong.

Here is the link to the video, http://www.youtube.com/watch?v=CzqZVDse-eI When setting up the load case, they use accel like you mentioned. Is this is only way to do this?

Hi, Can someone please clarify some things for me. I am new to sap0000 and trying to figure out how to work with non linear analysis. For a simple introduction I just made a cantilever beam with a load at the tip. I defined a time-history function with a load that should start in the elastic...