Hello dear All.
Hope you are well. in the part of this article we see:
(Finite element analysis for such connection, using ABAQUS, requires two types of analyses. The first type is Eigenvalue buckling analysis which is used to estimates the first buckling mode. The second type is to perform inelastic geometrical nonlinear analysis in which the first buckling mode obtained from the buckling analysis is factored by a magnitude of Lu/1000, where Lu is the length between points of effective bracing, and is used as initial imperfection of the structure members to initiate the local buckling in the component plates. In order to prevent local yielding around the loading point, the concentrated load is simulated by a uniform pressure distributed above an elastic rigid solid element. The arc length method (Riks) with the aid of full Newton-Raphson iteration method is used to trace loading path till failure point is reached.)
………………………………………………..
I have simulated the specimen and I was able to made the first analysis.( Buckle). And before submitted the job, I had edit keyword and wrote:( *NODE FILE U)
Then I made the copy from the file. And deleted the Buckle step and I have made a new step of RIKS Analysis.
And I apply the Eigenvalue as the force .
but when I want to edit keyword to writing the imperfection, I facing the Error. Where is my fault?
thanks.
- Badges
- Science topic