INITial DISPlacements and imposed Dirichlet B.C

[nima_ikm]

Dear FEAP Advisor,

I am running FEAP, only for ''ONE'' time step of Newton-Raphson. As a result, for a new time step, previous converged solution fields are initialized as a displacement field (u_n) in my new input feap file. Also, additional load increment added as a Dirichlet B.C (Edisp). This simply means that in my input file two parameter is interested :

1. Edisp as a new incremental load
2. INITial DISPlacements : from previous converged solution, u_n. (PLEASE look at the attachment)

However, this seems that it does not working for my case. For instance, suppose for node 'a' displacement B.C is assumed as 1e-4 ( u_n(a)=1e-4 ). Then, I expect for new load  step through Edisp function , u_n(a) become 2e-4, but u_n still is 1e-4. (because u_n for 'a' is 1e-4 and through Edisp for a SAME node with value about 1e-4 then it should be equal as 2e-4 )

I would be appreciated to receive your comments on that.

Best

[Prof. R.L. Taylor]

YOu are using a user function to output things -- what does ovtk do?  If you do a "disp all" after your solution what gets put into the output file -- the new solution should be there.n Is it the same as 'ovtk' results?