Imposing displacement rather then applying force?
Imposing displacement rather then applying force?
(OP)
Hello all!
I'm working on a problem where I need to determine reaction loads based on a imposed displacement of a system.
I have a component (that can be approximated as a long beam) that will be forced to bend (elastically) by brackets supporting it at various locations, I know how much each bracket / support will move (this displacement is imposed by the circumstances of the problem). I need to be able to determine the reaction loads in each of the brackets at this specific displacement.
Is there any way I can run an analysis in FEMAP where instead of imposing loads, i can impose a final deflected shape and have the analysis give me the required loads at specific locations /nodes?
Thanks.
I'm working on a problem where I need to determine reaction loads based on a imposed displacement of a system.
I have a component (that can be approximated as a long beam) that will be forced to bend (elastically) by brackets supporting it at various locations, I know how much each bracket / support will move (this displacement is imposed by the circumstances of the problem). I need to be able to determine the reaction loads in each of the brackets at this specific displacement.
Is there any way I can run an analysis in FEMAP where instead of imposing loads, i can impose a final deflected shape and have the analysis give me the required loads at specific locations /nodes?
Thanks.





RE: Imposing displacement rather then applying force?
Oh yes, you can prescribe an enforced displacement using "Model > Load > Nodal > Displacement". But in order to run the analysis you have to prescribe a displacement constraint "Model > Constraint > Nodal" to the same node with the same DOF as you used to prescribe the enforced displacement, if not the NX NASTRAN solver will give you error, OK?.
Best regards,
Blas.
~~~~~~~~~~~~~~~~~~~~~~
Blas Molero Hidalgo
Ingeniero Industrial
Director
IBERISA
48011 BILBAO (SPAIN)
WEB: http://www.iberisa.com
Blog de FEMAP & NX Nastran: http://iberisa.wordpress.com/
RE: Imposing displacement rather then applying force?
RE: Imposing displacement rather then applying force?
RE: Imposing displacement rather then applying force?
It's the same approach in NEiNastran.
You constrain the node and than you enforce a displacement on the constrained node.
Good Luck
Thomas