Nonlinear Newton-Raphson Iterative Method in Steel Frame Analysis
Nonlinear Newton-Raphson Iterative Method in Steel Frame Analysis
(OP)
Dear all,
I'm trying to write a Nonlinear solution for a frame using Newton Raphson Method and I think I've done everything I need to do as required by the method but my load-dispacement curve is still a straight line.
I'm using Mathcad to do this.
When I use a Simple Load Incremental Approach, i.e. by excluding the iterative process I get a good representation of Load-Deflection curve. When I try include the iterative process however, in order to get the loads to converge before moving to the next load step my Load-Deflection representation is then a straight line.
Can anyone help me please?
Further details can be provided on request.
Kind Regards,
Ken
I'm trying to write a Nonlinear solution for a frame using Newton Raphson Method and I think I've done everything I need to do as required by the method but my load-dispacement curve is still a straight line.
I'm using Mathcad to do this.
When I use a Simple Load Incremental Approach, i.e. by excluding the iterative process I get a good representation of Load-Deflection curve. When I try include the iterative process however, in order to get the loads to converge before moving to the next load step my Load-Deflection representation is then a straight line.
Can anyone help me please?
Further details can be provided on request.
Kind Regards,
Ken






RE: Nonlinear Newton-Raphson Iterative Method in Steel Frame Analysis
Can you post the details of your question upload your calculations that you have done so far.
desertfox
RE: Nonlinear Newton-Raphson Iterative Method in Steel Frame Analysis