## the solution is not converging

## the solution is not converging

(OP)

I am trying to validate a corrugated web girder as shell element having different web and flange properties. But the solution is not converging.The web and flange are are glued together. please suggest me how i can over come the same. I get the error message" Solution not converged at time 1.E-02 (load step 1 substep 1).

thank you

thank you

## RE: the solution is not converging

## RE: the solution is not converging

the material model used is multi linear. the beam is modeled as shell 181 element

the beam has two constraints at one end (in x and y direction) and one constraint at other end ( in y direction) i.e; the beam is simply supported.

## RE: the solution is not converging

Can you attach the input file (all the commands to generate and solve the model), and will have a look.

## RE: the solution is not converging

## RE: the solution is not converging

Its is a 3D model and I have constrained in z direction also but the same problem persists.

## RE: the solution is not converging

## RE: the solution is not converging

- If you can not then check:

1 Elements

2 Loads Restraints

3 Connections

4 Material and section Properties

5 Solver settings

6 Solver Logs

- Also as FEAway suggested run a modal analysis to see that everything is connected (that will address point 1, 2 and 3)

Deactivate non-linearity.

- If it solves without material non-linearity, but with NLGEOM,ON then it is something to do with nonlinear properties in combination with a high load causing a lot of yielding say. If is taht one need to have a fine mesh and use many cuts (load scaled), until the limit load is reached

- If it solves for NLGEOM,off and material on, then it is something like instability that could be happening (doubt it though since it is bending). Try then to use stabilisation, that might help.

- If it does not solve for the above then deactivate that (NLGEOM, and material) and see how it solves.

- If it does no then reduce the force to see that it solves for something small. If it is solves for something small it could be that the force was too large or the stiffness too small.

Try that otherwise attach the log file or the solver output

## RE: the solution is not converging

actually i have generated a MACRO for the same.

the log file is given below

## RE: the solution is not converging

## RE: the solution is not converging

## RE: the solution is not converging

## RE: the solution is not converging

Unfortunate in the log file there is no mesh or geometry areas and so on. Do you have an iges file (you can export from ansys), or did you create the geometry in apdl using K, L and A commands?

In that case you can include the commands or save the iges and attach. As for the mode it is good that parts seem attached. For the constrain how do you constrain it (command or GUI)?

## RE: the solution is not converging

## RE: the solution is not converging

Thank you everyone for the help

## RE: the solution is not converging

## RE: the solution is not converging

## RE: the solution is not converging

## RE: the solution is not converging

## RE: the solution is not converging