Showkat Ahmad, if possible attach the log/command file and I will have a look for you.
- 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