Problem with constraints (SOL 101)




I would like to make a simple simulaion with NX11 - NX Nastran  - SOL 101 with a beam, like on the picture:

pic beam.jpg














I created a solution, but NX did`t solve it. It didn`t write about any errors, just "no results". I think the problem is in constraints, but I am not sure.


Could anybody check my .sim file or other files and explain me where I made a mistake? 


Thanks in advance!


Re: Problem with constraints (SOL 101)

Siemens Phenom Siemens Phenom
Siemens Phenom

The model is statically indeterminate: the constraints are all located on the same planar face and are only applied in the direction normal to that face.


This only constrains 3 rigid body motions: translation normal to the face and rotations about the two in-plane axes. There are 3 unconstrained rigid body motions: the two in-plane translations and rotation about the plane normal.


You need to add more constraints. Easiest would be to change the simple support at one end to a fixed support.

Re: Problem with constraints (SOL 101)

Gears Phenom Gears Phenom
Gears Phenom

Or use symmetry plane.

Re: Problem with constraints (SOL 101)


Thank you, it was helpful!