Lifting load = 50,000kg
Looks under optimized.
I don't have time at the moment to look closely at your pictures, but typically you need to add a soft spring to stabilize the model. Even if your model is perfectly symmetrical - the mesh is not, which will seem to return an unstable model.
Would the use of symmetry in a model like this one avoid the need for the soft spring? Also, would you place the spring at the lifting point or somewhere on the load to stabilize it?
No, no soft spring there to stabilize the model.
I would be more comfortable continuing the discussion if the OP posted actual SWx files - the setup for this analysis does not appear to be correct to me.
In class I do a demonstration of how students using different modeling techniques to arrive at exactly the same geometry results in different mesh (we are doing a finite mesh, not infinite mesh) and see how to do a convergence analysis.
For a problem like this I show a video of very heavy, slightly unbalanced load controlled by a relatively weak tag-line operator on the ground.
We use soft spring to stabilize for the digital model.
Sometimes I wish I could go back to school. My FEA instructor provided us with a BASIC program with a 16x16 matrix. Everything else was by hand. I got a real good understanding of the principals, but not much on setting up complex trials.
It is my perception that most instructors are not teaching how to use modern design tools, and when it comes to analysis - still using technique from the 1950s.
The underlying theory is important, but when this stuff becomes a challenging “game” it isn’t simply retained long enough to pass the next exam.
I think all of the MCAD companies have fumbled the ball on retraining faculty in the use of 21 century tools.
These tools are professional tools and deserve (require?) professional level preparation.
Well, it was 20 years ago. But they did have Ansys at my first job so there were programs available even then.
Thank you very much for your idea and suggestion! Using Intel Solver is the key for this project.
Where did you go?
Do you have a question?
Can you Attach your assembly here?
Recently I'm doing job for lifting system layout, I'm trying to compare the function of Remote Load and Rigid Connector in SolidWorks Simulation, and I'm to look for one better way to replace the ropes in one reality lifting system.
The lifting system consist of ropes, spreader (frame), hooks, etc. The max. load 50 tones, safety factor about 4.
Above screenshots are the FEA results. Looks the Remote Load and Rigid Connector are good for FEA for lifting system.
Thank you very much for your time and suggestion.
More samples here,
Retrieving data ...