I have been using Solid Edge for a few weeks now and I am getting used to it. I have also used advanced tools like sheetmetal and frame design.
I am now looking at FEA.
I think I am doing it right, but I cannot find out where or how to change the factor of safety.
On the generated report the FOS doesn't show anything.
I have attached an image of the motor adaptor I am working on. I only need to run the simulation on that part.
1. As its a weldment I glue the connections.
2. If I attached a bolt-on plate and the dummy motor I can choose bolt connections, but to solve the FEA I have to make them glues connections. Why is this?
3. Also to run the FEA I have to define all of my assembly including bolt-on plate and dummy motor.
I hope this makes sense.
Any help will be greatly recieved.
I believe once you have your results, on the Color Bar tab of the ribbon, select the "User-Defined Scale" option in the Scale section and set the scale factor you want (i.e. "2").
Thanks for the info.
Initially it is set to
Model looks ok.
When I change it to
It turns red: I assume bad.
What am I doing wrong?
I would set the min to zero and your max to three. The color bar shows based on color where your nodes FOS value is, not that it is bad. It means that with your 3 max scale, most of your nodes meet a factor of safety of 3. You can invert your color bar if you want to put red at the min FOS scale and magenta to the max FOS scale if you associate red with "bad"...
Surely, whether you invert or not, if your model is the colour of your max figure then it is still bad, or am I missing the point.
I am just starting out using FEA so I may be mis-understanding.
Please find images attached.
Image 1 show the default figures.
Image 2 shows min-0 and max-3
@Dazzie Factor of Safety plots works opposite of Stress plots in that higher is good and means lower stress.
FOS = ultimate_stress / actual_stress
So if the Ultimate Stress for 1060 Aluminum is 10 ksi and my node is experiencing a stress of 5 ksi, then:
10/5 = 2 FOS
Likewise, if my node is experiencing a stress of 10 ksi, then:
10/10 = 1 FOS
Likewise, if my node is experiencing a stress of 20 ksi, then:
10/20 = 0.5 FOS
With FOS, anything above a FOS of 1 is a non-failure, anything below 1 is a failure.
Here is the Help page explaining this...
Dazzie, referring to your screenshots I believe you should select 'Stress' & 'Factor of Safety' in the Plot drop-down options. Then you will understand Grundeys answer better.
Hi Ulf Eriksson.
Thanks for your help. It does seem make sense now, I think. Please see attached image.
As I have mentioned before I am new to FEA and I will be getting some formal training, I just want an understanding about solid edge FEA.
As you can see I have set my scale min1 & max 3. If I understand correctly it is good.
To get the model to start to fail I need to change my max figure to 100.
Does this mean the safety factor is about 100?