topic Re: safety factor in Fusion Design, Validate & Document Forum

safety factor

ewesei — Tue, 02 Dec 2025 23:51:53 GMT

I ran a simulation on fusion 360. I set my safety factor to be min. 1.4
the simulation was so good and I got safety factor above the minimum I set at the beginning
the issue is when I report the results I got that my safety factor is red even though in the results mentioned higher safety factor from what I choose.

is there any missing part I have to do ?

Re: safety factor

lauri_barnhart — Tue, 09 Dec 2025 18:34:20 GMT

Hi @ewesei,

I wanted to check in and see if you still needed assistance, or if you found a solution to your question already? Let us know if you need further assistance by providing an update or if you have found a solution, please share it with the community so other members who may have the same question could learn from your experience.

All the best,

Lauri | Community Manager

Re: safety factor

ewesei — Mon, 15 Dec 2025 16:22:18 GMT

I still have same problem with no solution.

written that safety factor is fail. but the minimum is 3.11 and my minimum is 1.4

Re: safety factor

Phil.E — Wed, 17 Dec 2025 23:08:36 GMT

Thanks for asking. I can see from the images the Safety Factor result is not failing.

The minimum safety factor is 3.51, which is above the target of 1.4, and the color plot confirms there are no regions below the target.

Safety Factor can pass everywhere while the study still fails another analysis criterion. The failure message is coming from a different analysis criterion, not from Safety Factor. Fusion evaluates multiple criteria at the study level (yield, displacement, strain, acceleration, etc.), and the study is marked as failed if any one of those criteria is exceeded.

In your case, the study includes radial acceleration, and one of the non–Safety Factor checks is likely predicting plastic deformation under that loading. This is why the report text says the design may bend permanently, even though the Safety Factor plot passes everywhere.

I'm happy to confirm this, but I need a little more information. Please provide either:

A screenshot of the Study Setup → Analysis Criteria, or
The design file, so we can inspect which criterion is triggering the failure.

The absence of a red region or minimum marker on the Safety Factor plot is expected here, because Safety Factor itself is not what’s failing.

Re: safety factor

ewesei — Thu, 18 Dec 2025 10:47:40 GMT

Thank you for your accurate replying.
If you have time and we can contact by zoom it will be perfect.

otherwise, this evening i will provide you the screenshots you asked for

Re: safety factor

heather_tracy — Fri, 26 Dec 2025 16:22:15 GMT

Hello, @ewesei,

Did the information provided by @Phil.E help you and answer your question?

If yes, please click on the "Accept Solution" button on the post(s) that solved your problem. This will assist other community users in finding and benefiting from this information.

If not, please do not hesitate to give an update in this thread so all community members receive an update on the progression of your question, and can suggest next steps that may be helpful for you to achieve what you're looking for.

All the best,

Heather | Community Manager

Re: safety factor

ewesei — Tue, 06 Jan 2026 11:26:22 GMT

hello @heather_tracy,
not really, I built the model again after. simulation I still got the same results in report.
can I share the report maybe there is something I am not aware of..

Re: safety factor

Phil.E — Tue, 06 Jan 2026 14:49:13 GMT

The absence of a red region or minimum marker on the Safety Factor plot is expected here, because Safety Factor itself is not what’s failing.

I'm happy to confirm this, but I need a little more information. Please provide either:

A screenshot of the Study Setup → Analysis Criteria, or
The design file, so we can inspect which criterion is triggering the failure.

Re: safety factor

heather_tracy — Fri, 09 Jan 2026 16:32:38 GMT

Hi @ewesei,

I wanted to check in and see if you saw @Phil.E's follow up request and you still needed assistance, or if you found a solution to your question already? Please share any available screenshots or screen recordings so the community can assist you further.

All the best,

Heather | Community Manager