organic generative design harness failing

[daniel_schaeffer]

hi SO

i have been making some cool organic clothing by placing preserve geometris roughly on the skin of this human STL i converted to BREP. it work fine for a bracelet and mask but as i move onto the chestpiece im getting issues.

"fusion 360 encountered a problem and failed to complete the output generation"

"the initial shape is divided into two or more parts by the obstacle geometry"

file link:

https://a360.co/2Vv2w4e

i tried adding an initial shape but still get the error

"fusion 360 encountered a problem and failed to complete the output generation"

anyone able to look at my study? thanks very much

[James.Youmatz]

Hi @daniel_schaeffer ,

I'm taking a peek now, but honestly I think it is going to be difficult to obtain the sort of result you are looking for. The loads acting on this harness are very low in magnitude, and I don't believe the constraint you have set up is appropriate for the simulation purpose. It is important to remember that although Generative Design produces some very amazing looking organic shapes and results, the underlying engine is based on an FEA analysis driven by the loads/constraints/objectives given to it.

Right now there is an already very thin material and the software is performing this analysis to calculate outcomes that can withstand the loads applied, whilst trying to achieve a target factor of safety of 2.0. At somepoint during this solve, the outcome is splitting into two bodies, likely because it is becoming so thin due to the low loads, and already thin starting shape. 

I am working on a few things - such as simplifying your obstacle geometry, but I did want to ask - what is your goal for the outcomes you receive here? What are you looking for in terms of the outcomes? If this is a structural test of a harness, I would expect much higher loads than 5 Newtons. Please let me know what I may be missing - but if it is purely for clothing aesthetics I think it may be quite difficult to get the outcome you are looking for. 

Thanks,

[daniel_schaeffer]

hey there James ,

thanks so much for getting back to me

please view this image of previous experiments 3d printed in TPU

i am trying to use the generative engine for mostly aesthetic purposes which is why the loads are non-sensical

they dont represent the real load and are only meant to influence the growth of the shape

the previous experiments went so well and easily i really did not expect such difficulty moving to the chest piece. i do think this system can work to create futuristic clothing with the right care given to setting the constraints and geometry

i had also tried generating just half the chest at a time, and cutting off the legs and head of the obstacle geometry to simplify things

again thanks you so much for your help!

[James.Youmatz]

Hi @daniel_schaeffer ,

I've been playing around with some solutions, but haven't gotten any results yet as a heads up. Few things I want to try:

1. Increasing the loads applied
2. Turning up the Synthesis settings to Fine (under Study->Study Settings)
3. Enlarging the starting shape/preserves to be larger.

I think a combination of these three things should help stop the body splitting into two, causing the failure. Let me know how you make out, and I will continue trying on my end as well.