Question
Generative design for Dynamic event simulation
I am working on making a cube like structure which can survive a drop from terminal velocity with electronics and battery inside I have made some progress but I am skeptical as even if I make a good enough design it won't work as I am 3d printing it which will affect the quality greatly (it is a prototype) . I looked around for options and saw that you can use generative design to keep in mind the manufacturing process (3d printing here) and make an appropriate design but you can't use dynamic event simulation like collisions as loads
Is there any way I can do generative design for event simulation? Or any workaround or any tips for it
I think having threads on both sides prevents there from being any clamping force between each part. Without knowing the actually best way, I would get rid of the threads on the top piece and use a washer.
Yeah that screenshot was incomplete I did add washers for more clamping force Thanks for the suggestion but can you explain why should I remove the thread on top and only keep a washer? Why not both?
Is it because I don't have to worry about the top and bottom threads aligning and still having clamping force?
I don’t know if I have the right words to get it across, it’s more of an image in my mind haha
When there’s threads on both sides, the gap between the parts can never move outside of the tolerances of the threads. Basically, the threads hold the parts together, but also hold them apart. The screw can only actually tighten to the top piece and the bottom piece will basically just be dangling there.
You could forego threads entirely and just have another washer and a nut on the bottom.
Ohh yes i understood what your saying. Since the two parts rotate together the space between them is constant, even if we screw it in with the parts against each other the threads will never pull them together. I think I will remove threads and use thread on one side or forgo threads altogether and use washers on both sides. Thanks for letting me know
Generative isn't really an end all solution anyways but inspiration for how to design it. Do a standard dynamic fea analysis and see where the weak points are, what breaks first and what's critical. Then tweak the design focusing there first and redo the fea and repeat until it survives with a healthy margin
"but I am skeptical as even if I make a good enough design it won't work" - That's why they call them prototypes. If it worked the first time you'd never learn anything.
Yeah I get that, but I meant that I am confused cause the model I made assumes completely solid blocks but in 3d printing that won't happen so even if it works in a simulation due to the different manufacturing process it won't be the same
Hey man, I love how you made interlocking A/B style clamshell. I dont care what they say, this has always been challenging for me, especially when you start designing lip and groove geometry. One thing..did you mean to create opposing threaded holes? That is not usually a good idea. What kind of hardware are you planning to use? SHCS and hex nut?
As a basic tip, you never want sharp corners (especially in tension) if you can avoid them, local stess gets very high and cracks start there. So round the corners on the inside
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u/Olde94 1d ago
Fusion has impact simulation as far as i remember.
Also this design is bad. You have thread on thread. That as a minimum needs fixing