Why Machines That Bend Are Better

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Compliant mechanisms have lots of advantages over traditional devices. SimpliSafe is awesome security. It's really effective, easy to use, and the price is great. Check out SimpliSafe here: simplisafe.com/veritasium
I visited the Compliant Mechanisms Research group at Brigham Young University and spoke to Professor Larry Howell:
At the above link, you can download 3D-print files to make some of the objects in the video, plus learn more about compliant mechanisms.
What I learned about compliant mechanisms I summarize in the 8 P's of compliant mechanisms:
1. Part count (reduced by having flexible parts instead of springs, hinges)
2. Productions processes (many, new, different enabled by compliant designs)
3. Price (reduced by fewer parts and different production processes)
4. Precise Motion (no backlash, less wear, friction)
5. Performance (no outgassing, doesn't require lubricant)
6. Proportions (reduced through different production processes)
7. Portability (lightweight due to simpler, reduced part count designs)
8. Predictability (devices are reliable over a long period of time)
Special thanks to Patreon supporters:
Donal Botkin, James M Nicholson, Michael Krugman, Nathan Hansen, Ron Neal, Stan Presolski, Terrance Shepherd
Animation by Alan Chamberlain

Published on


Mar 12, 2019




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Comments 5 114
OrbitingOneneSS 4 minutes ago
This was probably the most interesting technical invention video I watched for quiet a time.
xApemanx 54 minutes ago
that's cool AF
Frogboy Hour ago
my neck bend backwards D:
Shoulda got funkmaster flex's opinion on this.
Misdelivered Dishwasher
i would like to have the downsides listed too like how it's harder to make them robust and able to take a lot of force that doesn't align with its range of motion
I love when women bends too.
cesar velazco
cesar velazco Hour ago
This is way too easy and too efficient for companies to apply. they dont want to make things easier and cheaper unfortunately. over a million cycles without failure? now that destroys company's planned obsolescence. which will in turn lower revenue. its all sad really how this can help the world but greed will impede the process.
Swaying Hemlock
Swaying Hemlock 2 hours ago
"Behind the Fence" sounds suspiciously like "Behind the Curtain".....
Sand man
Sand man 3 hours ago
Thrusters in space eh ? fascinating , thrusting off the what exactly ? the vacuum of space ??? i`ll not be buying anything from that guy . #NASAsnakeoil
Aymen Coucou
Aymen Coucou 3 hours ago
if you got ur mind blown like me like
Bobby Lama
Bobby Lama 3 hours ago
Shame that all leftist and liberals hate polymers. They want wooden huts and wind turbines.
Sander G.
Sander G. 4 hours ago
8 peas sounded pretty good...
Jonathan Martin
Jonathan Martin 5 hours ago
The 8 P's are on the website now!
Nmk6 K02
Nmk6 K02 6 hours ago
This guy should build the next 737
uhoffmann29 6 hours ago
Mind blowing
5MadMovieMakers 6 hours ago
This video is off the hinges!
govind narasimman
govind narasimman 7 hours ago
Interesting and useful
hans christian del rosario
The elephant toy can be revised as video cam stabilizer.ahaha
Kevin Diaz
Kevin Diaz 10 hours ago
Bender Bending Rodriguez, duh!
thejiddy 10 hours ago
I'm gonna add another P. It's "Perfection".
thejiddy 10 hours ago
I'm gonna add another P. It's "Perfection".
kobby bold
kobby bold 11 hours ago
the dot on the elephant's trunk stays at the same point. I saw it coming.
Callie Wickham
Callie Wickham 14 hours ago
Simply safe just spy’s on you, buy a gun
Adam Bechtol
Adam Bechtol 14 hours ago
A neater video than one might expect.
Ben Williams
Ben Williams 15 hours ago
only 1 min in and this guy already sounds like some liberal money grabbing fear monger. Pretty sure nukes are safe, none have ever gone off accidentally. But no, just another avenue for a libtard to induce fear and sell a product.
Michael Enquist
Michael Enquist 16 hours ago
How about a link to where we can download some 3D files to print our own models?
Michael Enquist
Michael Enquist 16 hours ago
Thanks! I just needed to keep watching...
Michael B.
Michael B. 19 hours ago
How sturdy are they though? Plastic wears out over time with real use. I don't know if i'd trust it over a metal tool.
Daniel Zhikhor
Daniel Zhikhor 20 hours ago
You cant have a vaccum and an atmosphere without a barrier. I thought this was a science channel...
ice checksolvea
ice checksolvea 20 hours ago
3d printing technology here we come?
magnumtrooper17 20 hours ago
the thumbnail looks like two spoons doin' it
The Taoist Conservative
same reason why trees that bend are better.
Thumbnail reminds me of Aphex Twin
Osip Vayner
Osip Vayner 21 hour ago
Bendy, bendy, bendy!
Travis Coleman
Travis Coleman 22 hours ago
someone needs to apply this to bicycle suspension. It could make for light, strong, and stiff suspension.
Iain Holmes
Iain Holmes 4 hours ago
CHRISXTR3M3GAMING 22 hours ago
Oh, he knows what happens alright. Look at that proud smirk that screams, "yea. My design is used in nukes😎"
rickowsky 22 hours ago
black magic753
black magic753 22 hours ago
He’s wrote an entire book and not any book a thicc book on compliant mechanisms alone.
Tom Cass
Tom Cass 22 hours ago
you forgot the 9th P Pollution seen as they are almost all made of plastics
5umyn0n4 23 hours ago
thanks a lot for this video. It was very interesting. As a procedural mechanic i can imagine very many uses for that sort of research. wish i could be a part of something like this. i mean a lot of it seems like application of actually rather simple concepts but i feel like ive learnt something here today :)
There are some really smart people in this world. I wish I was one of them. :(
belohnung. Day ago
Желязко Пехливанов
Daaamn that bearing is crazy
Arjun Swayam kumar
wait..thats illegal
Gabriele Fusto
So cool!!!
Bryan Marsh
Bryan Marsh Day ago
10:04 Derek looks amazed at a simple application of physics and elastic behavior of materials! Haha this is great. Love the video. You should do one on shape memory alloys.
The Niwo
The Niwo Day ago
Oops. I tripped and my nuke accidentally launched. Sorry bro
The Niwo
The Niwo Day ago
Give a scientist some plastic and moulds and see what happens :D
That was a very good episode.
Max Teer
Max Teer Day ago
Harvey Jones
Harvey Jones Day ago
That aphex twin logo has some fuckin snap
Hanzimmer7 Day ago
4:54 just woke up from shaggin like rabbits 😜
Float Circuit
That elephant actually made me gasp and smile at the same time. So cool Veritasium, please keep doing your thing! 🥇😊🙌🏽🔥🐘
mancubwwa Day ago
Wait no futurama jokes?
Quite Indeed
Quite Indeed Day ago
So any jokes about Bender the greatest robot?
Hack Delight
Hack Delight Day ago
I saw a man on top of a girl in the thumbnail. Doctors, what is my sickness?
Jurjen van N.
Anyone else see Aphex Twin in the thumbnail?
Dale Anderson
Wow. Fascinating
LarryLynx Day ago
This has been recommended to me from youtube like 25 times now. YES OK I WILL F***ING WATCH IT! STAAAAHP!
razordo Day ago
"It's always been considered to be bad, to have flexibility in your mashine." I think that is a very misleading statement. There have always been parts of machines that have to be rigid, and parts that have to be flexible. Springs, "snapping latches" and other principles shown in this video, have been arround forever.
The Crazy Pineapple
Yeah, but bending hinges are still usually considered a big no-no
Arthro Day ago
to add to that, buildings, planes, bridges, and more must be flexible in order to stay in one piece. Buildings must sway with the wind not to crack and fall, wings must bend to not snap, and bridges have to sway less they collapse.
DarkStorm 97
DarkStorm 97 Day ago
Before watching this video, I thought it was from Japan. 'cause sex robots
Charlie Mallindine
Weird flex but ok
Wonder if the "SimpliSafe" package comes with firearms.
Cool idea. Even if the parts don't last as long as normal spring loaded components they can be 3d printed and replaced easily.
Neal Sterling
Absolutely fascinating! Motion without any moving parts only using material properties.
Qlimax Day ago
@ 5:10 You could put a ratchet setup on that pivot point and make for an interesting tool
David Abbett
David Abbett Day ago
Stunning .... Thank you
André A.N
André A.N Day ago
I got a great idea for not accidentally activating nuclear weapons: Don't fu**ing make nuclear weapons.
Bruno Mostert
it's all about you define "motion"
Malcolm Hughes
i had some pegs that were compliant hinge but they blew apart and dropped my clothes on the ground. im interested in the temperature issues as metal gets cold but it gets brittle...
Max Headrom
Max Headrom Day ago
Awesome! Why the suite when in Utah?
Building with Todd
Sorry, let me pick up my mind as it has just been blown! This video has my creative juices flowing like crazy and I have a tiny bit of experience with 3d printing and might have access to a printer and can't wait to click one of these devices in my own hands. Thanks for sharing and as always Keep Building👍
CatzHoek Day ago
That is cool technology
Paul Ocone
Paul Ocone Day ago
Makes me wonder if there are any applications for musical instrument design. My dad repairs woodwind instruments, and he has to work with the challenges of traditional machines all the time.
Spencer Lemay
Spencer Lemay 2 days ago
Anyone else think Aphex Twin when they clicked this video?
VianaAutoCenter 2 days ago
Hello Derek can you make a video of the international space station component's and explain how long it took to build it?
VianaAutoCenter 2 days ago
Hello Your videos are great. I learned a lot. Thanks!
Francesco Varrato
Pounds? Is it even a measure unit?
DDODJO 2 days ago
This was amazing. Thank you!
Gun Slinger
Gun Slinger 2 days ago
Wow glad there are smart people like this in the world.
Pharmatica 2 days ago
How will it hold up at -270 c in space?
arman rgun
arman rgun 2 days ago
aphex twin logo!
Voyager 2 days ago
Ucmh 2 days ago
As a numbers guy... this video has an unusually high ratio of likes to views.
Screw The Net
Screw The Net 2 days ago
Build me a stepford wife, with al lthe right bendy parts. YEs, everyone and anyone can have their own kinds one day...but I get mine first I says! >,;,
Sammy Fiction
Sammy Fiction 2 days ago
He doesn't know PepeLaugh
Noen 2 days ago
jjohnston94 2 days ago
I guessed right about the elephant. And yes, I would like a cookie. I'm fresh out.
Khushi Sharma
Khushi Sharma 2 days ago
Hey everyone. I am starting a new science channel. I would appreciate any name ideas and tips... Thanks for the time : )
David Secrest
David Secrest 2 days ago
Says silica Is as brittle as glass. Isn't silica glass?
down and left
Unity Alpha
Unity Alpha 2 days ago
oh my god this stuff is soooo cool. My inner child is screaming at me to get a hold of this stuff so i can bend it my self and stuff like that and understand how it works
Mohammed Medhat
Mohammed Medhat 2 days ago
This killed me in my recommendations.
Slaphappy Duplenty
Wow. Now we can finally invent springs.
I_Megaman_I 2 days ago
pretty cool, the next step would be an AI designing this things, like generative design but only for motion devices.
luketube 2 days ago
Okay FIvid, I watched it. Happy now?
Karataron 2 days ago
oddly satisfying video to help you physics
Duff Harris
Duff Harris 2 days ago
So the new MacBook Pros are superior after all.
George Papag
George Papag 2 days ago
Freaky cool!
Hayyan Media
Hayyan Media 2 days ago
But do they biodegradable? Are making more items which will add to microplastics in the oceans?
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