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



2019 Бар 12-нд



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Дараа үзэх
Сэтгэгдлүүд 4 898
Bady89 Цагийн өмнө
Are you happy now MNvid ?
WC 1A Цагийн өмнө
Ligma Nutz
Ligma Nutz Цагийн өмнө
That clutch is so cool
Arwyn Evans
Arwyn Evans 2 цагийн өмнө
1:10 italian boys.
smherczeg 3 цагийн өмнө
I was very satisfied to see everyone going "ooohhh!" just like how I am sitting here now.
Bacon Gravy
Bacon Gravy 3 цагийн өмнө
One step closer to surgical nanites.
mark grissom
mark grissom 4 цагийн өмнө
I can't stand it.... Let me put my finger in there lol
Neet 4 цагийн өмнө
Rude, distasteful interview 0/10
Dylan V
Dylan V 4 цагийн өмнө
Its great to see people are starting to use flexibility as an advantage in designs (even though I personally never use it). My concern is that when using flexible materials in designs like the WMD activation device, you would have to really see how long thin pieces of whatever material they would use can last without input for years. From my experiences, when things are just sitting out, events in a temperature controlled room, they're going to degrade, plastics especially. I'm not trying to sound like an ass but that switch test is definitely flawed. Sure you can take a freshly molded/printed plastic switch and it works as he said over a million times without breaking, but that was also in an environmentally controlled room. I would like to see how well it works after going through heating and cold cycles, in different humid environments, and after just sitting for extended periods of time. If it can do all those better than traditional switches then you've got yourself a good design.
Abhinav PV
Abhinav PV 5 цагийн өмнө
I break my heart when he said the information is classified😭
doopliss21 5 цагийн өмнө
Aphex Twin thumbnail
Umbra 6 цагийн өмнө
"He's pretty nonchalant about his work." Just bragged about how his book is the most cited source in compliant mechanisms and over-exaggerated about how all engineers do nothing but design against flexion.
jianhe1234 6 цагийн өмнө
Mechanical fatigue due to repeated movement is one thing, heat cycle fatigue is another. Would like to see how it tested against conventional tools in a heat cycle environment, maybe the machine turns on and it got hot, and then turns off and cools again. Or rather cycle life in extreme temperature conditions. Very interesting video
Edward Carnby
Edward Carnby 6 цагийн өмнө
Isn't this video kind of pointless? I mean, _of course_ machines that bend are better than machines that don't bend. It's a foregone conclusion - if I have a device that can do X, and another device that can do X + A, then the device that can do X + A wins every time. The only reason that wouldn't be so is because of cost considerations and that's not a factor here. Anyone with the functioning intelligence of a eighth grader should be able to understand this fairly readily without having to watch 13 minute long video on the matter... But then I suppose the creator wouldn't be able to keep raking in that sweet sweet ad revenue on MNvid, so there's that, I guess.
The Tired Kitty
The Tired Kitty 7 цагийн өмнө
Why are there so many dank doodle memes in the comments XD.
The Devil In The Circuit
The Devil In The Circuit 7 цагийн өмнө
@11:32 "Nook-yoo-ler weapons." Professor Howell, you're embarrassing us all.
fireyhand 8 цагийн өмнө
so how do they deal with fatigue
higgsbosonseeker 9 цагийн өмнө
Fine I give up youtube!!! Stop recommending me this... Oh.. that is fascinating.
Paulo Castro
Paulo Castro 9 цагийн өмнө
geometry is better therefore tools that can shape shift is better every engineer knows that
bbbzerk 10 цагийн өмнө
This video was super fascinating.
BLACKB0MBER 10 цагийн өмнө
Bite my shiny metal a**, meatbags! BENDER BENDER BENDER!
SentinelPrimek 12 цагийн өмнө
Wow, one of the most amazing things I've seen.
Nick Hurley
Nick Hurley 12 цагийн өмнө
I learned sooooo much here.
Oengus Fearghas
Oengus Fearghas 12 цагийн өмнө
While I do appreciate and understand the benefits of flex in some applications there are some others where it is a poor design choice. Living hinges as an example.
Marko Medenčić
Marko Medenčić 15 цагийн өмнө
can you make a camera gyroscope like this?
Chase Gwaltney
Chase Gwaltney 16 цагийн өмнө
Professor SOO cool helping make nuclear weapons. He is a looser. Also those vice grips are garbage.
What, me worry?
What, me worry? 17 цагийн өмнө
Most Intriguing!! Are these student ideas?
Jordan Sugarman
Jordan Sugarman 17 цагийн өмнө
I can definitely see the appeal of using these in spacecraft applications. High-precision movement with no need for lubrication.
James Sicat
James Sicat 17 цагийн өмнө
Metal fatigue?
joseph sebastian
joseph sebastian 18 цагийн өмнө
9:44 centrifugal clutch. It already exist but not like this.
FBI 18 цагийн өмнө
Awfulmasterhat 19 цагийн өмнө
this is 100% cooler than I thought it would be
Niidea1986 19 цагийн өмнө
the first thing that came to my mind was the lauf gravel fork
Duck King
Duck King 20 цагийн өмнө
i remember the old saying of japanese when they make a katana long long time ago, "bend is better than break". now i understand.
corisco tupi
corisco tupi 21 цагийн өмнө
11:47 Vsauce moment
Trust in Dog
Trust in Dog 22 цагийн өмнө
Hah. I got the elephant one.
DSRReacts 22 цагийн өмнө
3:08 1 pound force results in 30 pounds of force INFINITE ENERGYa
IceDevias 14 цагийн өмнө
in practice y talkin aboooout.......?
None Ofyerbisness
None Ofyerbisness 22 цагийн өмнө
Wrong. Trebuchet > catapult.
Mike O'.
Mike O'. 23 цагийн өмнө
Well, I hope so. It'd be a lot better than 0000
Imnotgoing Sideways
Imnotgoing Sideways 23 цагийн өмнө
Who else was NOT fooled by that elephant. =^-^=
DoomRater 23 цагийн өмнө
So these are the kinds of mechanisms we'd want in a permanent data archive of the internet and multimedia culture.
Evade & Ignite
Evade & Ignite Өдрийн өмнө
These Aphex Twin videos just keep getting weirder.
Gastel Өдрийн өмнө
Aphex Twin brought me here... by accident.
Cynical Optimist
Cynical Optimist Өдрийн өмнө
dwavenminer Өдрийн өмнө
At first I was a little skeptical, but then I rememberd about the huge boost in both energy efficiency and durability that was brought to walking robots by simply adding elastic tendons to thier legs...
Bear up
Bear up Өдрийн өмнө
Great idea problem is that they will be made to fail so they will need to be replaced more often.
Sploit Bot
Sploit Bot Өдрийн өмнө
My phone works better when bent!
Brain in a Vat
Brain in a Vat Өдрийн өмнө
Brilliant! This is the height of what the internet is good for! 10/10
adam conard
adam conard Өдрийн өмнө
cool and all, but you showed nothing useful that would sell. i sure haven't seen those pliers at work yet. and nukes are safed with their neutron generators so ...not giving a free like on this one yet
Exastiken Өдрийн өмнө
How is the lifetime of compliant mechanisms vs conventional mechanisms?
evgiz0r Өдрийн өмнө
cool! Time to try these on my 3d printer :)
Aleksej Zavodilov
Aleksej Zavodilov Өдрийн өмнө
Awesome thanks!!
Valon Selimaj
Valon Selimaj Өдрийн өмнө
"Im 40% wire"
Robert Jones
Robert Jones Өдрийн өмнө
Makes sense considering that most living things in the animal kingdom are basically a gestalt of compliant mechanisms.
Colby V
Colby V Өдрийн өмнө
Are you happy youtube??? I finally clicked it.
Adam Brzozowski
Adam Brzozowski Өдрийн өмнө
Is it possible to print out a titanium body suit?
Bluurrg Өдрийн өмнө
Are you happy MNvid recommendations? I watched it
TheCommon Man
TheCommon Man Өдрийн өмнө
Jamie Taylor
Jamie Taylor Өдрийн өмнө
this is the future
Jamie Taylor
Jamie Taylor Өдрийн өмнө
THIS dude that invented it is a GENIUS!!
mohamad jawad fakhreldine
mohamad jawad fakhreldine 3 цагийн өмнө
I hope it's used for good though!
Jamie Taylor
Jamie Taylor Өдрийн өмнө
but are they recyclable?
George Grund
George Grund Өдрийн өмнө
ya but there's one big difference and that is the vise grips can stay closed
This is absolutely fascinating! Thank you!
Chad Graham
Chad Graham Өдрийн өмнө
11:25 the moment when you realize your MNvid rabbit hole probably just showed the locking mechanism for nuclear weapon systems. Nothing to see here @Homeland Security...
fanobennemsi Өдрийн өмнө
I have SimpliSafe.
GAR mind DFKutulas
GAR mind DFKutulas Өдрийн өмнө
Nukes don't exist. Great video though.
227Morgan Өдрийн өмнө
EVERYONE Please go to movetoamend.org and sign the petition to have a constitutional amendment saying 1) corporations are NOT people and 2) money is NOT free speech. The video "Legalize Democracy" here on MNvid (30 min) does a good job of explaining why this is step ONE to solving ALL of the major issues confronting the average people struggling to get by and have their voices heard in a corrupt political system. Things look bad now, but we can FIX it all! Get behind the movement!
Marian Buduroi
Marian Buduroi Өдрийн өмнө
a new friction model can be used in cars
jon elias
jon elias Өдрийн өмнө
She is more of a friend isnt she?
Sleepy Өдрийн өмнө
Build an engine now
Tobytronic Cat
Tobytronic Cat Өдрийн өмнө
The 'compliant centrifugal clutch' old hat. Look at R/C model cars with i/c engines. These one-piece clutches are at least two decades old.
Hardlydan Өдрийн өмнө
Great video, I was utterly enthralled whist watching.
Vaat Dafaak
Vaat Dafaak Өдрийн өмнө
that was awesome and all...but how do you 3d print titanium?
Vaat Dafaak
Vaat Dafaak 4 цагийн өмнө
wilwrk4tls thnx for info
wilwrk4tls 10 цагийн өмнө
There are a couple of different ways, but any metal that can be powdered can be printed. One way is that a thin layer of powder is laid down and a binder is sprayed on it very precisely where you want to build the part. Then additional layers are put down, each with the binder where you are building the part. Essentially you glue the powder together and the loose powder falls away and you have a somewhat fragile powder part. Then you sinter the part and the powder fuses together to become solid. Another way is that instead of a binder you melt the powder with a laser in consecutive thin layers and each layer bonds to the layer before it, building up a part. It didn't need to be sintered because it's already been melted together with the laser. You can also get metal filament for a traditional consumer FDM 3D printer, print a part and then melt out the plastic to have an all metal part.
Sourcen Өдрийн өмнө
Eemeli Hietala
Eemeli Hietala Өдрийн өмнө
Why are you in my recommended?
Alystas Өдрийн өмнө
Ok i'm scared now, knowing nuclear safety depends on something that fragile and prone to premature wear and tear :$
Dan May
Dan May Өдрийн өмнө
The educaishon in your country is going down, if those almost useless things can attract people.
Mark Melni
Mark Melni Өдрийн өмнө
Thank you. I am a subscriber and I am also an inventor. We were featured on Shark Tank and that opened doors to engineering and R&D experts that I never would have imagined. This episode has put me in the right direction for advancement in our Solar Connector. I love what you do. www.melni.org
lukloek Өдрийн өмнө
Very good video! this is exactly the content i hope for in youtube channels like these!
I want to die
I want to die Өдрийн өмнө
399 That’s a great price
Mr-Bledi Өдрийн өмнө
7:49 though this totally destroys theory of david guetta that he mentioned on his song when he says: Stone-hard as bulletproof glass i am titanium
ramon den Boer
ramon den Boer Өдрийн өмнө
but plastic is bad for the environment
mysmileisfake Өдрийн өмнө
That's so cool, definitely learn something new today.
dan taylor
dan taylor Өдрийн өмнө
more plastic to fill up our already clogged oceans..............................great stuff.
Is Thuku
Is Thuku Өдрийн өмнө
You dont have to be in the shot man. Just film the guy
Tom Arabia
Tom Arabia Өдрийн өмнө
I can think of a better way to guarantee that nuclear weapons don't ever detonate.
Spidey Parker
Spidey Parker Өдрийн өмнө
*Reads Title* Me : You know why ( ͡° ͜ʖ ͡°)
Franco VF
Franco VF Өдрийн өмнө
Fine youtube, i'll watch...
Pepper Spray
Pepper Spray Өдрийн өмнө
Seems like a way to make durable tools disposable.
Cavare Envius
Cavare Envius Өдрийн өмнө
So Bender was right all along. He is the coolest there is because he is a bending unit.
Leonard Greenpaw
Leonard Greenpaw Өдрийн өмнө
I have trouble accepting that these are resilient and durable especially with metal, which becomes brittle when bent repeatedly
Giryo_san Өдрийн өмнө
i got the elephant thing right /0o0/
Legenden27 Өдрийн өмнө
Phil swift is wayyyyyyyyy ahead of this guys, he got Flex Seal, Flex Shot, Flex Tape and Flex Glue products.
JanniMurphy Өдрийн өмнө
this guy is like Elon Musk's dad
Dio Vidi Putra
Dio Vidi Putra Өдрийн өмнө
For once, thanks MNvid....I'm just a curious student.
Torgul Өдрийн өмнө
Cool stuff thx :)
Nathan Өдрийн өмнө
Except that when these parts break, you're absolutely fucked. You have to replace the entire part, not just a single tiny part.
Arthur Jackson
Arthur Jackson Өдрийн өмнө
Shut up and let the Prof. talk please.
rollout the battle rapper
rollout the battle rapper Өдрийн өмнө
9:24 making sure u get a good shot while others are having orgasm.
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