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



12. mar. 2019

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Poznejše gledanje
Komentarjev 4 953
Zareth Wilson
Zareth Wilson Pred 14 minutami
AMAZING. I'm truly staggered. I screamed myself hoarse and wept tears of joy.
sunshineo23 Pred 37 minutami
Officer Meow Meow Fuzzyface
9:50 people don't seem to realize how similar many properties are of metals and plastics.
Mauricio Ahumada
0:30 the chair in the back is so happy to be on camera
LogicalOne Pred uro
this is so amazing.
Lizard Mann
Lizard Mann Pred uro
Let's classify random informaton we definitly will not use^^
Bastiproton Pred uro
Am I the only one who thinks the thing in the thumbnail kinda looks like two people in the missionary position?
Roko Lazić
Roko Lazić Pred 2 urami
I thought I was going to see a video about machine pressing. This is much better
Sanzo Pred 3 urami
I was thinking how silimar he and physics girl was at presenting. And there they were.
Ben The Shrubber
Ben The Shrubber Pred 3 urami
super foward thinking applied materials science.. wonder what happens when i stick my finger in that there but anyway i thought the problem wasnt 'how can we get flexible materials into things/ how can flexible material work for us' but ' how can we make flexible materials reliable and what engineering and material science is required to produce the material that can do this and withstand and tolerate it'
Syam Ahmad
Syam Ahmad Pred 3 urami
hoo, i guessed the same... 4:45
wiebe V aken
wiebe V aken Pred 3 urami
I got a veritasium advertisement on this video... Nice
Genesis Gaming
Genesis Gaming Pred 3 urami
Am I the only one that thinks the thumbnail looks sexual?
Dom Arseneault
Dom Arseneault Pred 4 urami
Wild Prusa @11:40
XHAD Pred 5 urami
You would need to replace the entire system if even one section of it breaks thou
Dan Lorett
Dan Lorett Pred uro
Nah. The ones they showed were just single pieces. Like anything else you could build entire systems out of these pieces and just replace any broken parts like we already do with normal mechanical systems. Also replacements would be cheaper and easier to get - no more ordering parts and waiting for them to be delivered - just download the file (if you don't have it already) and 3D print it.
deepblueyonderspage Pred 6 urami
I totally got the elephant!!! Man I'm feeling smart today. Take that holiday inn express! lol
ok seeing this stuff reduced to no wear hmm why not use these complient mechnisims to replace the moving parts of a car engine i can easily see them replace cams and pistons
Bady89 Pred 8 urami
Are you happy now SLvid ?
WC 1A Pred 8 urami
Ligma Nutz
Ligma Nutz Pred 9 urami
That clutch is so cool
Arwyn Evans
Arwyn Evans Pred 9 urami
1:10 italian boys.
smherczeg Pred 10 urami
I was very satisfied to see everyone going "ooohhh!" just like how I am sitting here now.
Bacon Gravy
Bacon Gravy Pred 11 urami
One step closer to surgical nanites.
mark grissom
mark grissom Pred 11 urami
I can't stand it.... Let me put my finger in there lol
Neet Pred 11 urami
Rude, distasteful interview 0/10
Dylan V
Dylan V Pred 12 urami
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 Pred 12 urami
I break my heart when he said the information is classified😭
doopliss21 Pred 12 urami
Aphex Twin thumbnail
Umbra Pred 13 urami
"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 Pred 13 urami
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 Pred 13 urami
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 SLvid, so there's that, I guess.
The Tired Kitty
The Tired Kitty Pred 14 urami
Why are there so many dank doodle memes in the comments XD.
The Devil In The Circuit
@11:32 "Nook-yoo-ler weapons." Professor Howell, you're embarrassing us all.
fireyhand Pred 15 urami
so how do they deal with fatigue
higgsbosonseeker Pred 16 urami
Fine I give up youtube!!! Stop recommending me this... Oh.. that is fascinating.
Paulo Castro
Paulo Castro Pred 16 urami
geometry is better therefore tools that can shape shift is better every engineer knows that
bbbzerk Pred 17 urami
This video was super fascinating.
BLACKB0MBER Pred 17 urami
Bite my shiny metal a**, meatbags! BENDER BENDER BENDER!
SentinelPrimek Pred 19 urami
Wow, one of the most amazing things I've seen.
Nick Hurley
Nick Hurley Pred 19 urami
I learned sooooo much here.
Oengus Fearghas
Oengus Fearghas Pred 19 urami
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 Pred 22 urami
can you make a camera gyroscope like this?
Chase Gwaltney
Chase Gwaltney Pred 23 urami
Professor SOO cool helping make nuclear weapons. He is a looser. Also those vice grips are garbage.
What, me worry?
What, me worry? Pred dnevom
Most Intriguing!! Are these student ideas?
Jordan Sugarman
Jordan Sugarman Pred dnevom
I can definitely see the appeal of using these in spacecraft applications. High-precision movement with no need for lubrication.
James Sicat
James Sicat Pred dnevom
Metal fatigue?
joseph sebastian
joseph sebastian Pred dnevom
9:44 centrifugal clutch. It already exist but not like this.
AutomotiveCNC Pred 7 urami
A version of this was used by the Bulgarian inventor Rumen Antonov who invented the automatic transmission that works without hydraulic or electric actuators. www.greencarcongress.com/2008/05/antonov-develop.html
FBI Pred dnevom
Awfulmasterhat Pred dnevom
this is 100% cooler than I thought it would be
Niidea1986 Pred dnevom
the first thing that came to my mind was the lauf gravel fork
Duck King
Duck King Pred dnevom
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 Pred dnevom
11:47 Vsauce moment
Trust in Dog
Trust in Dog Pred dnevom
Hah. I got the elephant one.
DSRReacts Pred dnevom
3:08 1 pound force results in 30 pounds of force INFINITE ENERGYa
IceDevias Pred 41 minuto
Wait a second....If I will put brick on another brick.....and betveen them I will put device what will use energy stroed between them....we won!!!....coooool........ Now we must write to Mlack Mesa they should start on project already!!!
Dan Lorett
Dan Lorett Pred uro
somebody fell asleep in physics class
IceDevias Pred 21 uro
in practice y talkin aboooout.......?
None Ofyerbisness
None Ofyerbisness Pred dnevom
Wrong. Trebuchet > catapult.
Mike O'.
Mike O'. Pred dnevom
Well, I hope so. It'd be a lot better than 0000
Imnotgoing Sideways
Who else was NOT fooled by that elephant. =^-^=
DoomRater Pred dnevom
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 Pred dnevom
These Aphex Twin videos just keep getting weirder.
Gastel Pred dnevom
Aphex Twin brought me here... by accident.
Cynical Optimist
Cynical Optimist Pred dnevom
dwavenminer Pred dnevom
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 Pred dnevom
Great idea problem is that they will be made to fail so they will need to be replaced more often.
Sploit Bot
Sploit Bot Pred dnevom
My phone works better when bent!
Brain in a Vat
Brain in a Vat Pred dnevom
Brilliant! This is the height of what the internet is good for! 10/10
adam conard
adam conard Pred dnevom
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 Pred dnevom
How is the lifetime of compliant mechanisms vs conventional mechanisms?
evgiz0r Pred dnevom
cool! Time to try these on my 3d printer :)
Aleksej Zavodilov
Aleksej Zavodilov Pred dnevom
Awesome thanks!!
Valon Selimaj
Valon Selimaj Pred dnevom
"Im 40% wire"
Robert Jones
Robert Jones Pred dnevom
Makes sense considering that most living things in the animal kingdom are basically a gestalt of compliant mechanisms.
Colby V
Colby V Pred dnevom
Are you happy youtube??? I finally clicked it.
Adam Brzozowski
Adam Brzozowski Pred dnevom
Is it possible to print out a titanium body suit?
Bluurrg Pred dnevom
Are you happy SLvid recommendations? I watched it
TheCommon Man
TheCommon Man Pred dnevom
Jamie Taylor
Jamie Taylor Pred dnevom
this is the future
Jamie Taylor
Jamie Taylor Pred dnevom
THIS dude that invented it is a GENIUS!!
mohamad jawad fakhreldine
I hope it's used for good though!
Jamie Taylor
Jamie Taylor Pred dnevom
but are they recyclable?
George Grund
George Grund Pred dnevom
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 Pred dnevom
11:25 the moment when you realize your SLvid rabbit hole probably just showed the locking mechanism for nuclear weapon systems. Nothing to see here @Homeland Security...
fanobennemsi Pred dnevom
I have SimpliSafe.
GAR mind DFKutulas
GAR mind DFKutulas Pred dnevom
Nukes don't exist. Great video though.
227Morgan Pred dnevom
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 SLvid (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 Pred dnevom
a new friction model can be used in cars
jon elias
jon elias Pred dnevom
She is more of a friend isnt she?
Sleepy Pred dnevom
Build an engine now
Tobytronic Cat
Tobytronic Cat Pred dnevom
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 Pred dnevom
Great video, I was utterly enthralled whist watching.
Vaat Dafaak
Vaat Dafaak Pred dnevom
that was awesome and all...but how do you 3d print titanium?
wilwrk4tls Pred 5 urami
+Vaat Dafaak No problem
Vaat Dafaak
Vaat Dafaak Pred 11 urami
wilwrk4tls thnx for info
wilwrk4tls Pred 17 urami
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 Pred dnevom
Eemeli Hietala
Eemeli Hietala Pred dnevom
Why are you in my recommended?
Alystas Pred dnevom
Ok i'm scared now, knowing nuclear safety depends on something that fragile and prone to premature wear and tear :$
Dan May
Dan May Pred dnevom
The educaishon in your country is going down, if those almost useless things can attract people.
Mark Melni
Mark Melni Pred dnevom
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 Pred dnevom
Very good video! this is exactly the content i hope for in youtube channels like these!
I want to die
I want to die Pred dnevom
399 That’s a great price
Mr-Bledi Pred dnevom
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 Pred dnevom
but plastic is bad for the environment
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