Why Machines That Bend Are Better

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  • Joylandi 12-Mar, 2019
  • 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

Fikrlar • 5 064

  • Michael Enquist
    Michael Enquist 13 soat oldin

    How about a link to where we can download some 3D files to print our own models?

  • Michael B.
    Michael B. 15 soat oldin

    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 16 soat oldin

    You cant have a vaccum and an atmosphere without a barrier. I thought this was a science channel...

  • ice checksolvea
    ice checksolvea 16 soat oldin

    3d printing technology here we come?

  • magnumtrooper17
    magnumtrooper17 16 soat oldin

    the thumbnail looks like two spoons doin' it

  • The Taoist Conservative
    The Taoist Conservative 16 soat oldin

    same reason why trees that bend are better.

    NEINEINEINEINEIN 17 soat oldin

    Thumbnail reminds me of Aphex Twin

  • Osip Vayner
    Osip Vayner 17 soat oldin

    Bendy, bendy, bendy!

  • Travis Coleman
    Travis Coleman 18 soat oldin

    someone needs to apply this to bicycle suspension. It could make for light, strong, and stiff suspension.

    CHRISXTR3M3GAMING 18 soat oldin

    Oh, he knows what happens alright. Look at that proud smirk that screams, "yea. My design is used in nukes😎"

  • rickowsky
    rickowsky 18 soat oldin


  • black magic753
    black magic753 19 soat oldin

    He’s wrote an entire book and not any book a thicc book on compliant mechanisms alone.

  • Tom Cass
    Tom Cass 19 soat oldin

    you forgot the 9th P Pollution seen as they are almost all made of plastics

  • 5umyn0n4
    5umyn0n4 19 soat oldin

    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 :)

  • fernysyoutube
    fernysyoutube 20 soat oldin

    There are some really smart people in this world. I wish I was one of them. :(

  • belohnung.
    belohnung. 20 soat oldin


  • Желязко Пехливанов

    Daaamn that bearing is crazy

  • Arjun Swayam kumar
    Arjun Swayam kumar 21 soat oldin

    wait..thats illegal

  • Gabriele Fusto
    Gabriele Fusto 21 soat oldin

    So cool!!!

  • Bryan Marsh
    Bryan Marsh 21 soat oldin

    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 21 soat oldin

    Oops. I tripped and my nuke accidentally launched. Sorry bro

  • The Niwo
    The Niwo 21 soat oldin

    Give a scientist some plastic and moulds and see what happens :D

  • ripvanstinkle
    ripvanstinkle 23 soat oldin

    That was a very good episode.

  • Max Teer
    Max Teer Kun oldin


  • Harvey Jones
    Harvey Jones Kun oldin

    That aphex twin logo has some fuckin snap

  • Hanzimmer7
    Hanzimmer7 Kun oldin

    4:54 just woke up from shaggin like rabbits 😜

  • Float Circuit
    Float Circuit Kun oldin

    That elephant actually made me gasp and smile at the same time. So cool Veritasium, please keep doing your thing! 🥇😊🙌🏽🔥🐘

  • mancubwwa
    mancubwwa Kun oldin +1

    Wait no futurama jokes?

  • Quite Indeed
    Quite Indeed Kun oldin +1

    So any jokes about Bender the greatest robot?

  • m8edofallm8eds
    m8edofallm8eds Kun oldin


  • Hack Delight
    Hack Delight Kun oldin

    I saw a man on top of a girl in the thumbnail. Doctors, what is my sickness?

  • Jurjen van N.
    Jurjen van N. Kun oldin

    Anyone else see Aphex Twin in the thumbnail?

  • Dale Anderson
    Dale Anderson Kun oldin

    Wow. Fascinating

  • LarryLynx
    LarryLynx Kun oldin

    This has been recommended to me from youtube like 25 times now. YES OK I WILL F***ING WATCH IT!

  • razordo
    razordo Kun oldin +3

    "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
      The Crazy Pineapple 23 soat oldin

      Yeah, but bending hinges are still usually considered a big no-no

    • Arthro
      Arthro 23 soat oldin

      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 Kun oldin

    Before watching this video, I thought it was from Japan.

    'cause sex robots

  • Charlie Mallindine
    Charlie Mallindine Kun oldin

    Weird flex but ok

  • TootTootMcbumbersnazzle

    Wonder if the "SimpliSafe" package comes with firearms.

    SWAGCOW Kun oldin

    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
    Neal Sterling Kun oldin +1

    Absolutely fascinating!
    Motion without any moving parts only using material properties.

  • Qlimax
    Qlimax Kun oldin

    @ 5:10 You could put a ratchet setup on that pivot point and make for an interesting tool

  • David Abbett
    David Abbett Kun oldin

    Stunning .... Thank you

  • André A.N
    André A.N Kun oldin +1

    I got a great idea for not accidentally activating nuclear weapons: Don't fu**ing make nuclear weapons.

  • Bruno Mostert
    Bruno Mostert Kun oldin

    it's all about you define "motion"

  • Malcolm Hughes
    Malcolm Hughes Kun oldin

    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 Kun oldin

    Awesome! Why the suite when in Utah?

  • Building with Todd
    Building with Todd Kun oldin

    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
    CatzHoek Kun oldin

    That is cool technology

  • Paul Ocone
    Paul Ocone Kun oldin

    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 Kun oldin

    Anyone else think Aphex Twin when they clicked this video?

  • VianaAutoCenter
    VianaAutoCenter Kun oldin

    Hello Derek can you make a video of the international space station component's and explain how long it took to build it?

  • VianaAutoCenter
    VianaAutoCenter Kun oldin

    Your videos are great. I learned a lot.

  • Francesco Varrato
    Francesco Varrato Kun oldin

    Pounds? Is it even a measure unit?

    DDODJO Kun oldin

    This was amazing. Thank you!

  • Gun Slinger
    Gun Slinger Kun oldin

    Wow glad there are smart people like this in the world.

  • Pharmatica
    Pharmatica Kun oldin

    How will it hold up at -270 c in space?

  • arman rgun
    arman rgun Kun oldin

    aphex twin logo!

  • Voyager
    Voyager 2 kun oldin


  • Ucmh
    Ucmh 2 kun oldin

    As a numbers guy... this video has an unusually high ratio of likes to views.

  • Screw The Net
    Screw The Net 2 kun oldin

    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 kun oldin

    He doesn't know PepeLaugh

  • Noen
    Noen 2 kun oldin


  • jjohnston94
    jjohnston94 2 kun oldin

    I guessed right about the elephant. And yes, I would like a cookie. I'm fresh out.

  • Khushi Sharma
    Khushi Sharma 2 kun oldin

    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 kun oldin

    Says silica Is as brittle as glass. Isn't silica glass?

    SOUMYADEEP GHOSH 2 kun oldin

    down and left

  • Unity Alpha
    Unity Alpha 2 kun oldin

    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 kun oldin

    This killed me in my recommendations.

  • Slaphappy Duplenty
    Slaphappy Duplenty 2 kun oldin

    Wow. Now we can finally invent springs.

  • I_Megaman_I
    I_Megaman_I 2 kun oldin

    pretty cool, the next step would be an AI designing this things, like generative design but only for motion devices.

  • luketube
    luketube 2 kun oldin +2

    Okay UZclip, I watched it. Happy now?

  • Karataron
    Karataron 2 kun oldin

    oddly satisfying video to help you physics

  • Duff Harris
    Duff Harris 2 kun oldin

    So the new MacBook Pros are superior after all.

  • George Papag
    George Papag 2 kun oldin

    Freaky cool!

  • Hayyan Media
    Hayyan Media 2 kun oldin

    But do they biodegradable? Are making more items which will add to microplastics in the oceans?

  • trance dj
    trance dj 2 kun oldin +1

    Prof Howell = Dentist from Hangover???

  • chris4072511
    chris4072511 2 kun oldin

    That gripper lacks the key features of vice grips: adjustable distance jaws and locking when closed.

    • jjohnston94
      jjohnston94 2 kun oldin

      Yeah, well, it's really more of a proof-of-concept piece than a market-ready product.

  • Luke Watson
    Luke Watson 2 kun oldin

    Did this video had a different title? 🤔

  • bugz000
    bugz000 2 kun oldin

    11:47 "hey vsauce, michael here."

  • SD sc0rch
    SD sc0rch 2 kun oldin

    Q --- do these compliant mechanisms get coupled with piezoelectric materials??
    seems like it would be a natural fit and or application

  • SD sc0rch
    SD sc0rch 2 kun oldin


  • Mush V. Peets
    Mush V. Peets 2 kun oldin

    He was right w/r/t/ the elephant's trunk, actually. It _does_ go up and in. Just that that movement happens to be cancelled by the rest of the elephant. :P
    As for those silicon clickety bits, does this mean we can now etch compact mechanical computers with the same techniques used to make compact electronic computers?

  • Kutulue
    Kutulue 2 kun oldin

    Wow this completely blows my Non-Compliant mechanisms out of the water.

  • Alex Dearman
    Alex Dearman 2 kun oldin

    Great vid. What is the white plastic that was used for the elephant etc?

  • Tunde O
    Tunde O 2 kun oldin

    8:27 , looks like a James C Maxwell bust

  • David Messer
    David Messer 2 kun oldin

    Mechanical systems can be much more reliable than electronic ones. I wouldn't be surprised if nuclear bombs have many mechanical devices in them.
    I heard of a missile that used a spring-wound gyroscope instead of motor driven. It didn't use a battery that could go bad or need to be replaced. It only needed to run for a minute or so, so using mechanical energy made since. It could be stored for years without worrying about replacing the battery.

  • Wellful Goodness
    Wellful Goodness 2 kun oldin +1

    I thought this was a new Aphex Twin song since that thing looks like his logo.

  • Iian
    Iian 2 kun oldin

    "In the councils of government, we must guard against the acquisition of unwarranted influence, whether sought or unsought, by the military-industrial complex. The potential for the disastrous rise of misplaced power exists, and will persist."

  • Gamikom
    Gamikom 2 kun oldin +1

    You are excited about weapons of mass destruction... Unsubscribed!

  • Carlson Darlson
    Carlson Darlson 2 kun oldin

    Hi! Michael, here.

  • Rodolfo Gonzalez Rivera

    I can see compliant mechanisms implemented in car engines sometime in the future

  • SgtRevan
    SgtRevan 2 kun oldin +16

    Begs the question, why are these not mainstream yet?

    • Cakeportal
      Cakeportal 13 soat oldin

      I reckon they'd be a lot harder to design than traditional mechanisms.

    • Obsession With Eyes
      Obsession With Eyes 23 soat oldin +1

      +SuperAWaC if NASA uses it to make satellite thruster parts, I don't think the design is the problem, but rather the material. There's plenty of examples this very video provides to show how many different materials can be used to make these machines with. Anything from titanium to glass, and anything in between.

    • Yesto
      Yesto 23 soat oldin

      +DugThatOutMyself well yeah, if youre too late at switching the part but in many cases you dont wait until something breaks to check if it needs to be fixed

    • DugThatOutMyself
      DugThatOutMyself Kun oldin

      +SuperAWaC that`s if you`re forgetting, that one broken piece usually damages at least one more

    • SuperAWaC
      SuperAWaC Kun oldin +3

      because while these have millions of cycles before breaking, traditional methods have tens or hundreds of millions of cycles, and when these break you need to replace the whole thing rather than a single part.

  • Gaming Casualties
    Gaming Casualties 2 kun oldin +1

    bending parts will break easily

  • Christopher Moye
    Christopher Moye 2 kun oldin

    Mind beyond blown

  • scanlime
    scanlime 2 kun oldin

    flexures are cool; too bad about the nuclear weapons tho

  • Roberto Smith
    Roberto Smith 2 kun oldin

    Stop trying to be a comedian and interrupting the guy. Makes it too annoying to watch.

  • Zareth Wilson
    Zareth Wilson 2 kun oldin +2

    AMAZING. I'm truly staggered. I screamed myself hoarse and wept tears of joy.

  • sunshineo23
    sunshineo23 2 kun oldin


  • Officer Meow Meow Fuzzyface

    9:50 people don't seem to realize how similar many properties are of metals and plastics.

  • Mauricio Ahumada
    Mauricio Ahumada 3 kun oldin

    0:30 the chair in the back is so happy to be on camera