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 2 months ago


    1. Fahrul Ahyan

      **Samsung is taking notes**

    2. Chris Heerschap

      I was reminded of this video when I came across this seriously cool 3D printed hand - one piece and four articulated fingers! www.thingiverse.com/thing:739806 (not my design, not affiliated, etc, etc)

    3. Lucio Amorim

      This was a very interesting video, much more than its title or thumbnail suggested - wich is quite rare these days :)

    4. tânia santos

      i legit applauded. alone in my room. at a computer.

    5. El Catrin C

      First this, and then we will bring aperture science to the real world

    6. Deathsquad03

      I have simplsafe and I for one can tell u that it is the most amazing thing ever

    7. William Murphy

      Rorschach test... two people being intimate

    8. Retro Coyote

      time for mega man

    9. ahmed muhammed

      1:37 those people behind be like what are they doing here...1:38 nvm i will leave

    10. Deuce Moncura

      I am pretty glad to see that there are very few dirty jokes in the comments of this video. And this comment just backfired on me, didn't it?

    11. Μιχάλης Αρ.

      I 've learned so many things from you!

    12. Durbar Show


    13. E&A Productions

      soooo... what your saying is that the iphone 6+ was actually good???

    14. Rainbow Zeebra

      this video should have been named "how to arm nuclear weapons" to get more views

    15. joecugo

      Simplisafe is garbage

    16. Jorge

      The elephant sh#t broke my mind. Thanks.

    17. Not A Sith Lord

      Simplisafe is an unreliable product that you don't want to rely on for your home security. Please hire a security professional to install a hardwired system or approved UL/ULC wireless system in your home. - A security technician.

    18. Mike Bevins

      In your little "Physics girl" cameo you look disheveled almost like if you just had sex ! Just saying

    19. Beef Jerky

      Why is Veritasium so interesting!

    20. C1N3M4T1x

      9:17 that already exists🤔

    21. Pepeijn Hazelhof

      Lot of plastics how about metals

    22. Ostravak

      How they worked out material fatigue?

    23. EpicEpidemic

      #9 "Private"

    24. Yawg moth

      Woah, dude has greys in his beard now. Where has the time gone?


      For 3D printing, what plastic would be best? PLA is not very flexible I know

    26. Jari Fuller

      very cool...thx

    27. Fharish Ahmed Clips

      Most Cringe moment 7:56

    28. Ricky Downhill - RDH

      This is all very cool, but that microscopic stuff is nuts!!

    29. M

      Yea because we have not enough plastic on earth xD

    30. Chris

      These guys at 1:37

    31. crazyassailant

      At about 3:44, you ask the question about how long the switch piece lasts. He referenced fatigue testing which got over a million cycles before failure. Is there any kind of metric or estimation to what that equates to in terms of time in real-world use? How long would that be expected to last?

    32. Jenn Hoff

      Wow, this guy is amazing!!!

    33. Kanishk Gang

      The thumbnail is demonitized.

    34. Teerin Varongchayakul

      this is the coolest tech ever!

    35. Dylan Dreisbach

      Time to get my 3d printer set up again! They are quite cheap if you don't mind being on your own setting it up and troubleshooting and calibrating.

    36. t guanni

      So damn cool...

    37. fernando jaimes

      my reaction to this is just... :O WoW, awesome

    38. Victor Sebastian S.

      just just.. instant subscribe

    39. Charterf 7

      Ipad 11 bend

    40. ufewl

      just a realty bad video a waste of time, wont be subscribing

    41. ufewl

      What the fukc is going on at 6.07 we cant see what is going on or what she does so for someone who explains science it is fukcing uselss

    42. Abdel Hakim

      i can watch your videos all day long one of my favorite US-newrs

    43. Luis Molina

      Bender likes this video.

    44. Heaven Josiah

      Man, if that can work with the electricity conducting paint, it will be crazy awesome

    45. Delphin Outfits

      complaint mechanism means soft transition, more flexible, viable

    46. archisaurus

      What an incredible video. Thank you

    47. Post Cancel

      I want that Elephant rump!

    48. Дмитрий Д

      I should mention that you have compliant mechanism. It is buttons in your computer mouse. Quite old and proved design of buttons.

    49. Jacob Mathew

      So that Atom bomb arming mechanism was another WATCHTIME-BAIT? Came after seeing HOW TO VIRAL video.

    50. Schrödinger

      This guy has the best job in the entire world I won't to be him

    51. Runn Jeet

      Your incredible research methods made me say this, Can I work under you as an assistant sometime?

    52. MrFilipang

      Why isn this industry standard??

    53. Vinayak Halekoti

      Backlash also can see in clearence between rack and pinion.

    54. Ismael Castillo

      Wuoo so many "WTF" moments!

    55. Anton Chigurh

      Bender? It’s Bender 😔.

    56. Had to wait 90 days to change my name

      Hear that ipad pro?

    57. daniel I

      but i am straight though

    58. ChafradorGaming

      Bite my shiny metal ass.

    59. hello there good guy!

      dr banner?

    60. KB

      why the thumbnail look like two people having sex

    61. jhkkjhk

      Thumbnail looks like an Aphex Twin logo

    62. SKMC69

      I grew up in the 70s and 80s and knew sooooo many people who died in car crashes. I wonder how many lives Crumple Zones have saved in the modern era?

    63. Mike Volume

      “Why Machines That Bend are Better” Robot Amon seethes.

    64. D W

      Absolutely AMAZING stuff! I could have watched this stuff for hours.

    65. SkhairKro89

      Samsung missed a major opportunity to sponsor this video with their Flagship Folding Phone!

    66. Steve C

      I suspect such compliant mechanism could make a better artificial knee joint.


      This was invented by an Indian professor

    68. Enderwarrior X

      Remind me again what the purpose of the satisfying clicky thing is, why you’d need that hinge and how the last mechanism keeps nuclear arms safe from earthquakes?

    69. haechi21

      I want that elephant.

    70. Lucas Carman

      I want to see more of the steel clutch. That was the coolest thing to me

    71. Nouche

      Can we agree upon the ambiguity of the thumbnail, please?

    72. Paddy

      mind blown

    73. James Andrew McNamara

      So cool to learn about complaint mechanisms!

    74. Michael Lopez

      you should show some statics analysis for these mechanisms, and then compare them to traditional variants such as hinges and pulleys!

    75. Coding Tunes

      If you pause at 4:20 you realize these guys have no idea where their plastic comes from.

    76. Analytical Reactor

      At 9:06 you present a clutch which is OK, but you avoid saying "centrifugal clutch." AND, you present it to your "physics girl," who likewise does not use the word "centrifugal." WTF is going on here? Rather than pretending that this is a new invention (thus insulting everyone who had a go-cart when he was a kid), you could have been honest and discussed its advantages/disadvantages with typical in-use clutches.

    77. ryan mundell

      this reminds me of a spring

    78. Duderobi Patschie

      yes bending is better this thought also Samsung

    79. MrWolf

      1 million repetition cycles, damn

    80. Rei Mici

      Never witnessed such a genius yet simple idea

    81. StobbyEnduroMX

      I'm sad that you never explained exactly how it was that this engineers nuclear safety device worked.

    82. ุ

      *Machines that bend are better* ( ͡° ͜ʖ ͡°) Think i can agree on that

    83. Harbinger

      I went to BYU but I studied Philosophy...

    84. Jacob Moorman

      How do they age?

    85. Richard Parker

      About 54 seconds in you can see a Prusa 3D printer in the back to the Right. Very cool.

    86. Stoney Lonsome

      Why are bending machines better- because Bender said so "I said bending is better!"

    87. Legion

      Everybody knows that Bender is great.

    88. Bob Dillahunty

      How can I personally profit from this financially even though I did nothing whatsoever to contribute to it?

    89. multiplexed

      Springs and centrifugal clutches are not news... even if they're onesies.

    90. John Smith

      Many Tupperware products have living hinges.

    91. Serge Goncharov

      круче чем последний выпуск Дудя

    92. Cestarian Inhabitant

      This... This is revolutionary...

    93. Jason Willows

      "This makes sure that no random vibration, like earthquakes, can arm nuclear weapons" Because god knows how many times the earthquakes keep on guessing passwords.

    94. Bloginton Blakley

      Glad I watched this.

    95. The Cereal Guy

      That's honestly very interesting

    96. Randy Bobandy

      iPhone 6 disagrees.

    97. Роман Белоусов

      О боже мой. У нас тут изобретение велосипеда.

    98. 오재화

      See ipad is not bad Lolololololol

    99. Jake Kang

      This video reminded me once again about the greatness of "Occam's Razor." Simple is the best always.

    100. Leocat Bestcat

      1:44 This thing looks like the Waterwraith run!!!