Why Machines That Bend Are Better

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  • Published on:  Tuesday, March 12, 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: https://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
  • Source: https://youtu.be/97t7Xj_iBv0


  • Jan Samohýl

     (Mar 28, 2019)

    This is mind-bending, but luckily, my mind is flexible and compliant.

  • Anodyne Melody

     (2 days ago)

    +CunningLinguist01 Maybe you're not quite as skilled a "CunningLinguist" as you claim to be. ;)

  • CunningLinguist01

     (May 18, 2019)

    I wish my wife was...

  • Karthik C

     (Apr 14, 2019)

    Practical examples of use of compliant mechanisms in everyday products1. Every shampoo bottle uses a live hinge made by injection molding - very cheap, durable and assembly free.2. Computer mouse buttons use flexures (those bendy things you see throughout the video). The microswitch inside it has a diaphragm flexure and the top casing flexes when you press on it to transmit the compressive force. Older mouse models had separate distinguishable buttons, now its all one piece.3. Cable ties have a very...

  • Joe Black

     (2 days ago)

    Shampoo bottles I dont care. But some places these design doesnt belong. Like Nissan was using plastic live hinges on thier gloves boxes. You can guess what happens

  • Tanmay Garg

     (May 13, 2019)

    I thought wow, 5 years and the world would be different :D, but it already is

  • Criptufu Pantalones

     (Apr 25, 2019)

    Physics: If you fold a material enough times, it will weaken the structural integrity of the object.Samsung: We present u the galaxy fold

  • xmnemonic

     (3 days ago)

    Not if you stay below elastic limit.

  • ugly cheese

     (4 days ago)

    But it has hinges like on a door

  • 송다훈

     (Apr 18, 2019)

    this is why I like youtube.It gives me amazing information I couldn't even imagine

  • gutspraygore

     (Mar 12, 2019)

    "Is that good thinking?""It's thinking at least."Heheh. I like this guy.

  • Thomas Neal

     (May 15, 2019)

    "Why Machines That Bend Are Better"written by Bender B Rodriguez

  • Christopher Koen

     (17 hours ago)

    “Wheeze” lol

  • joseph dragojevich

     (6 days ago)

    +Brandon LaBianco idk maybe cause this isnt reddit lmao

  • idworkhard

     (Apr 12, 2019)

    Man, this professor is cool. Big respect!

  • FlorimondH

     (May 4, 2019)

    My experience with plastic fatigue in toys doesn't want me to believe this is a good idea.

  • Just4Games

     (2 days ago)

    +Brian86992DH Yes, but long term, failure will still happen, even if we are in the elastic zone. Fissures appear, they get bigger as time goes on and make the section smaller, making the tension applied to the material go past the flowing limit. Still, that can take a LONG time to happen and it usually determined with test.

  • Xelbiuj

     (May 15, 2019)

    I don't imagine the switches on nuclear weapons are triggered over a million times. :P

  • Montana Ranger

     (May 13, 2019)

    This sounds suspiciously like something Futuramas Bender would say....

  • Doctor Jones

     (Mar 13, 2019)

    The thruster control module was probably the coolest thing I've seen all year.

  • Doctor Jones

     (Mar 17, 2019)

    +ludwig amadeus_mEmEs_