Compliant Mechanisms Lecture 1 Part 1

[@billpengelly7048]

Compliant mechanism design is an amazing field with so much potential. I’m very pleased to see more research being done In this area. We need better design tools and more engineers trained in this field.

[@zurichsee706]

So great that Jonathan shares this with all of us we love this topic. Thanks professor.

[@forglory9537]

My favorite part is where he explains what a dvd box does like he’s talking about an artifact recovered from an ancient ruin.

[@Winther83]

Yeah made me feel ancient as well, since i used the predecessors of that Archaic technology like Vinyl and cassettes in my childhood.

[@rego23]

Thanks a lot for sharing these jewels. I'm currently trying to solve an industrial problem with a compliant mechanism and I enjoyed every second of these videos

[@wolpumba4099]

*What are Compliant Mechanisms?* [1:16] * *Mechanisms:* Devices that transfer or transform motion, force, or energy. * *Compliant Mechanisms:* Mechanisms with flexible elements that bend and deform to achieve motion, storing strain energy in the process. *Examples of Compliant Mechanisms:* [3:03] * *Ancient:* Bow and arrows, crossbows, catapults, bellows. * *Modern:* CD cases, backpack straps, shampoo caps, tweezers, electric shavers, leaf springs, skateboards, diving boards, prosthetics, tennis rackets, bowflex machines, playgrounds. * *Medical:* Endoscopic tools, clamps, prosthetic knee. [8:25] * *Material Properties:* Architectured materials with engineered properties (e.g., negative Poisson ratio). [11:34] * *Energy Harvesting:* Devices that capture ambient vibrations and convert them into electricity. [13:46] *Why Nature Prefers Compliance:* [16:49] * *Efficiency:* Compliant structures require less energy for movement and maneuvering. * *Robustness:* Flexibility allows for impact absorption and stress distribution, preventing damage. [18:54] * *Adaptability:* Compliance enables accommodation of imperfections and changing environments. [20:47] * *Versatility:* Allows for complex motions and functionalities with fewer components. [22:18] *Challenges of Compliant Mechanism Design:* [26:28] * *Complexity:* Designing compliant mechanisms is more intricate than rigid-body systems. * *Uncoupled Design:* Achieving independent control over functional requirements is difficult due to the interconnected nature of compliant elements. [27:04] *Future of Compliant Mechanisms:* [23:52] * *Robotics:* Nature-inspired robots incorporating compliance for enhanced adaptability and efficiency. * *Aerospace:* Compliant wings for improved maneuverability and fuel efficiency. * *Continued Exploration:* Expanding applications in various fields due to their inherent advantages. i used gemini 1.5 pro (2024-05-15)

[@BrainSlugs83]

I absolutely love you for making this available online, thank you! One request I would make is, on your slides that contain hyperlinks, please include QR codes; it makes it easy easier to follow links (both online, and in person). Thanks!

[@jamesrivettcarnac]

This is good advice that I will adopt on all my future presentations

[@BirnieMac1]

Love your work Professor Hopkins Your work helped me get 100% in every quiz in my mechanical engineering unit this semester

[@rakshitpaliwal8778]

Where can I am able to get this lecture presentation (.pptx).

[@mikkelhugobruun4512]

Super good lecture ! Thank you so much for uploading this !

[@Derlaft]

23:30 about birds: IMO not really a fair compare. Birds use a different mode of flight rather than "conventional" airplanes (incl Wright Brothers one). The problem isn't that we cannot make complaint wings, the problem is that we don't know the math and how to produce efficient ornithopters passing certain scale limit. P.S. absolutely love youtube for recommending me this.

[@zhipengchen-jn8fk]

very good😁

[@marlonsaveri]

Is it possible to introduce such curse into the UCLA online courses systems in order to get a certificate?

[@AverageJoeInnovationsLLC]

I am a big fan of compliant mechanisms. However, I've always disliked this often used comparison between traditional vise grips and compliant pliers. It's misleading. Vise grips aren't entirely rigid. Just as with bolts, the moment contact is made with a target surface, vise grips rely on slight deformation to achieve their intended purpose. That is to say the "grip" part of vise grip. What we usually refer to as their bite.

[@SussyBacca]

Wow this is a great lecture, thanks for making it available 😀 I'm working on the course with my kids

[@xinyuwang9364]

Thanks for posting these!!

[@007LvB]

I have no idea what is being explained between 7:00 and 8:00 - perhaps a short video example would be beneficial?

[@BrainSlugs83]

He's explaining that the more you bend something, the more it resists. Think of like a rubber band. It's easy to flex at first, but the tighter you pull it, the more force you have to use. Not like a weight, which weighs the same amount the entire time you're lifting it. The rods though, are engineered in such a way, that although the force comes from deformation (like a rubber band), within the usable range, it does not require more force. It has a constant force that's required. I'm guessing they achieved this feat with micro structures of varying densities. So like, if you cut up a bunch of different sized rubber bands and stitched them together, you might be able to achieve something similar in my analogy.

[@vincentnguyen386]

Thanks for the excellent video

[@dianaaliciachipanaaguilar1983]

Thank a lot

[@hansmaulwurf2187]

When I was young, I wanted to become a professional Boxer, but my face wasnt compliant enough :D

[@salanyabanban9987]

lol

[@pathumthilina3938]

❤️

[@zyxwvutsrqponmlkh]

We don't need no education We don't need no thought control KZbin Teach us all we need to know

[@rakshitpaliwal8778]

I have an Idea in my mind, But I am troubling with its design.

[@Soho9111]

Aircraft industry went down a bad path 💀