*Introduction:* * *[**0:00**]* Axiomatic design favors uncoupled design parameters and function requirements for simplicity and ease of fixing issues. * *[**3:19**]* Nature, on the other hand, exhibits highly coupled and complex designs. * *[**4:22**]* Rigid mechanisms are preferred over compliant ones due to their predictability and ease of design. * *[**6:05**]* Advancements in design tools are making compliant mechanism design easier, leading to superior performance. *Compliant Mechanism Applications:* * *[**6:38**]* *Chainsaw Clutch:* Replacing multiple rigid parts and a spring with a single compliant piece, improving weight and ease of manufacturing. * *[**9:04**]* *Zero Stiffness Joint:* Achieves high stiffness in all directions except for rotation, providing near-zero resistance in a specific rotational direction. * *[**12:46**]* *Lattices:* Architected materials using zero stiffness joints, enabling complex kinematics with a single piece. * *[**13:30**]* *Flexure Coupling:* Accommodates misalignment between rotating shafts without the drawbacks of rigid couplings (clatter, friction, wear). * *[**14:56**]* *Overrunning Clutch:* Allows rotation in one direction only, engaging a ratchet mechanism when rotating in the opposite direction. * *[**15:55**]* *Multistability:* Designs with multiple stable states, achieved by strategically utilizing compliance and strain energy. * *[**17:40**]* *Lamina Emergent Mechanism:* 3D mechanisms created by deforming a single planar sheet, simplifying fabrication and assembly. * *[**20:04**]* *Origami and Kirigami:* Art forms utilizing compliance and selective cuts to create compact deployable structures. *Advantages of Compliant Mechanisms:* * *[**22:26**]* *Reduced Part Count:* Often requiring fewer parts compared to traditional mechanisms. * *[**22:26**]* *Easier Fabrication and Assembly:* Simplifying manufacturing and assembly processes, often resulting in monolithic designs. * *[**23:45**]* *Lighter Weight:* Utilizing less dense materials and eliminating bulky components. * *[**24:08**]* *Reduced Cost:* Lower material usage, simpler fabrication, and assembly contribute to significant cost reduction. * *[**24:20**]* *Reduced Friction and Wear:* Eliminating sliding and pin joints, resulting in less friction, heat generation, and wear. * *[**25:04**]* *Reduced Maintenance:* Fewer parts and lack of wear contribute to lower maintenance requirements. * *[**25:56**]* *Energy Storage:* Natural ability to store strain energy, eliminating the need for additional springs. * *[**26:14**]* *Scalability:* Easily miniaturized or scaled up without significant changes in design principles. * *[**27:34**]* *Precision:* Achieving high precision due to the inherent deterministic nature of deformation. *Conclusion:* * *[**28:23**]* Compliant mechanisms offer numerous advantages over traditional rigid mechanisms, particularly in areas like cost, weight, and precision. * *[**28:23**]* Understanding compliant mechanisms can unlock new design possibilities and lead to innovative solutions. i used gemini 1.5 pro (2024-05-15)
Looking forward to your thoughts on reducing maintenance. I am fascinated by compliant mechanisms, topology optimization, generative design and other reduction techniques. I am also struck by their potential repairability issues. I see the designs rely on every object segment for functioning and those segments are often unique, non-standard and thin. I see the goal of many compliant mechanisms is to reduce the need for maintenance which could prolong the mechanism's operational life and in the case of on earth production, a new additively manufactured device is often within reach. How do you feel about repairability? I look forward to your thoughts and resolutions on this topic. Very much enjoying these lectures!
At 13:20 when discussing the lattices you mention that there is an interesting paper on this topic. Could you tell me the title of the paper you were referring to?
Is there a web page or other source of information for the Handcuffs? I would be interested in checking that in detail. Awesome course BTW been really useful
Great content. One quibble though: your $1M US/lb figure for cost to orbit (20:09 ff) is out of date. Current costs are on the order of $10K/lb (so two orders of magnitude lower), and expected to continue falling over the next decade, mostly thanks to the use of reusable rockets and other engineering advances.
Jets can and sometimes do steer with differential thrust. Seems like most of this work is done by the Mormons. They are well acquainted with compliant behaviors in humans.
Thank you sir for releasing it on TH-cam. This is best complaint mechanism course!
holy shit man this is an insanely valuable course. I getting so many ideas for my designs. thank you.
This course is incredible. Exactly what I was looking for!
Thanks so much
Great video. Falling in love again with mech eng. Will definitely use that in my upcoming design..
*Introduction:*
* *[**0:00**]* Axiomatic design favors uncoupled design parameters and function requirements for simplicity and ease of fixing issues.
* *[**3:19**]* Nature, on the other hand, exhibits highly coupled and complex designs.
* *[**4:22**]* Rigid mechanisms are preferred over compliant ones due to their predictability and ease of design.
* *[**6:05**]* Advancements in design tools are making compliant mechanism design easier, leading to superior performance.
*Compliant Mechanism Applications:*
* *[**6:38**]* *Chainsaw Clutch:* Replacing multiple rigid parts and a spring with a single compliant piece, improving weight and ease of manufacturing.
* *[**9:04**]* *Zero Stiffness Joint:* Achieves high stiffness in all directions except for rotation, providing near-zero resistance in a specific rotational direction.
* *[**12:46**]* *Lattices:* Architected materials using zero stiffness joints, enabling complex kinematics with a single piece.
* *[**13:30**]* *Flexure Coupling:* Accommodates misalignment between rotating shafts without the drawbacks of rigid couplings (clatter, friction, wear).
* *[**14:56**]* *Overrunning Clutch:* Allows rotation in one direction only, engaging a ratchet mechanism when rotating in the opposite direction.
* *[**15:55**]* *Multistability:* Designs with multiple stable states, achieved by strategically utilizing compliance and strain energy.
* *[**17:40**]* *Lamina Emergent Mechanism:* 3D mechanisms created by deforming a single planar sheet, simplifying fabrication and assembly.
* *[**20:04**]* *Origami and Kirigami:* Art forms utilizing compliance and selective cuts to create compact deployable structures.
*Advantages of Compliant Mechanisms:*
* *[**22:26**]* *Reduced Part Count:* Often requiring fewer parts compared to traditional mechanisms.
* *[**22:26**]* *Easier Fabrication and Assembly:* Simplifying manufacturing and assembly processes, often resulting in monolithic designs.
* *[**23:45**]* *Lighter Weight:* Utilizing less dense materials and eliminating bulky components.
* *[**24:08**]* *Reduced Cost:* Lower material usage, simpler fabrication, and assembly contribute to significant cost reduction.
* *[**24:20**]* *Reduced Friction and Wear:* Eliminating sliding and pin joints, resulting in less friction, heat generation, and wear.
* *[**25:04**]* *Reduced Maintenance:* Fewer parts and lack of wear contribute to lower maintenance requirements.
* *[**25:56**]* *Energy Storage:* Natural ability to store strain energy, eliminating the need for additional springs.
* *[**26:14**]* *Scalability:* Easily miniaturized or scaled up without significant changes in design principles.
* *[**27:34**]* *Precision:* Achieving high precision due to the inherent deterministic nature of deformation.
*Conclusion:*
* *[**28:23**]* Compliant mechanisms offer numerous advantages over traditional rigid mechanisms, particularly in areas like cost, weight, and precision.
* *[**28:23**]* Understanding compliant mechanisms can unlock new design possibilities and lead to innovative solutions.
i used gemini 1.5 pro (2024-05-15)
Looking forward to your thoughts on reducing maintenance.
I am fascinated by compliant mechanisms, topology optimization, generative design and other reduction techniques. I am also struck by their potential repairability issues. I see the designs rely on every object segment for functioning and those segments are often unique, non-standard and thin.
I see the goal of many compliant mechanisms is to reduce the need for maintenance which could prolong the mechanism's operational life and in the case of on earth production, a new additively manufactured device is often within reach. How do you feel about repairability?
I look forward to your thoughts and resolutions on this topic. Very much enjoying these lectures!
At 13:20 when discussing the lattices you mention that there is an interesting paper on this topic. Could you tell me the title of the paper you were referring to?
22:30 advantages (disadvantages are start of next video)
26:13 civil engineering example
Where can I am able to get this lecture presentation (.pptx).
I am an Electrical engineer, but I highly appreciated Mechanical work
I am a mechanical engineer and I highly appreciate electrical work. It all has to work together in our modern electromechanical world!
@@chriskhacherian9943 🫰🏻🫰🏻🫰🏻
Is there a web page or other source of information for the Handcuffs? I would be interested in checking that in detail. Awesome course BTW been really useful
Great content. One quibble though: your $1M US/lb figure for cost to orbit (20:09 ff) is out of date. Current costs are on the order of $10K/lb (so two orders of magnitude lower), and expected to continue falling over the next decade, mostly thanks to the use of reusable rockets and other engineering advances.
Yeah these lecture slides were made 15 years ago so I expect those estimates will continue to get more and more out of date.
I have an Idea in my mind,
But I am troubling with its design.
The first thing I learned was that I've never used a fancy shower. thanks
Jets can and sometimes do steer with differential thrust. Seems like most of this work is done by the Mormons. They are well acquainted with compliant behaviors in humans.