Understanding Buckling
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- เผยแพร่เมื่อ 16 พ.ค. 2024
- Get access to the companion video on self-buckling on Nebula - nebula.tv/videos/the-efficien....
Buckling is a failure mode that occurs in columns and other members that are loaded in compression. It is a sudden change deformation that occurs at a certain critical load.
In this video we explore some key topics relating to buckling, including Euler's formula, the effects of end conditions, and other aspects like the effect of column slenderness, inelastic buckling and the buckling of shells and plates.
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For further reading on buckling I'd recommend the following:
- Mechanics of Materials - Goodno & Gere (introduction)
- Stability of Structures: Elastic, Inelastic, Fracture and Damage Theories - Bažant and Cedolin (more advanced)
- Theory of Elastic Stability - Timoshenko and Gere (more advanced)
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The Efficient Engineer is a channel aimed at mechanical and civil engineers. The mission is to simplify engineering concepts, one video at a time!Follow me on Twitter: / efficiengineer
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If you would like to support the channel, please consider becoming a Patron - / efficientengineer . This will allow me to create more high quality videos covering a range of engineering topics.
Thanks for watching! Here's a link to the short video on Euler and the Self-Buckling Problem on Nebula - nebula.tv/videos/the-efficient-engineer-euler-and-the-selfbuckling-problem!
You are saying “ Pcr doesn’t depend on the strength of the material at all” but it is a factor of E and E is the indicator of the material strength
E represents the stiffness of the material, it doesn’t tell you anything about the strength of the material.
@@TheEfficientEngineer Thank you for your comment and taking the time. You're right that E indicates material stiffness, not strength. However, in column buckling, E is crucial for determining buckling load, albeit not directly indicating the material's strength. While it doesn't predict strength beyond its elastic limit, E is essential for understanding material behavior up to that point. Thank you so much for the Video it is very insightful and thank you for the promotion as well really Fantastic work.
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Just look at Timoshenko's "Theory of elastic stability"...This video, while very good, does not bring anything new and everything is covered in any half-decent engineering course.
@@les8489 its not about bringing anything new or just memorising formulas or knowing how to derive them, its about bringing out the beauty of it and making it conceptual and easy to understand. This channel does that for us.
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Agree. By watching this video one does not gain any knowledge related to the subject. To understand it you have to review course in Theory of Elasticity. Timoshenko is good, but N.Muskhelishvili book offers much rigorous approach.
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Great way of explaining various factors that influence buckling. Reminds me of my projects the buckling of the thin shell due to geometric imperfections
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Another great video, thanks so much. As a practicing engineer it's always interesting to go back to fundamentals and the history of how the design and analysis techniques developed. A particularly pleasant surprise was seeing the offshore pipeline lateral buckling example in this video as that's the field I work in and didn't expect it to see it illustrated to beautifully. I'm very impressed with the attention to detail with the animation of the mode 3 buckle shape and the formation of the soil berm at the buckle crown.
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In Eurocode 3, EN 1993, there are classified into 4 categories according to buckling curve. In many cases, buckling and fatigue govern structural design rather than material yield strength. There is no better way to understand it than your video! Superb! I've got a lot of details on how to derive the buckling curves from their origin. Excellent video on engineering!
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Really enjoyed studying this topic, specially thin plate buckling. Great video!!
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Perfect explanation and summary for Buckling.
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Something that's probably not very intuitive: A pipe can even buckle when under tension while supporting a compressive load. We did experiments at the university showing that, but I kinda forgot the exact reason for it.
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topic suggestion: Torsional Buckling
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Great video about buckling. Euler was a genius, buckling was a tinny amount of his work but with great effect. Been able to predict buckling failure can save work, money and mostly save lives. Sadly most scientist that mention Euler never mention his development of the buckling equation.
In my career as a structural analyst I always dealt with buckling.
A thin-walled open cross-section (11:34) beam, or column, can also fail at the flanges and at the center member. In aircraft structural analysis it is known as "crippling". Crippling can occur in longitudinal member between frames.
Also another way that a slim member can fail in buckling is called "longitudinal buckling". It can be loaded in a concentrated moment at the ends or as a distributed load as in floor beam.
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Thanks for the video. The example about the buckling of rail tracks at the begging is checked by structural engineers using the track bridge interaction theory (i am currently designing for this) as well as the track engineers when they design track systems
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