Calculating Critical Buckling Load for 3D Rectangular Beam - Ixx or Iyy?

In summary, Quick Euler buckling is a sudden collapse of a slender column or structural element under compressive load due to elastic instability. It differs from regular buckling in that it occurs suddenly and is caused by exceeding a critical load. Factors such as material properties, column length, and applied load contribute to its occurrence. Quick Euler buckling can be prevented by using methods such as increasing cross-sectional area or reinforcing the material. It is important in the design of various structures, vehicles, and mechanical systems to ensure safety and stability.
  • #1
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I should probably know the answer to this but anyway...

I want to compute the critical buckling load for a simple 3D rectangular cross-section beam, though the thickness in the z-direction is small.

attachment.php?attachmentid=24439&stc=1&d=1268832382.jpg


If a load is applied in the negative y direction, which direction do I use for my second moment of area value? Ixx or Iyy?

Thanks for any info.
 

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  • #2
How about trying both, then using the results to decide what buckling plane is most likely?
 

1. What is quick Euler buckling?

Quick Euler buckling, also known as Euler buckling, is a phenomenon in engineering and physics where a slender column or structural element suddenly buckles or collapses under a compressive load. This is caused by the elastic instability of the material, which causes it to deform and fail at a lower load than expected.

2. How is quick Euler buckling different from regular buckling?

Quick Euler buckling is a type of buckling that occurs suddenly and without warning, while regular buckling is a gradual process. Quick Euler buckling is caused by a critical load being exceeded, whereas regular buckling occurs when the load gradually increases and the material becomes more and more unstable.

3. What factors contribute to quick Euler buckling?

The main factors that contribute to quick Euler buckling are the material properties, column length, and the applied compressive load. A material with a lower modulus of elasticity or a longer column length will be more susceptible to quick Euler buckling. Additionally, an increase in the compressive load will increase the likelihood of quick Euler buckling occurring.

4. How can quick Euler buckling be prevented?

To prevent quick Euler buckling, engineers and scientists can use various methods such as increasing the column's cross-sectional area, decreasing its length, or reinforcing the material with additional support structures. It is also important to carefully consider the material properties and applied loads during the design process to avoid potential quick Euler buckling issues.

5. What are some real-world applications of quick Euler buckling?

Quick Euler buckling has important implications in the design of various structures, including buildings, bridges, and other load-bearing structures. It is also a critical concept in the design of vehicles, such as airplanes and cars, as well as in the construction of machinery and other mechanical systems. Understanding quick Euler buckling is essential for ensuring the safety and stability of these structures and systems.

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