Kink/Buckling Homework: Calculating Maximum Force w/ E295 Steel

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To determine the maximum force on a steel shaft under axial pressure, it is crucial to assess whether the scenario meets Euler's criteria for buckling. For E295 steel, the critical slenderness ratio (Lambda_p) is 89, while the calculated Lambda value in this case is 125. If Lambda is less than Lambda_p, the Tetmajer method should be employed for calculations. The discussion also highlights that Lambda_p is an empirical value that varies for different steel grades, such as 104 for S235JR. Understanding these parameters is essential for accurate buckling analysis in engineering applications.
buell23
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Hello

I have a steel shaft which is loaded by a pressure force in axis direction.
If I want to calculate the maximum force I have to proof if this is a kink according to Euler or not.

For steel E295 there is a Lambda_p = 89

In my case I calculated that Lambda is 125 --> Lk/i --> i = sqrt(I/A)

Now my question is: What if Lambda is lower than Lambda_p?
What do I have to do in this case?
 
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buell23: How is lambda_p computed?
 
nvn said:
buell23: How is lambda_p computed?

Hi

Thats an empiric value for diverse steel. For S235JR for example 104.

But I looked for it in the internet. If Lambda < Lambda_p, we have to use way of Tetmajer.
 
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