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

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SUMMARY

The discussion focuses on calculating the maximum force on a steel shaft made of E295 steel, specifically addressing the conditions under which buckling occurs. The critical parameter, Lambda_p, for E295 steel is established as 89, while the calculated Lambda value is 125. When Lambda is lower than Lambda_p, the Tetmajer method must be employed to determine the buckling behavior. The conversation highlights the importance of understanding these parameters for accurate engineering calculations.

PREREQUISITES
  • Understanding of Euler's buckling theory
  • Familiarity with the properties of E295 steel
  • Knowledge of the Tetmajer method for buckling analysis
  • Ability to calculate moment of inertia (I) and cross-sectional area (A)
NEXT STEPS
  • Research the Tetmajer method for buckling analysis
  • Study the properties and applications of E295 steel
  • Learn about Euler's critical load formula
  • Explore the implications of different Lambda values in structural engineering
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Mechanical engineers, structural engineers, and students studying materials science or mechanical design who are involved in buckling analysis and structural integrity assessments.

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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