I'm trying to understand compressive strength and Euler stress for columns

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SUMMARY

The discussion centers on the relationship between compressive strength and Euler yield stress in columns. A column with a compressive strength of 220 MPa and an Euler yield stress of 350 MPa indicates that it will fail due to compression before it buckles. This means that the column's ability to withstand downward forces is less than its capacity to resist sideways buckling. The distinction between compressive strength and Euler stress is crucial for understanding column stability and failure modes.

PREREQUISITES
  • Understanding of compressive strength in structural engineering
  • Familiarity with Euler's buckling theory
  • Knowledge of stress-strain relationships in materials
  • Basic principles of column design and failure modes
NEXT STEPS
  • Study the critical buckling load formula for columns
  • Learn about different types of column failure modes
  • Explore material properties affecting compressive strength
  • Investigate the impact of column geometry on Euler stress
USEFUL FOR

Civil engineers, structural designers, and students studying mechanics of materials will benefit from this discussion, particularly those focused on column design and stability analysis.

lee123456789
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A cloumn has a compressive strength of 220MPa, but its Euler yeild stress is 350MPa. its compressive strength is less than its euler stress.
what does this mean?
 
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That the column will fail due to compression before it can buckle.
 
FEAnalyst said:
That the column will fail due to compression before it can buckle.
The compression strength is the downward forces applied resistances.

so it will fail dowards before it will fail sideways basically?
 
lee123456789 said:
The compression strength is the downward forces applied resistances.

so it will fail dowards before it will fail sideways basically?
https://dailycivil.com/types-column-failure/

1619790220118.png


1619790245884.png
 
berkeman said:
Thanks
i was getting comfused because both had stress in them so thought it was the same
compressive strength = downward stregth resistance
Euler Stress = sideways to buckling

so by looking at the strength (220) and euler stress (350), it buckles higher than it does when compressing the column.
220 - 350 = 130MPa
is that normal for column?
 
in the reading material it uses compressive strength as the same value they use for critial stress for the column.
 
lee123456789 said:
Thanks
i was getting comfused because both had stress in them so thought it was the same
compressive strength = downward stregth resistance
Euler Stress = sideways to buckling
Force aligned with or perpendicular to the main axis of the column could be more accurate terms, since we not always have a vertical column that is supporting a load on top of it.
 

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