- #1
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?
what does this mean?
Last edited:
I'm trying to understand compressive strength and Euler stress for columns
- Thread starter lee123456789
- Start date
In summary, a column with a compressive strength of 220MPa and an Euler yield stress of 350MPa means that it will fail due to compression before it can buckle. The compressive strength is the resistance to downward forces, while the Euler stress is the resistance to sideways buckling. This difference in strength values indicates that the column will buckle at a higher load than it will fail due to compression. However, in some cases, the compressive strength and critical stress for the column may be the same value.
- #2
FEAnalyst
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That the column will fail due to compression before it can buckle.
- #3
lee123456789
- 93
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The compression strength is the downward forces applied resistances.FEAnalyst said:
so it will fail dowards before it will fail sideways basically?
- #4
berkeman
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- #5
lee123456789
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Thanksberkeman said:
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?
- #6
lee123456789
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in the reading material it uses compressive strength as the same value they use for critial stress for the column.
- #7
Lnewqban
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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.lee123456789 said:
1. What is compressive strength?
Compressive strength is the ability of a material to withstand compressive forces without breaking or deforming. It is typically measured in units of pressure, such as pounds per square inch (psi) or megapascals (MPa).
2. How is compressive strength determined?
Compressive strength is determined through testing, where a sample of the material is subjected to increasing compressive forces until it fails. The maximum force the material can withstand before breaking is then recorded as its compressive strength.
3. What is Euler stress for columns?
Euler stress, also known as buckling stress, is the maximum stress that a long, slender column can withstand before it buckles or bends under compressive forces. It is dependent on the material properties and the column's dimensions.
4. How is Euler stress calculated?
Euler stress can be calculated using the formula σ = (π^2 * E * I) / (L^2), where σ is the Euler stress, E is the modulus of elasticity of the material, I is the moment of inertia of the column, and L is the length of the column.
5. What factors affect compressive strength and Euler stress for columns?
The compressive strength and Euler stress of columns are affected by various factors, including the material properties, column dimensions, and boundary conditions. Other factors such as temperature, loading rate, and imperfections in the column can also impact these values.
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