How does thermal expansion effect the diameter of a hole?

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Thermal expansion affects the diameter of a hole in sheet metal by causing the material surrounding the hole to expand, which in turn increases the hole's diameter. The linear expansivity of the material relates the change in distance to temperature variations, allowing for calculations based on the initial diameter. When a circle is drawn on the metal, it expands uniformly with the material, illustrating the concept. The discussion emphasizes understanding the relationship between temperature changes and physical dimensions. Overall, thermal expansion must be considered in engineering applications involving metal components.
TheNaturalStep
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How does thermal expansion effect the diameter of a hole in a sheet metall,

When we r dealing with length it is quite easy since then it is only the propotion of change in lengt, and there r standard formulas for this ...

But how do you do for a hole in a sheet metal who are free to expand, let's say steel and the hole r 4 mm ...

Anyway you comments are dearly appriciated!
 
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TheNaturalStep said:
How does thermal expansion effect the diameter of a hole in a sheet metall,

When we r dealing with length it is quite easy since then it is only the propotion of change in lengt, and there r standard formulas for this ...

But how do you do for a hole in a sheet metal who are free to expand, let's say steel and the hole r 4 mm ...

Anyway you comments are dearly appriciated!
The linear expansivity relates the change in distance between two points to the change in temperature. Now, suppose you chose those two points such that the line joining them is the diameter of the hole. Can you now answer the question yourself.

P.S. Is this homework?
 
Draw a circle on the iron with a pencil.
What happens to the circle?
 
Thanks for your replies
no it isn't a homework

pam said:
Draw a circle on the iron with a pencil.
What happens to the circle?

it expands :), so what i do is to use the diameter as L cero.

Thank you :)
 
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