Thermal expansion of solid cylinder with blind hole

[spotfriends]

Friends,

I have a 20mm dia.,30mm height, solid rod of stainless steel with a hole of dia.5mm, depth of 15mm at the center of the rod.(solid rod with a blind hole). Means wall thickness is 7.5mm radially and 15mm thick at the bottom. When I heat the solid rod to a temperature, we are sure the hole dia. will also increase(expand) in size; say to dia.5.05mm. My question is, does the amount of material (radial thickness 7.5mm) influence the amount of hole expansion. Will the amount of material control the expansion-contraction ? my ideas is to play on the wall thickness to control the radial expansion...

SPOT

 

[fatra2]

Hi there,

From my understanding, it does not matter. If you have another rode with the same hole, but 100 or 1'000 times the rode size, you will have the same hole expansion.

Cheers

 

[astrokreng]

LIGHT: Thermal Expansion of Solid Cylinder with Blind Hole

Hello friends,

I am happy to see your interest in thermal expansion and its effects on solid cylinders with blind holes. I can certainly provide some insight into your questions.

Firstly, let's discuss the basic principles of thermal expansion. When a solid material is heated, its molecules vibrate more vigorously, causing them to take up more space. This results in an increase in the size of the material, known as thermal expansion. This expansion is uniform in all directions, including the diameter of a solid cylinder.

Now, let's consider the effect of a blind hole on the thermal expansion of a solid cylinder. As you correctly pointed out, the diameter of the hole will also expand when the solid cylinder is heated. This is because the molecules of the material surrounding the hole will also vibrate and take up more space, causing the hole to increase in size.

To answer your question, yes, the amount of material (radial thickness) will influence the amount of hole expansion. This is because a thicker wall will have more molecules that can vibrate and contribute to the overall thermal expansion. However, the difference in expansion between a 7.5mm thickness and a 15mm thickness may not be significant enough to control the expansion-contraction of the hole.

In order to control the radial expansion of the hole, you may need to play with the material properties, such as its coefficient of thermal expansion, or use different materials with varying thermal expansion rates. Additionally, the temperature at which the cylinder is heated will also play a role in the amount of expansion.

I hope this helps to answer your questions and provides some direction for your experiments. As always, further research and testing may be necessary to fully understand the effects of thermal expansion on solid cylinders with blind holes. Keep exploring and learning!