Width Change
If a rod with diameter (or width, or thickness) d and length L is subject to tension so that its length will change by ΔL then its diameter d will change by:
The above formula is true only in the case of small deformations; if deformations are large then the following (more precise) formula can be used:
where
- is original diameter
- is rod diameter change
- is Poisson's ratio
- is original length, before stretch
- is the change of length.
The value is negative because it decrease with increase of length
Read more about this topic: Poisson's Ratio
Famous quotes containing the words width and/or change:
“Newly stumbling to and fro
All they find, outside the fold,
Is a wretched width of cold.”
—Philip Larkin (1922–1986)
“Each one of us must carry within the proof of immortality, it cannot be given from outside of us. To be sure, everything in nature is change but behind the change there is something eternal.”
—Johann Wolfgang Von Goethe (1749–1832)