answersLogoWhite

0


Best Answer

If you stretch an object, each side changes length by an amount due to strain,e, so the new length is L(1+e)..Each side normal to the stretch direction contracts by an amount equal to poisson ratio x the stretch.

If you calculate the change in volume V you get

dV = Ve(1-2u)

Ay u = 0.5 there is no volume change (incompressible); if it were greater than 0.5 volume would decrease which is unlikely. If it is 0, there is no lateral contraction and volume increases. If less than 0 the object will actually expand laterally rather than contract, and some special materials do this. Poisson ratio can be as low as -1, but most common materials lie between 0 and 0.5

User Avatar

Wiki User

12y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why poisson's ratio cannot be greater than 0.5?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Can poisson's ratio be greater than 1?

yes * * * * * No, it cannot be greater than 0.5 See link for more details.


Where is the greatest ratio of women to men?

In a room in which there was only one woman and no men, the ratio would be infinite. You cannot get any greater than that!


Prove that poissons' ratio is 0.5?

since k=E/3(1-2n): where k=bulk modulus and n=poision's ratio it can be seen that value of poision's ratio can't be smaller than 0.5 in order to keep k be +ve.hence poision's ratio is 0.5


Where would you find a point with a ratio greater than 1?

Any point where x/y is greater than 1 has a ratio larger than one. For example, the point (2, 1) has a ratio of 2:1, or 2. (3, 1) has a ratio of 3, etc.


Why sine of an acute angle cannot be greater than 1?

You can only find the inverse of sine for number less than or greater than 1. An improper fraction is not acceptable either because the ratio is opposite over hypotenuse. The hypotenuse will always be the longest, so there you go.


Is the tangent ratio number is greater than one?

The tangent ratio can take any real value.


How do you calculate compression ratio?

compression ratio = compressed size / uncompressed size the ratio should be between 1 and 0 (multiply with 100 to get the ratio in percent) a ratio greater than 1 means, the compressed size is actually greater than the uncompressed size a ratio just below 1 means bad compression the lower the ratio, the better the compression


What is 'portrait orientation'?

A vertical to horizontal ratio greater than 1.


Why can't the probability be greater then one?

A probability of 1 means something will definitely happen. There cannot be a greater certainty than that, so probability cannot be greater than 1.


How do you compare a ratio using division?

Divide the first ratio by the second. If the answer is less than 1 then the first ratio is smaller. If the answer is equal to 1 then the two ratios are equal. If the answer is greater than 1 then the first ratio is larger.


What numbers are greater than -1 and less than -1?

0


When chip thickness ratio greater than 1?

When Rack angle is zero... Chip thickness ration is going to be greater.