Question

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8. (6) Use the following information to s of-200 owing information to solve the following. Go is axial on top, with a microstrain of 300 G7 is transverse on top with a microstrain of -200 Cantilever Beam Data Sheet BOTTON OPPOSITE 66, 67 E 6. the beam shown, constrained on the right with loads pulling down on the left, determine the microstrains at G8 (axial) and G9 (transverse) on the bottom of the beam. (hint: the sig matters) b. What is Poisson's ratio for the material?

Answer 1

Answer for b.

the ratio of transverse contraction of a material to the longitudinal extension strain in direction of stretching force is the poisson ratio for material.

It is negative for compressive deformation whereas for tensile it is positive

Most materials have Poisson's ratio values ranging between 0.0 and 0.5.

Rubber has a Poisson ratio of nearly 0.5. Cork's Poisson ratio is close to 0

poisson ratio has no units