Poisson’s ratio is negative for compressive … Calculating the Total Length when the Axial Strain and Change in Length is Given. Q4: Write the Poisson’s ratio formula . (6.8) ɛ ɛ lateral = − Δ t t = − Δ w w. The formula for calculating the lateral strain: ε l = Δd / d. Where: ε l = Lateral Strain. Multiply the poisson's ratio and axial stress as per the below lateral strain formula to find ϵ l. Ans:\(Poisson’s\;ratio=\frac{Transverse\;starin}{Longitudinal\;strain}\) Q5: State true or False. The lateral strain is defined as the strain experienced by a deformed body and is calculated as the ratio of change in the length of the body due to perpendicular force acting upon the body causing the deformation. L = ΔL / ε o L = 60 / 32 L = ΔL / ε o. Let’s solve an example; Calculate the total length when the axial strain is 32 and change in length is 60. When the thickness t becomes thinner by Δ t, we can consider lateral strain ɛlateral as: (6.7) ɛ ɛ lateral = − Δ t t. If the material is isotropic (i.e., its mechanical properties do not depend on the direction of measurement), we shall find the same strain in width. Ans: The ratio of transverse strain to longitudinal strain in the direction of the stretching force.

To compute for lateral strain, two essential parameters are needed and these parameters are change in diameter (Δd) and diameter (d). Δd = Change in Diameter.
This implies that; ε o = Axial Strain = 32 ΔL = Change in Length = 60.

1. tensile stress- stress that tends to stretch or lengthen the material - acts normal to the stressed area 2. compressive stress- stress that tends to compress or shorten the material - acts normal to the stressed area 3. shearing stress- stress that tends to shear the material - acts in plane to the stressed area at right-angles to compressive or tensile … Stress is the ratio of applied force F to a cross section area - defined as "force per unit area". Poisson's Ratio defines the ratio between the negative lateral strain and the longitudinal strain, so lateral strain can be calculated using: Where; L = Total Length ε o = Axial Strain ΔL = Change in Length.