#520 Define different types of stresses, strains

Define different types of stresses, strains - Mechanical Engineering 

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Free Chegg Question

Define different types of stresses, strains and material constants. Also solve 4 numerical problems on stresses and strains for multiaxial loading conditions.

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Longitudinal Stress:

When two cross-sectional areas of the cylinder are subjected to equal and opposite forces the stress experienced by the cylinder is called longitudinal stress.

Tensile Stress

If the deforming force or applied force results in the increase in the object’s length then the resulting stress is termed as tensile stress.

Compressive Stress

If the deforming force or applied force results in the decrease in the object’s length then the resulting stress is termed as compressive stress.

Shearing Stress or Tangential Stress

When the direction of the deforming force or external force is parallel to the cross-sectional area, the stress experienced by the object is called shearing stress or tangential stress.

Strain is defined as the ratio of change in dimension to the original dimension.

1. Normal strain: Deformations that are applied perpendicular to the cross section are normal strains.
2. Shear strain: Deformations due to tangential force applied on cross section is shear strain

Material constants:

Young's modulus is a measure of the ability of a material to withstand changes in length when under lengthwise tension or compression.

Poisson's ratio measures the deformation in the material in a direction perpendicular to the direction of the applied force.