deformation caused by further increases in load or stress beyond the yield

Deformation caused by further increases in load or

This preview shows page 1 out of 1 page.

deformation caused by further increases in load or stress beyond the yield point of a certain material will be plastic permanent. The Young modulus (elastic modulus) is the measurement of the stiffness of a given material. It is defined as the limit for small strains of the rate of change of stress with strain. Besides using the stress and strain graphs, the Young modulus of any material can also be determined by using the deflection of the material (beam) when subjected to load. The deflection of a beam depends on its length, its cross-sectional shape, the material, where the deflecting force is applied, and how the beam is supported. The bending of a beam is an example of the application of Hooke’s law, which states that when an elastic body is deformed in any way the strain (which is a measure of the deformation) is directly proportional to the stress (which depends upon the deforming force), provided the body is not strained beyond its elastic limit. There are three distinct types of strain: longitudinal strain, in which a body is lengthened or shortened along one dimension; shear, in which contiguous planes in the body are caused to slip over each other, resulting in a change of shape; and volumetric strain, in which the volume is increased or decreased, the shape being unaltered. In each case the numerical value of the ratio between the stress and the strain depends upon a physical property of the material called an elastic modulus. . (BPEARSON, 2009). BPEARSON (2009). Deflection of a Beam – Young’s Modulus. Retrieved from
Image of page 1

You've reached the end of your free preview.

Want to read the whole page?

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture