Stress strain relationship

It is unique for each material and is found by recording the amount of deformation (strain) at distinct intervals of tensile or compressive loading (stress). These curves reveal many of the . One basic ingredient in the study of the mechanics of deformable bodies is the resistive properties of materials. One of the simplest tests for determining mechanical properties of a . A member is under axial loading when a force acts along its axis. The internal force is normal to the plane of the section and the corresponding stress the rod is experiencing is described as a normal stress.

The stress is obtained by dividing the magnitude of the resultant of the internal forces distributed over . STRESS - STRAIN RELATIONS. The most elementary definition of strain is when the deformation is along one axis: length original length in change strain = (1). When a material is stretche the change in length and the strain are positive. To measure the mechanical properties of any material , we find the relationship between the stress and strain by conducting a test. We use a specimen (sample) of the material and pull or push it until it fails (crushes or splits into two pieces).

Stress - strain Relationship. During this test we measure the applied force and the . This page provides an introduction to stress - strain relationships. They form the foundation for several rock properties such as elastic moduli (incompressibility), effective media theory, elastic wave velocity, and rock strength.