## Stress analysis

Modelling 1.2 Experimental testing 2 Factor of safety 3 Load transfer 4 Uniaxial stress 5 **Plane** stress 6 **Plane** strain 7 Stress transformation in **plane** stress and **plane** strain 8 Graphical representation of stress at a point 8.1 Mohr's circle 8.2 Lame's stress ellipsoid

**wikipedia.org**| 2011/7/12 9:29:41

## Stress (mechanics)

In continuum mechanics , stress is a measure of the internal forces acting within a deformable body . Quantitatively, it is a measure of the average force per unit area of a surface within the body on which internal forces act. These internal forces are a reaction to external forces applied

**wikipedia.org**| 2011/5/18 18:35:03

## Stress intensity factor

opening ( tensile ) mode where the crack surfaces move directly apart. Mode II is a sliding (in **plane** shear ) mode where the crack surfaces slide over one another in a direction perpendicular to the leading edge of the crack. Mode III is a tearing ( antiplane shear ) mode where the crack surfaces

**wikipedia.org**| 2011/8/1 1:51:05

## Lame's stress ellipsoid

Once the equations of the ellipsoid is known, the magnitude of the stress vector can then be obtained for any **plane** passing through that point. To determine the equation of the stress ellipsoid we consider the coordinate axes taken in the directions of the principal axes, i.e., in a principal

**wikipedia.org**| 2011/7/19 22:44:57

## Virial stress

follows. The τ 11 component of stress is the force in the 1 direction divided by the area of a **plane** perpendicular to that direction. Consider two adjacent volumes separated by such a **plane** . The 11-component of stress on that interface is the sum of all pairwise forces between atoms on

**wikipedia.org**| 2010/9/25 20:35:38