## Finite strain theory

In continuum mechanics , the **finite strain** theory also called large **strain** theory , or large deformation theory , deals with deformations in which both rotations and strains are arbitrarily large, i.e. invalidate the assumptions inherent in infinitesimal **strain** theory . In this case,

**wikipedia.org**| 2011/2/1 8:25:43

## Strain energy density function

A **strain** energy density function or stored energy density function is a scalar valued function that relates the **strain** energy density of a material to the deformation gradient . where is the (two-point) deformation gradient tensor , is the right Cauchy-Green deformation tensor

**wikipedia.org**| 2010/9/25 14:09:21

## Patch test (finite elements)

The patch test in the **finite** element method is a simple indicator of the quality of a **finite** element, developed by Bruce Irons . The patch test uses a partial differential equation on a domain consisting from several elements set up so that the exact solution is known. Typically, in mechanics

**wikipedia.org**| 2010/9/25 8:19:55

## VisualFEA

VisualFEA is a full-fledged **finite** element analysis program with many easy-to-use but powerful features, which can be classified largely into four parts: **finite** element processing, pre-processing, post-processing and educational simulation. All the functions are integrated into a single executable

**wikipedia.org**| 2011/9/4 2:57:48

## Infinitesimal strain theory

In continuum mechanics , the infinitesimal **strain** theory , sometimes called small deformation theory , small displacement theory , or small displacement-gradient theory , deals with infinitesimal deformations of a continuum body . For an infinitesimal deformation the displacements and the

**wikipedia.org**| 2011/4/25 5:06:26

## Stress analysis

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 8.3 Cauchy's stress quadric

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