Individual PowerPoint GIF-animations from my e-modules
Individual Flash-player animations (not for PowerPoint) can be downloaded from this site.
Deformation and strain deserve numbers, and calculating strain using the deformation matrix is easy with a spreadsheet. Here are some that lets you calculate the eigenvectors,
eigenvalues, principal strain axes, strain ratio, kinematic vorticity, offset across a shear zone etc. of simple plane strain deformations. NB change numbers in red only.
Cambridge University Press