View source for Crystal Plasticity Assignment

=Crystal Plasticity=

This assignment was to study a single element FEM model with 1, 20 and 400 grains. In each case simulations were run for three different loading cases: tension, compression, and simple shear (the displacement for all of them set to 0.75). The results for each load were compared to the four different hardening values, as shown below.

[[Image:CryPlaTab.jpg|600px]]

The input files provide were Umat_xtal.v3r.for, Texture.txti, test.xtali. The path of the first file had to be modified and the number of grains in the other two also had to be adjusted. In the Abaqus input file the devpar value must be 70 * Ng where Ng is the number of grains. Once modified the boundary conditions and loading for each load case also had to be adjusted. 

==1 Grain==

The stress-strain curves and polefigures for the single grain simulation are shown in the images below. 

[[Image:Ten1.jpg|600px]]

[[Image:Comp1.jpg|600px]]

[[Image:Shear1.jpg|600px]]

[[Image:Pole1.jpg|600px]]

==20 Grains==

The stress-strain curves and polefigures for the 20 grains simulation are shown in the images below.

[[Image:Ten20.jpg|600px]]

[[Image:Comp20.jpg|600px]]

[[Image:Shear20.jpg|600px]]

[[Image:Pole20.jpg|600px]]

==400 Grains==

The stress-strain curves and polefigures for the 400 grains simulation are shown in the images below.

[[Image:Ten400.jpg|600px]]

[[Image:Comp400.jpg|600px]]

[[Image:Shear400.jpg|600px]]

[[Image:Pole400.jpg|600px]]