Post - Processor

This part of the code processes the nodal data on primary variable (i.e., the displacement) supplied by the processor to obtain the secondary variables like the strain and stress. Strain and stress values are calculated at the Gauss points. Further, the displacement values at points, other than the nodes, if required, are calculated. Finally the nodal data on displacements and the Gauss- point data on strains and stresses are plotted. Thus, the post- processor can be divided into the following 3 steps :

(i) Calculation of strain and stress values at the Gauss points.

(ii) Calculation of displacements at point other than the nodes, if required.

(iii) Plotting of displacements, strains and stresses.

Algorithm for post-processor will be discussed in Lecture 16.