When the composite brick is subjected to force of 1.77 MPa, three dimensional
stress and strains arise. These are usually explained with an equivalent stress which
is represented as the von Mises stress distribution. The CATIA finite element analysis
computes the von Mises stress values and displacements; it displays the
deformed mesh, showing the stress distribution on the surface in both numerical
and color-coded formats (Fig. 3a and b). Even though none of the principal stresses
exceeds the yield stress of the material, von Mises stress may exceed the yield stress
of the material; hence this stress brings the brick to failure. In this study we have
simulated the von Mises stress distribution on the whole composite brick and recorded
the maximum stress and maximum displacement for each model. Structural
performance of the brick of differing models was then compared on the basis of
maximum von Mises stress. The obtained von Mises stress and deformation values
are given in Table 3 and Figs. 4a and 4b