added_displacement images

Author: AakashR003

iga/validation/cantilever_beam_multi_patch_non_linear/README.md

@@ -21,6 +21,8 @@ The cantilever beam is modeled using two connected NURBS patches with the Shell3
 
 The load-displacement curve obtained at the free end is shown in [figure](data/LoadStep_vs_Displacement_XZ.png). This shows a good agreement with the reference [1] - Figure 2a and Table 2. 
 
+![Displacement](data/Model.png)
+
 | Reference Force vs Displacement [1] | Force vs Displacement - From Kratos |
 | :---: | :---: |
 | ![Reference Force vs Displacement](data/Reference_LoadStep_vs_Displacement_XZ.png) | ![Kratos Force vs Displacement](data/LoadStep_vs_Displacement_XZ.png) |

iga/validation/cantilever_beam_multi_patch_non_linear/data/Model.png

@@ -21,6 +21,8 @@ The cantilever beam is modeled using a single NURB patches with the Shell3pEleme
 
 The load-displacement curve obtained at the free end is shown in [figure](data/LoadStep_vs_Displacement_XZ.png). This shows a good agreement with the reference [1] - Figure 2a and Table 2. 
 
+![Displacement](data/Model.png)
+
 | Reference Force vs Displacement [1] | Force vs Displacement - From Kratos |
 | :---: | :---: |
 | ![Reference Force vs Displacement](data/Reference_LoadStep_vs_Displacement_XZ.png) | ![Kratos Force vs Displacement](data/LoadStep_vs_Displacement_XZ.png) |

iga/validation/cantilever_beam_single_patch_non_linear/README.md

@@ -21,6 +21,8 @@ The plate is modeled using single trimmed NURBS patch with the Shell3pElement. T
 
 The displacement at point A is obtained as -6.3511 units, which is in agreement with the reference value of -6.3499 units.
 
+![Displacement](data/Model.png)
+
 ## References
 
 1. Michael Breitenberger, *CAD-Integrated Design and Analysis of Shell Structures*, PhD Dissertation, pp. 122–125. [Link](https://mediatum.ub.tum.de/doc/1311417/93268.pdf)

iga/validation/plate_with_hole_trimmed_patch_linear/README.md

@@ -22,6 +22,8 @@ The roof is modeled using single NURBS patch with the Shell3pElement. The CAD mo
 
 The displacement at mid of the free edge as -0.3068 units, which is in agreement with the reference value of -0.3024 units.
 
+![Displacement](data/Model.png)
+
 ## References
 
 1. Josef M. Kiendl, *Isogeometric Analysis and Shape Optimal Design of Shell Structures*, PhD Dissertation, pp. 51–52. [Link](https://mediatum.ub.tum.de/doc/1002634/464162.pdf)