Q2 - 2D finite element method (10 marks) A square (1 1 m) is discretised into two triangular elements. The chosen elements are either CST (Fig. 3) or LST (Fig. 4) elements. The corresponding displacement vectors (d) are provided below d={0 1-4-1-30-12)" (0,0) B(1.0 (0,0) B(1,0 0/0 Figure 3 d={0 1-4-1-30-12-30.5 2 0.5 4-11-0.5 1.5 0)" Figure 4 a. Sketch the displacement distributions u and v for both CST and LST elements. b. Calculate the stiffness matrices for the CST elements using MATLAB. Provide fully commented code, explaining the use of each command. Sketch the strain yy on the CST elements. Note that some essential matrix calculations for strain-displacement are needed C. Q2 - 2D finite element method (10 marks) A square (1 1 m) is discretised into two triangular elements. The chosen elements are either CST (Fig. 3) or LST (Fig. 4) elements. The corresponding displacement vectors (d) are provided below d={0 1-4-1-30-12)" (0,0) B(1.0 (0,0) B(1,0 0/0 Figure 3 d={0 1-4-1-30-12-30.5 2 0.5 4-11-0.5 1.5 0)" Figure 4 a. Sketch the displacement distributions u and v for both CST and LST elements. b. Calculate the stiffness matrices for the CST elements using MATLAB. Provide fully commented code, explaining the use of each command. Sketch the strain yy on the CST elements. Note that some essential matrix calculations for strain-displacement are needed C