The main objective of the assignment is to create a 3-D finite shell element model of a cantilevered structure that is formed by welding two steel channel sections of identical cross-section at an angle of 120˚ to each other, In order to analyse the 3-D shell elements of the cantilevered under two different load cases, the first case is to divide the load equally between the two legs of the channel section, and the second case is to apply all of the load in one leg.
Also, to compare the maximum deformation, stress and error estimation of cantilevered in the two cases by generating the deformed shape plot, the von Mises stress plot and structural energy error plot. The structure of this report consists of four sections, …show more content…
Figure 7: element solution plot of von Mises stress (N/m²). Figure 8: the structural energy error plot of the cantilevered model.
2. Part (B) Full Load:
Figure 9: deformed shape plot of the cantilevered model (m).
Figure 10: element solution plot of von Mises stress (N/m²). Figure 11: the structural energy error plot of the cantilevered model.
Discussion and Conclusion:
Part (A) Half Load
Figure 6 from the result section shows the deformed shape plot of the cantilevered model. The model deforms with a value of 0.170796 m when the number of elements was 432. When the number of elements were increased to 6912, the model converged and the deformation value found to be 0.153114 m.
Figure 7 shows the element solution plot of von Mises stress (N/m²) of the cantilevered model. The stress found to be 1.80E+08 N/m² when the number of elements was 432. The model converged at 6912 number of elements and the stress value found to be 2.91E+08 N/m², as shown in table 2.
Figure 8 shows the structural energy error plot of the cantilevered model. The error found to be 3.5661 at 432 number of elements. As the number of elements got increased to 6912, the error value decreased to 0.4131 and the model