This investigation demonstrated key areas of Finite Element Analysis through a bracket problem using ANSYS and Workbench in conjunction with a knowledge of various subjects discussed in the FEA course.
Consideration taken for modelling included; analysis type, problem type, element type, DOF, boundary conditions, mesh intensity plan.
Geometry and global mesh were developed (below):
The model was constrained at the wall and loads were placed on the flat surface and circular hole
Max displacement at free end = 405E-06 in.
Max Mises stress occurrs at the bottom right fillet of the slot = 895.236 psi.
Min Mises stress occurs at the free end of the bracket = 3.6669 psi.
Mesh Sensitivity analysis:
Global element size reduced from 0.2 to 0.1 and refinement is produced around stress concentration areas (sharp corners).
Max Mises stress increased 895.236 psi to 947.769 psi (increasing ~ 6%).
Max deformation changes negligibly.
Solution compared to hand calculations to provide evidence and similarity when verifying the results.
Calculations verify ANSYS experimental results.
- Introduction to ANSYS
- Understanding of FEA problems and need to verify with calculations
- Understanding of benefits of mesh sensitivity and refinement.