Develop a Model of the Bike Crank in ANSYS APDL - Engineering Assignment Help

Assignment Task

Assignment Tasks:
For this assignment, you must:

1. Experimental: You will need to carefully watch the demonstration of the experiment using the apparatus which would normally be undertaken in your workshop (or watch a recorded video). The results of this experiment are given in the Experimental section. This will give you information for your validation step.
a. The strain rosette results need to be converted into an appropriate form for comparison with analytical and FEA model results.

2. Analytical: Produce an analytical solution for the model. This includes:
a. Develop appropriate load diagrams
b. Determine the stresses/strains at points coincident with the strain rosettes in the experimental apparatus.

3. FEA Model: Develop a model of the bike crank in ANSYS APDL. You must:
a. Submit a working APDL simulation file with appropriate boundary conditions, element choice and mesh.
b. Justify your boundary conditions, element choice and meshing approach in your report.

4. Model Verification/Validation: Compare your APDL model to your calculated and experimental models by:
a. Perform a convergence study, or studies on your model. These must be performed at appropriate points on the model and use appropriate convergence metrics/criteria. Discus (comment on and justify any differences between the results of the models).
b. Compare your FEA Model to analytical and experimental data using appropriate metrics.
c. Discuss the Verification and Validation of your model
i. Does the model behave how we expect it to?
ii. Is your FEA Model an appropriate representation of the real system?
iii. Are there any areas of your model which do not represent the behaviour of the real system? Identify them and comment on their effect on the usefulness of your model.

5. Fit-for-Purpose: What is the current safety factor of the crank?
a. The crank should be designed with a safety factor of 4 under a load of 50 kg. What changes would you make to the design of the crank to achieve this?
b. Confirm that your updated design satisfies a safety factor of 4 using your FEA model and appropriately show the results.

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