Week 2 Bevel Gear Challenge

Bevel Gear Challenge

Objective:

To perform grid dependency test on bevel gear with base mesh size of 6,5 and 4 mm

Theory:

Grid independent is a very important issue in numerical simulation. Grid-independent means calculational results change so little along with a denser or looser grid that the truncation error can be ignored…

Objective:

To perform grid dependency test on bevel gear with base mesh size of 6,5 and 4 mm

Theory:

Grid independent is a very important issue in numerical simulation. Grid-independent
means calculational results change so little along with a denser or looser grid that the
truncation error can be ignored in numerical simulation.
Bascially a mesh convergence test should mean computing the solution on successively
finer grids. The difference between two refinements is usually taken as a measure of the
accuracy of the coarser of the two.Usually a calculation should approach the correct
answer as the mesh becomes finer, hence the term grid convergence.
It is also known as mesh convergence test.

Geometry:

Static structural:

selection of the step as follows

1. Material selection
2. Geometry
3. Model
4. Setup
5. Solution
6. Result

Material selection:

Element size :4mm

Geometry

Model:

to open the model browser:

give the connection as mention in the image :

joint for the both gear:

for the big gear:

for the small gear:

mesh sizing:

4mm as per requirement :

also give the face sizing :

now generate the mesh :

give the roation joint :

moment joint :

magnitude in the tabular form

values are shown in image.

for the solution :

Equivalent stress: animation video

i have attached animation file for the stress strain and total deformation

name as :

stress: b_l_4_stress

strain: b_l_4_strain

total deformation : b_l_4_total_deformation

result image for the bevel gear as bellow

total deformation:

strain:

stress:

Comparison :

Mesh size Equivalent stress (Mpa) Deformation

6 3.735 64.5

5 5.62 64.5

4 4.0026 64.5

Conclusion:
Deformation stays unchanged with respect to mesh size .
Stress value gets more accurate with respect to mesh size .
Mesh dependency test performed successfully .

note:

file name for three case: bevel_gear_submissionfile.zip