Week 2 Bevel Gear Challenge

GRID DEPENDENCY TEST:

Grid dependency test is a method for determining the optimum mesh size for an entity in order to get the accurate result and beyond which the results show the same values or precise.

OBJECTIVE:

To analyse the bevel gear and perform the grid dependency test for 3 different mesh size and compare the results.

METHODOLOGY:

• First the geometry is imported and edited in the spaice claim.
• the unwanted part of the geometry is removed which is of no interest.
• 
• material is assaigned to the bevel gear geometry and frictional contact is defined between the two faces of the gears which will contact each other.
• the revolute joints are given to the each gear .
• 
• the global mesh size was kept 4mm and face sizing of 1.75mm was given to the faces of the gears which are in contact.
• 
• the analysis was performed in 6 steps and the min time step of 0.005s and max time step of 1s was given for each step.
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• the joint loads of rotation and moment for each step were given to small gear and big gear.
• 
• the solution was converged and resutls for each mesh size were found.

FOR 4mm MESH:

FOR 5mm MESH:

FOR 6mm MESH:

CASE	Mesh size	Equivalent stress(Mpa)	Equivalent strain	Total deformation(mm)
1	4mm	4.0933	2.746e-5	47.882
2	5mm	2.773	1.824e-5	47.882
3	6mm	4.459	2.733e-5	47.882