Week 8 Worm Gear Challenge

Objective:

To perform a transient structural analysis on a worm gear assembly. For the academic version, you need to cut the gear by half so as to bring the model within limits. For the challenge, you have to rotate the worm so as to get to almost end of the half cut and get results for Equivalent stress, Equivalent elastic strain and the total deformation in the model.

Procedure:

Import geometry<Edit geometry in spce claim<in this use plane at the middle of the geometry<cut the half of the portion.

select model and open model in mechanical APDL .

go to connections< insert contact between worm and gear <contact type as friction less

create revolute joint for worm as body to ground and revolute joint for gear as body to ground.

generate mesh with size of 1mm with adaptive sizing yes

In analysis settings number of steps 15 initial time step=0.2,minimum time step=0.2,maximum time step=0.5,then weak springs as programme controlled,in output controls all options to be yes except contact miscellenious no

create joint load for worm with tabular data.

Results:

Total Deformation:

equivalent stress:

Equivalent strain:

conclussion:in this analysis we found that maximum total deformation is 14.82 mm

maximum Equivalent stress is 2023 Mpa

maximum Equivalent strain is 0.010679