Challenge

Week 8 Worm Gear Challenge

OBJECTIVE :-

  • To obtain the Equivalent stress,Equivalent elastic strain and total deformation by perform a transient structural analysis on a worm gear assembly

PROCEDRE:-

  • Open ansys workbench R2
  • select transient structural analysis
  • rename the work
  • open engineering data section ,add required materials like structural steel
  • import the geometry
  • open ansys mechanical
  • rename geometry parts as suitable
  • select structural steel for all parts
  • rename default contacts in connection section based on defenition and flip its contact and target
  • insert body to ground revelute joint , select its scope by selecting inside surface of the gear
  • insert body to ground revelute joint , select inside surface of the worm
  • in mesh section turn on adaptive sizing and input element size as 5 mm
  • in analysis section input number of step as 15
  • change weak spring to program controlled
  • keep large deflection on and turn on auto time step
  • for 2 to 15 step turn on carry over time
  • insert joint load in transient section ,select joint as revelute -Ground to worm
  • select type as revelution .input data through tabular data
  • run solve

RESULT :-

ALL PARTS MADE UP OF STRUCTURAL STEEL :-

TOTAL DEFORAMTION :-

EQUIVALENT STRESS :-

EQUIVALENT STRAIN:-

TABULATION :-

TOTAL DEFORMATION (mm) EQUIVALENT STRESS(MPa) EQUIVALENT STRAIN(mm/mm)
CASE I 14.706 1178.2 0.0064543

CONCLUSION :-

  • Total deformation is 14.706 mm
  • Equivalent stress in worm gear model is 1178.2 MPa
  • Equivalent strain is 0.0064543
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