INTERNATIONAL TRACTORS LIMITEDHOSHIARPURFEA FINAL REPORT COVER SHEETDoc. No. QF/7.3/76Rev No.: BPage of

Project Report No: ITL/ R&D-T/FEA/134

Date: 31-10-2012

Part Name: Drive Shaft 3.5' (Rotavator) - Garden Trac.

Part Number: 10075099AA

Objective: To check the strength of Drive Shaft 3.5' (Rotavator) - Garden Trac.

Analysis/Observation: Linear Static Analysis of Drive Shaft was done corresponding to maximum rated power from the PTO shaft. One combined Load case was simulated i.e. T(Torsion due to Ft), Fr (Radial Force) and Ma (Moment due to Fa). All the loads are applied on center of the shaft. It was found to be safe in the applied load case.

Conclusion: Drive Shaft 3.5' (Rotavator) - Garden Trac. was found to be safe in the above mentioned load case.

NANA

Prepared By:Verified By:Checked By:Approved By:Received By:

Team Member CAEAnalystCAEHeadCAEHeadICMLR&DHeadEngineR&DHeadTractorR&DHeadDesign

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Summarized Linear Static FEA Results - Von-Mises Stress Drive Shaft 3.5' (Rotavator) - Garden Trac Load CaseStatic

T( Torsion) + Fr (Radial) + Ma( Moment due to Fa)

Loads 616660 N-mm + 7873.29 N + 137788.89 N-mm

Von - Mises Stress (N/mm2)226

Maximum Displacement (m)19

MaterialEN-19

Ultimate Tensile Strength (N/mm2)972

Yield Strength (N/mm2)635

Required Factor of Safety1.5

Maximum Allowable Stress (N/mm2)423

Available Factor of Safety2.80

CommentsSafe(Refer Fig.3 & 5)

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Summarized Linear Static FEA Results - Max. Shear Stress Drive Shaft 3.5' (Rotavator) - Garden TracLoad CaseStatic

T( Torsion) + Fr (Radial) + Ma( Moment due to Fa)

Loads 616660 N-mm + 7873.29 N + 137788.89 N-mm

Max. Shear Stress (N/mm2)190

Maximum Displacement (m)19

MaterialEN-19

Ultimate Tensile Strength (N/mm2)972

Yield Strength (N/mm2)635

Required Factor of Safety1.5

Maximum Allowable Shear Stress (N/mm2)245*

Available Factor of Safety1.93

CommentsSafe(Refer Fig.4 & 5)

*Allowable Shear Stress

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Technical SpecificationsThis Drive Shaft is to be used in the Rotavator 3.5' Garden Trac. Power at PTO is 14 HP, RPM of PTO is 540 and torque at PTO is 185 Nm.

Material SpecificationsDrive Shaft is made of EN - 19 whose material Properties are given below:-Modulus of Elasticity205000.00N/mm2

Poissons Ratio0.290

Mass Density7850.00kg/m3

Ultimate Tensile Strength972.00N/mm2

Yield Strength635.00N/mm2

Shear Strength368.00N/mm2

Loads & Boundary ConditionsDrive Shaft was modeled using Solid Parabolic Tetrahedron Elements. Total No. of Elements : 67201Total No. of Nodes : 106459

Following Load Case was simulated:-1. T, Fr and Ma act on Drive Shaft at center axis.

T, Fr and Ma act on Drive Shaft at center axis: - In this case Drive Shaft was fully constrained on surface where Bearings are fitted and a combined Load of . Tt, Fr and Ma (616660 N-mm, 7873.29 N, 137788.89 N-mm) were applied respectively corresponding to maximum power. The above mentioned loads act on Drive shaft which are transferred from the crown wheel due to the meshing of Crown Wheel and tail pinion. (Refer Fig.1&2).

Conclusion: Drive Shaft 3.5` (Rotavator) - Garden Trac. was found to be safe in all mentioned load cases.

References1. Hand Book Of Gear Design by Gitin M. Maitra.2. Textbook of Machine Design by R.S.Khurmi and J.K.Gupta.3. The Metal Data Handbook by Alok Nayar.

Figure 1: 3D Model of Drive Shaft (Rotavator 3.5') Garden Trac

Constrained in all direction

Figure 2: Meshed Model & Boundary Condition of Drive Shaft

226 N/mm2

Figure 3: Von-Misses Stress Plot of Drive Shaft

190 N/mm2

Figure 4: Shear Stress Plot of Drive Shaft

Figure 5: Deformation Plot of Drive Shaft