PSI - Issue 14

Abhijit Kulkarni et al. / Procedia Structural Integrity 14 (2019) 158–167 8 Abhijit Kulkarni a , Rushikesh Nanaware b , Akhilesh Kulkarni c , Vikrant Garud d / Structural Integrity Procedia 00 (2018) 000–000

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articulation angle from 0 to 47°. Owing to the symmetry of the mechanism, simulation for right turn was not performed. With the values of the synthesized mechanism shown above, the hydro-mechanical steering system was modelled in MSC-ADAMS and relevant constraints has been used in the model to simulate actual degrees of freedom for the system.

Table 3. Angles before and after optimization Angles (Degrees) Before (mm)

After(mm)

249 187 154 0.5

249 187 154 0.5

341.07

341.07

31

40

110

101.02

170.57

164.6

Fig. 7. (a) ADAMS Fifth Wheel mechanism

(b) ADAMS rear mechanism.

6. Results and Discussion Results from ADAMS were exported to MS Excel and relevant graphs were drawn. The performance of the optimized mechanism was compared with that of the existing steering design (refer Table 2 and 3) and the results are listed below.  Steering Errors:  Tie Rod Displacement Error: Original and optimized errors in articulated angle i.e. angle of tires are simulated with help of ADAMS software and results are shown below for left and right wheel of axle – 1 & 2 in Fig. 8 & 9.