OBRABOTKAMETALLOV Vol. 23 No. 3 2021 MATERIAL SCIENCE EQUIPMENT. INSTRUMENTS 5 3 From fig. 11 it is clear that the maximum stresses occur at the corner of the crankshaft when a load of 320 tons is applied, with the maximum shear stress is 98.124 MPa and the minimum shear stress is 0.2156 MPa. Fig. 11. Maximum shear stress in optimized crankshaft Ta b l e 2 Structural analysis results of optimized crankshaft Total Displacement, mm Von-Mises Stress Theory, MPa Max Principal Stress, MPa Max. Shear Stress, MPa 0.0463 191.34 189 98.124 Ta b l e 3 Comparison of the existing and optimized crankshaft Existing crank shaft New developed crank shaft Percentage wise Improved results Total Displacement 0.050 mm 0.0463 mm 7.45 % Von-Mises Stress Theory 162.05 MPa 191.34 MPa 15.30 % Max Principal Stress 132.01 MPa 189 MPa 30.15 % Max. Shear Stress 93.008 MPa 98.124 MPa 5.21 % Conclusion From the results obtained by the Finite Element Method both for the existing design of the crankshaft and for the optimized one, it can be concluded that the optimization of the design of the crankshaft of a mechanical press leads to an increase in its performance in terms of reducing the bending deviation by 4 µm compared to the previous design. In addition, according to Table 3, the optimized crankshaft design shows improved von Mises results of 15.30 %, maximum principal stress of 30.15 %, and maximum shear stress of -5.21 %. References 1. Montazersadgh F.H., Fatemi A. Dynamic load and stress analysis of a crankshaft. SAE Technical Paper. SAE International, 2007. DOI: 10.4271/2007-01-0258. 2. Shahane V.C., Pawar R.S. Optimization of the crankshaft using finite element analysis approach. Automotive and Engine Technology, 2017, vol. 2 (1–4), pp. 1–23.
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