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Документ Computer and mathematical modelling of the operability of automotive parts using SOLIDWORKS and MathCAD(Одеський національний університет імені І. І. Мечникова, 2026) Rudyk, Oleksandr Yuhymovych; Yefimchuk, Mykhailo Mykolayovych; Pashchenko, Vladyslav YuriyovychA static analysis of the camshaft of the Cummins ISBe 6.7/QSB 6.7 engine was performed using SOLIDWORKS Simulation. During engine operation, forces from the valve train act on it, including spring forces, gas pressure, and other forces reduced to the tappet. It was determined that the maximum von Mises stress in the shaft is 3.762 MPa, which does not exceed the allowable values. Since the minimum safety factor is ( n = 127.6 ), which is significantly higher than the permissible value ([n] = 3), the shaft is considered operable. However, it may fail due to wear of the working surfaces. Therefore, the continuation of the study involves determining the wear resistance of the camshaft with mathematical processing of experimental results carried out using the MathCAD system.