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    Impulse Shock Analysis of DMF Timing Ring in Vehicle Curb Crash Condition
    (Univ Osijek, Tech Fac, 2024) Imer, Caglar; Genc, Mehmet Onur
    The design of the powertrain components by considering inertial properties is important for sustainability and lightness. The highest shock impulses cause the instant negative transient torque proportional to the system inertia and acceleration. In this study, the vehicle having the Double Mass Flywheel (DMF) system subjected to a specific curb obstacle is investigated experimentally in an urban driving profile. The LTI (Linear-Time-Invariant) system of the crash mechanism in vehicle systems is presented as one-dimensional and three-dimensional models. The free-body-diagram (FBD) is presented in the curb crash condition, and the obtained equation of motion is then correlated via curb crash analysis and experimental test results. The analysis is performed firstly in curb crash explicit analysis, then the system modeling with the mathematical powertrain model approach is obtained via one-dimensional modeling to find the effective impact torque on the timing ring. Then, the component-based design is analyzed and correlated with real experimental test results. The experimental Timing ring removal test is then correlated with the curb crash explicit model representing the full vehicle. Thus, the obtained minimum Timing Ring slipping torque presents the required urban safety DMF production process needs. The impulse shock analysis of DMF timing ring due to curb crashes is presented, and preventive methods are indicated by considering urban driving profile conditions.