Abstract
Based on the practical working state and load conditions of a car, the stress-strain and its strength in static and dynamic state of a new torsional vibration damper were calculated and analyzed with the finite element theory and tools, providing reliable data and a simple and accurate research method of strength for its practical application.Through strength analysis, the maximum equivalent stress of main parts of damper under static load and the stress time curve under dynamic load were obtained. By comparing the analytical results under static and dynamic load, it shows that all parts of the damper meet the strength requirements under the dynamic load, and that the maximum stress value of main parts under idle speed conditions is higher than that of running conditions, which is consistent with the actual working condition; while under the static load, the rivets did not meet the strength requirement. In conclusion, two feasible methods were proposed to improve the strength of rivets. It is verified that this damper can meet working strength requirements at last.
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