Abstract
Based on the analysis of crankshaft fillet rolling process, used ANSYS finite element analysis software to conduct the elastic-plastic mechanical simulation of crankshaft rolling process, and gained the variation law of the residual stress and plastic deformation in the radial path of the fillet under different rolling laps and rolling pressure. Established the relationship between the rolling pressure and the plastic deformation and residual stress of the fillet, and provided theoretical support for the evaluation and detection of the crankshaft rolling quality.
Highlights
The maximum load and fatigue strength that crankshaft can bear directly determine the quality and life of the engine, the requirement for the quality of the crankshaft is higher and higher
The variation of the residual stress and plastic deformation of the fillet after crankshaft rolling is analyzed by changing rolling laps and rolling pressure
It can be seen from the diagram that the residual stress and plastic deformation of the crankshaft after rolling are concentrated on contact points of the fillet, and the closer the point is to the surface, the larger the value will be
Summary
The maximum load and fatigue strength that crankshaft can bear directly determine the quality and life of the engine, the requirement for the quality of the crankshaft is higher and higher. The distribution of the residual compressive stress generated by the crankshaft after rolling is the important evaluation of the rolling effect, but it is very difficult to determine the residual stress generated by the rolling reinforcement. The study on the changing law of residual stress and plastic deformation in the process of crankshaft fillet rolling is of great significance for further perfecting the theory of crankshaft rolling reinforcement and improving the quality of rolling processing[3,4]. The ANSYS / LS-DYNA is used to simulate and analyze the crankshaft rolling process, and to study the size and distribution of the radial residual stress and the plastic deformation of fillet at the neck of crankshaft connecting rod under different rolling pressure and rolling laps, which provides reference and theoretical support for the evaluation and detection of rolling quality of crankshaft fillet
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