Abstract
This paper presents a method to predict dry sliding wear. It is developed for the wear simulation on a tilted shaft-bushing bearing of an automotive turbocharger wastegate system. Therefore the simulation of complex dynamic behavior with its respective contact situations is required and is performed by nonlinear, transient, three-dimensional finite element analysis (FEA). Simultaneous wear calculation on all contact surfaces is possible considering individual wear coefficients. In order to reduce computing time, the resulting ablation depth is extrapolated. Subsequently the mesh is adjusted by implementing nodal displacements. The progress of the calculated wear volume matches well with theoretical considerations for different mesh qualities. Mesh refinement only leads to a higher resolution of the results but good convergence is achieved.
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