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Investigation and New Approach to Determine Initial Depth of Circumferential Groove to Simulate Turbine Wheel Burst


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DOI: https://doi.org/10.15866/ireme.v12i1.13620

Abstract


For performing containment tests in turbochargers, a groove is cut in the back-face of the wheel to weaken it so that the wheel is busted in one revolution. The determination of the exact depth of cut using explicit finite element analysis (FEA) requires a large number of iterations and hence requires a large runtime. The overall turnaround time is also high. This paper presents various concepts generated to determine the initial depth of cut that would reduce the number of iterations required to obtain the exact depth of cut. If the time required for obtaining the initial depth and the number of iterations to obtain exact depth is low, then the overall turnaround time is reduced. These concepts are rated against various criteria in Cause and Effect matrix and the best concept is selected. The static structural-radial deformation method is observed to give a consistent deformation value for all the wheels under study. This method is compared to the theoretical method and good correlations were observed.
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Keywords


Containment Test; Explicit Dynamics; Groove Dimensions; Static Structural; Radial Deformation

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