31. Flexible Dynamic Modeling of Turret Systems by Means of Craig-Bampton Method and Experimental Validation

Today’s mechanical systems are designed and manufactured with increasing functionality due to the increase in the design requirements. This leads to use of higher numbers of degrees of freedom, causing system modeling process become more complicated, including structural and dynamic aspects. The sources of complexity arise mainly from the connection mechanisms like gears, bearings and gear boxes and dynamic behavior of the structural parts in motion. Usually, each of these subsystems is analyzed individually by analytical and/or numerical methods. However, the whole system performance should be modeled and analyzed in the assembly configuration in order to observe the interaction of subsystems. Furthermore, critical structural parts should be modeled flexible and connection mechanisms’ dynamic properties need to be identified accurately. Modeling parts elastically also result in additional degrees of freedom which makes the model difficult to solve for kinematic analysis. Therefore, Craig-Bampton reduction method is used to reduce the size of elastically modeled parts. In this study, dynamic modeling process and analysis results of a turret will be presented. Furthermore, comparisons between the analysis results and the assembled prototype turret tests are presented.