Project Details
Projekt
Development of a shaft-hub-connection with a hub made of metal/ceramic-composite that meets defined requirements
Subject Area
Engineering Design, Machine Elements, Product Development
Materials in Sintering Processes and Generative Manufacturing Processes
Materials in Sintering Processes and Generative Manufacturing Processes
Term
from 2018 to 2021
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 397981067
As the expectations towards products in the engineering area rise, the requirements concerning the involved materials consequently increase as well. Therefore, besides the advancement of different kinds of steel, new material classes are considered. During the last years, great progress has been achieved especially in the area of metal/ceramic-composites. They combine the huge advantages of metals and ceramics. Compared to steel they are much harder and more wear-resistant, yet not as brittle as pure ceramics but to some extent ductile. Furthermore, they are relatively well machinable compared to ceramic materials. Their density (and with that inertia!) is usually lower than the density of steel. Because of their advantages, future applications are imaginable in areas of rotating parts such as turbo chargers and turbine impellers, of abrasive stressed parts or wear protecting elements. For a broad field of application, information about possible connections to existing steel structures is needed. This research has not been done yet. With knowledge of the exact mode of failure and specific design rules the use of metal/ceramic-composites in efficient, economic and failsafe shaft-hub-connections is possible. Accordingly, within the framework of this project the failure behaviour is considered from the theoretical-simulative perspective. The generation of simulation models of composites which describe the material properly allows the modelling of the complete shaft-hub-connection and thus the exploration of the permissible load. Experimental validations in every stage support the simulations. Parallel to the material testing, for the design-experimental dimensioning an interference fit will be modified for the composite. By adding positive locking elements and hence combining positive locked and friction locked force transmission, the interference fit is going to be improved to rise the transferable moment of the connection.
DFG Programme
Research Grants
