Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : February 28, 2017 - March 03, 2017
The gear rolling densification of Powder Metal (PM) gears leads to better mechanical properties due to the selectively closed porosity of some hundreds of a micrometer under the surface of the tooth. The optimization of this process is critical in order to reduce the time to market result and the quality of the rolled gear. One way to optimize the process, tool design and gear stock is to conduct Finite Element (FE) simulations with a plasticity material model for porous metals. In this paper, finite element simulations are being performed for the gear rolling densification process. The aim is to investigate how such simulations can be used to improve the quality of the rolling process. Moreover, to identify how more advanced plasticity material models such as the anisotropic model of Ponte-Castaneda Kailasam and coworkers can help increase the accuracy of the calculations compared to more commonly used models such as the one suggested by Gurson-Tvergaard-Needleman (GTN). Furthermore the simulations are also correlated with experimental results to validate the accuracy of the simulations.
