Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4134
Title: An iterative numerical method for determination of temperature-dependent friction coefficients in thermomechanical model analysis of cold bolt forging
Authors: İnce, Umut
Güden, Mustafa
Keywords: Friction
Cold forging
Bolt
Numerical simulation
Fastener
Issue Date: 20-Feb-2013
Publisher: Springer Verlag
Source: Güden, M., & İnce, U. (2013). An iterative numerical method for determination of temperature-dependent friction coefficients in thermomechanical model analysis of cold bolt forging. The International Journal of Advanced Manufacturing Technology, 68(9-12), 2133-2144. doi: 10.1007/s00170-013-4831-2
Abstract: A set of temperature-dependent friction coefficients was developed to increase the accuracy of finite element (FE) simulations of cold bolt forging. The initially attained friction coefficients at different temperatures were calibrated with the iterations between the experimental and thermomechanical model extrusion test loads. The constant friction coefficient and the determined set of friction coefficients as function of temperature were then implemented to the simulations of the cold bolt-forging processes. Further calibrations and model validations were made based on the temperature measurements of the workpiece in the actual bolt-forging processes. To show the advantages of developed temperature-dependent friction coefficients, the loads of four different bolt-forging processes were compared with the thermomechanical model loads calculated using the constant friction and temperature-dependent friction coefficients. The modeling results indicated that the use of temperature-dependent friction coefficients in the FE simulations resulted in nearer temperature distributions and the loads of the workpiece during forging as compared with the use of a constant friction coefficient.
URI: http://dx.doi.org/10.1007/s00170-013-4831-2
http://hdl.handle.net/11147/4134
ISSN: 0268-3768
0268-3768
Appears in Collections:Mechanical Engineering / Makina Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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