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Twin-Shaft Mixers’ Mechanical Behavior Numerical Simulations of the Mix and Phases

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Department of Engineering, University of Perugia, Via G. Duranti, 1, 06125 Perugia, Italy
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Department of Production, Officine Meccaniche Galletti O.M.G. Srl, 06135 Perugia, Italy
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Author to whom correspondence should be addressed.
Machines 2019, 7(2), 39; https://doi.org/10.3390/machines7020039
Received: 27 March 2019 / Revised: 3 June 2019 / Accepted: 5 June 2019 / Published: 7 June 2019
In this paper, the mechanical behavior of concrete twin-shaft mixers is analyzed in terms of power consumption and exchanged forces between the mixture and the mixing organs during the mixing cycle. The mixing cycle is divided into two macro phases, named transient and regime phase, where the behavior of the mixture is modeled in two different ways. A force estimation and power consumption prediction model are presented for both the studied phases and they are validated by experimental campaigns. From the application of this model to different machines and by varying different design parameters, the optimization of the power consumption of the concrete twin-shaft mixers is analyzed. Results of this work can be used to increase productivity and profitability of concrete mixers and reduce energy waste in the industries which involve mixing processes. View Full-Text
Keywords: Twin-shaft mixer; mechanical optimization; mechanical design; power evaluation Twin-shaft mixer; mechanical optimization; mechanical design; power evaluation
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MDPI and ACS Style

Valigi, M.C.; Logozzo, S.; Landi, L.; Braccesi, C.; Galletti, L. Twin-Shaft Mixers’ Mechanical Behavior Numerical Simulations of the Mix and Phases. Machines 2019, 7, 39.

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