Virtual Design and Analysis of the Balancing Element of an External Gear Machine Considering Cavitation and Mixed Lubrication Effects

Authors

  • Thomas Ransegnola Maha Fluid Power Research Center, Purdue University, West Lafayette, IN USA
  • Andrea Vacca Maha Fluid Power Research Center, Purdue University, West Lafayette, IN USA

DOI:

https://doi.org/10.13052/ijfp1439-9776.2414

Keywords:

External gear machines, lubricating interface design, cavitation, mixed lubrication

Abstract

This paper presents a simulation based approach for sizing the axial balance elements of a pressure compensated external gear machine. The reference hydraulic unit must be able to guarantee operation in two quadrants, as either a pump or a motor. It also needs to operate in a wide operating range of speed and pressure, as it is to be used as primary hydraulic unit for an electro-hydraulic actuator (EHA). The design procedure builds upon past work at the author’s center, but it extends it to the case of multiple quadrant units. Also, a unique method for modeling of both mixed lubrication and cavitation that might occur in the lubricating film is used. After describing the design procedure, the paper discusses the features of the balancing of a reference unit, along with the effects of both cavitation and mixed lubrication.

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Author Biographies

Thomas Ransegnola, Maha Fluid Power Research Center, Purdue University, West Lafayette, IN USA

Thomas Ransegnola completed his PhD in 2020 at the Maha Fluid Research Center at Purdue University. His thesis focused on the development of a strongly coupled model of positive displacement machines. He has several journals and conferences publications related to the development and application of this model. He currently works at Sandia National Laboratories, developing multi-physics and linear algebra software. His research focuses on the use of next-generation computing platforms to facilitate simulation of increasingly complex multi-physical phenomenon.

Andrea Vacca, Maha Fluid Power Research Center, Purdue University, West Lafayette, IN USA

Andrea Vacca earned his Ph.D. from the University of Florence (Italy) in 2005. Before joining Purdue University in 2010, Dr. Vacca was Assistant Professor of Fluid Machinery at the University of Parma (Italy). Fluid power technology has been Dr. Vacca’s major research interest since 2002. Goals of his research are the improvement of energy efficiency, durability, controllability, and noise emissions of fluid power technology. To accomplish these goals, his research team has developed original numerical and experimental techniques for hydraulic systems and components. Prof. Vacca’s interests also include the electrification of hydraulic control systems, and the modeling of the properties of hydraulic fluids, with focus to the effects of aeration and cavitation, as well as the use of low viscous fluids (such as water) in fluid power systems.

Dr. Vacca is the author of more than 200 papers, most of them published in international journals or conferences. He is also active in the fluid power research community. He is chair of Fluid Power Systems and Technology Division (FPST) of ASME, and a former chair of the SAE Fluid Power division. Dr. Vacca is also Treasurer and Secretary of the Board of the Global Fluid Power Society (GFPS). Furthermore, he is also Editor in Chief of the International Journal of Fluid Power and he is in the Editorial Board of Actuators, the Journal of Dynamics and Vibroacoustics and the Journal of Hydromechatronic.

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Published

2023-01-17

How to Cite

Ransegnola, T. ., & Vacca, A. . (2023). Virtual Design and Analysis of the Balancing Element of an External Gear Machine Considering Cavitation and Mixed Lubrication Effects. International Journal of Fluid Power, 24(01), 77–98. https://doi.org/10.13052/ijfp1439-9776.2414

Issue

2023: Vol 24 Iss 1

Section

GFPS 2020

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