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A parametric CAD-based method for modelling and simulation of positive displacement machines

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Abstract

We present an efficient and user-friendly parametric CAD-based design method for the graphical description of positive displacement machines, exploiting commercial parametric CAD software and a tailored interface. An executable module simulates the motion of the machine components, analyzes the machine geometry, and automatically extrapolates the geometrical data from the 3D CAD model, generating data files that can be directly used for following fluid dynamic analyses. The graphical approach supports investigation of the machine performance and exploring optimized design variants. The method has been applied to three industrial test cases: An external gear pump, an axial piston pump, and a gerotor pump. A complete case study focused on the external gear pump is proposed, as well as the results from the other two types are summarized. We validate the CAD-based method by comparing the obtained data with the data coming from the application of state-of-the-art analytical methods.

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Authors and Affiliations

  1. Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, via Vivarelli 10, 41125, Modena, Italy

    Francesco Gherardini, Barbara Zardin & Francesco Leali

Authors
  1. Francesco Gherardini
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  2. Barbara Zardin
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  3. Francesco Leali
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Corresponding author

Correspondence to Francesco Gherardini.

Additional information

Recommended by Associate Editor Ki-Hoon Shin

Francesco Gherardini graduated in Mechanical Engineering from the University of Modena and Reggio Emilia, where he also earned his Ph.D. in Mechanical Simulation and Design Methods. He is currently a Research Fellow in Design Methods for Industrial Engineering at the “Enzo Ferrari” Department of Engineering of the University of Modena and Reggio Emilia. His research interests include the development of methods and tools for supporting product design, the use of graphical methods and CAD-based applications for solving engineering problems, the digital reconstruction of 3D geometry, the parametric and free form modelling, and the dimensional control.

Barbara Zardin graduated from Modena and Reggio Emilia University in Mechanical Engineering in 2003, and a Ph.D. in 2008 at University of Bologna. Her research topics are on fluid power systems and components (positive displacement machines and proportional directional valves) for mobile and industrial applications, with particular attention devoted to energy dissipations reduction.

Francesco Leali is an Associate Professor at the “Enzo Ferrari” Department of Engineering at the University of Modena and Reggio Emilia. In 2002 he graduated in Mechanical Engineering and in 2008 he received his Ph.D., both at the University of Modena and Reggio Emilia. He has expertise in integrated design and simulation for the development of new products and processes; in designing flexible robotic systems through the use of behavioral simulation and offline programming tools, and through the development and application of methods and techniques of computer vision and adaptive compensation of mechanical systems.

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Gherardini, F., Zardin, B. & Leali, F. A parametric CAD-based method for modelling and simulation of positive displacement machines. J Mech Sci Technol 30, 3253–3263 (2016). https://doi.org/10.1007/s12206-016-0634-3

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  • DOI: https://doi.org/10.1007/s12206-016-0634-3

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