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Block Valve

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Monika Ivantysynova – One of the best experts on this subject based on the ideXlab platform.

  • Virtual Prototyping of Axial Piston Machines: Numerical Method and Experimental Validation
    Energies, 2019
    Co-Authors: Rene Chacon, Monika Ivantysynova

    Abstract:

    This article presents a novel methodology to design swash plate type axial piston machines based on computationally based approach. The methodology focuses on the design of the main lubricating interfaces present in a swash plate type unit: the cylinder Block/Valve plate, the piston/cylinder, and the slipper/swash plate interface. These interfaces determine the behavior of the machine in term of energy efficiency and durability. The proposed method couples for the first time the numerical models developed at the authors’ research center for each separated tribological interface in a single optimization framework. The paper details the optimization procedure, the geometry, and material considered for each part. A physical prototype was also built and tested from the optimal results found from the numerical model. Tests were performed at the authors’ lab, confirming the validity of the proposed method.

  • An Investigation of Design Parameters Influencing the Fluid Film Behavior in Scaled Cylinder Block/Valve Plate Interface
    9th FPNI Ph.D. Symposium on Fluid Power, 2016
    Co-Authors: L. Shang, Monika Ivantysynova

    Abstract:

    The efficiency of an axial piston pump or motor is dominated by the volumetric and torque losses of the three main lubricating interfaces (piston/cylinder, cylinder Block/Valve plate, and slipper/swash plate). The research study in this paper only focuses on the cylinder Block/Valve plate interface. The goal of this research is to investigate a novel approach for scaling the cylinder Block/Valve plate interface to have the same percentage of volumetric and torque losses of the baseline interface. To achieve this research goal, many design parameters influencing the performance of the interface are investigated. An in-house developed fluid structure and thermal interaction model was used to analyze the cylinder Block/Valve plate interface including the resulting parts temperature, the parts elastic deformation due to pressure and thermal load, the fluid film properties and resulting energy dissipation, friction torque, and leakage of cylinder Block/Valve plate interfaces. This model is utilized to simulate the cylinder Block/Valve plate interface performance of different sizes of the displacement units. In this paper, the displacement volume of the biggest unit is sixty-four times larger than the smallest unit. The computational study reveals the design parameters influencing the elastic deformations of the solid parts and the energy dissipation and stability of the fluid film in cylinder Block/Valve plate interface of different sizes. Based on these investigations, a novel scaling approach to scale the cylinder Block/Valve plate interface is discussed.

  • Advanced Virtual Prototyping of Axial Piston Machines
    9th FPNI Ph.D. Symposium on Fluid Power, 2016
    Co-Authors: Rene Chacon, Monika Ivantysynova

    Abstract:

    This paper explains how a combination of advanced multidomain numerical models can be employed to design an axial piston machine of swash plate type within a virtual prototyping environment. Examples for the design and optimization of the cylinder Block/Valve plate interface are presented.Copyright © 2016 by ASME

Rene Chacon – One of the best experts on this subject based on the ideXlab platform.

  • Virtual Prototyping of Axial Piston Machines: Numerical Method and Experimental Validation
    Energies, 2019
    Co-Authors: Rene Chacon, Monika Ivantysynova

    Abstract:

    This article presents a novel methodology to design swash plate type axial piston machines based on computationally based approach. The methodology focuses on the design of the main lubricating interfaces present in a swash plate type unit: the cylinder Block/Valve plate, the piston/cylinder, and the slipper/swash plate interface. These interfaces determine the behavior of the machine in term of energy efficiency and durability. The proposed method couples for the first time the numerical models developed at the authors’ research center for each separated tribological interface in a single optimization framework. The paper details the optimization procedure, the geometry, and material considered for each part. A physical prototype was also built and tested from the optimal results found from the numerical model. Tests were performed at the authors’ lab, confirming the validity of the proposed method.

  • Advanced Virtual Prototyping of Axial Piston Machines
    9th FPNI Ph.D. Symposium on Fluid Power, 2016
    Co-Authors: Rene Chacon, Monika Ivantysynova

    Abstract:

    This paper explains how a combination of advanced multidomain numerical models can be employed to design an axial piston machine of swash plate type within a virtual prototyping environment. Examples for the design and optimization of the cylinder Block/Valve plate interface are presented.Copyright © 2016 by ASME

  • An Investigation of the Impact of the Elastic Deformation of the End case/Housing on Axial Piston Machines Cylinder Block/Valve Plate Lubricating Interface
    , 2016
    Co-Authors: Rene Chacon, Monika Ivantysynova

    Abstract:

    The cylinder Block/Valve plate interface is a critical design element of axial piston machines. In the past, extensive work has been done at Maha Fluid Power Research center to model this interface were a novel fluid structure thermal interaction model was developed which accounts for thermal and elasto-hydrodynamic effects and has been proven to give an accurate prediction of the fluid film thickness. This paper presents an in-depth investigation of the impact of the elastic deformation due to pressure and thermal loadings of the end case/housing on the performance of the cylinder Block/Valve plate interface. This research seeks to understand in a systematic manner the sensitivity of the cylinder Block/Valve plate interface to the structural design and material properties. A comparison between simulations results is done by utilizing different end case designs and material compositions, both in the Valveplate and end case solids.

R. Shateri – One of the best experts on this subject based on the ideXlab platform.

  • Numerical and experimental study of open die forging process design for producing heavy Valves
    International Journal on Interactive Design and Manufacturing (IJIDeM), 2018
    Co-Authors: A Abedian, Behrooz Shirani Bidabadi, R. Shateri

    Abstract:

    In this study, the finite element method was used to produce a Y-Block Valve with a weight of 2042 kg. To compare the new process with the traditional production process for this workpiece, both were simulated using finite element ABAQUS software. The viscoplastic properties of material were measured using a thermomechanical simulator (plasto-dilatometer),and then the two models were simulated in three dimensions, incorporating a fully coupled thermal stress analysis. The material flow, stress, strain and temperature distributions, dimensions of the original workpiece, and force required were compared via simulations. The new process was found to not only reduce the machining required but also increase the strength of the workpiece, reduce the force needed for forging, and allow the use of a smaller initial ingot. Finally, the new model was tested experimentally and a good match was found between the experimental and simulation results. The new introduced finite element model has potential applications in real production.