Numerical Model of an External Gear Pump and Its Validation

Cieślicki, Rafał; Karliński, J.; Osiński, Piotr

doi:10.1007/978-3-030-04975-1_12

Cited by 2 publications

(4 citation statements)

References 6 publications

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“…In this article the authors present the use of FEM, which is frequently used in numerical strength calculations (Cieślicki et al , 2019Ghionea et al 2012;Kollek et al 2017;Osiński, Warzyńska 2022), as a method to find the height of the circumferential gap in an external gear pump with consideration the deformation of pump elements. The aim of the work is to show that the deformation of pump elements significantly affects the size of the circumferential gap.…”

Section: Influence Of Circumferential Gap Size On Volumetric Efficiencymentioning

confidence: 99%

“…The model here presented is a successive stage of research on numerical modelling of gear pumps. The model has been significantly modified with respect to the version presented previously (Cieślicki et al , 2019. The modifications are described below.…”

Section: Influence Of Circumferential Gap Size On Volumetric Efficiencymentioning

confidence: 99%

“…Figure 12 shows the measured deformations (Cieślicki et al 2019) and the results of the FEM calculations. Letters X and Z indicate directions in accordance with the applied coordinate system.…”

Section: Validation Of the Modelmentioning

confidence: 99%

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An Investigation of the Impact of Pump Deformations on Circumferential Gap Height as a Factor Influencing Volumetric Efficiency of External Gear Pumps

Cieślicki

Karpenko

2022

Transport

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Gear pumps are widely used in transport machines not only in hydraulic drive systems, but also in lubrication and fuel systems. A positive displacement pump converts mechanical energy into pressure energy stored in the liquid, which it transports to the hydraulic cylinder or motor. The efficiency of this process depends on the efficiency of the system components, including the efficiency of the pump, which depends on the amount of internal leakage through the gaps between the high and low pressure sides. The larger the gaps, the lower the volumetric efficiency. This article presents an investigations of impact of pump deformations on circumferential gap height. The article presents a three-dimensional model of an external gear pump using Finite Element Method (FEM) during operating conditions. The model reflects pumping operation at discharge pressures up to 32 MPa and it was validated against strain measurements of pump casing. The simulation results indicate that the pump casing becomes deformed due to pressure, causing a significant increase in the height of the circumferential gap. The increase of the discharge pressure from 8 to 32 MPa causes more than twofold local increase in the height of the circumferential gap. The obtained results indicate that for the correct modelling of the flow generated by gear pumps, it is necessary to consider the change in the size of the gaps resulting from the deformation of the pump.

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Section: Influence Of Circumferential Gap Size On Volumetric Efficiencymentioning

confidence: 99%

Section: Influence Of Circumferential Gap Size On Volumetric Efficiencymentioning

confidence: 99%

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An Investigation of the Impact of Pump Deformations on Circumferential Gap Height as a Factor Influencing Volumetric Efficiency of External Gear Pumps

Cieślicki

Karpenko

2022

Transport

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“…The key design stage in the determination of the optimal dimensions of the casing is the calculation of static strength [24]. This calculation is limited to the use of empirical dependencies and is labor-intensive [25].…”

Section: Introductionmentioning

confidence: 99%

Parametric Optimization of a New Gear Pump Casing Based on Weight Using a Finite Element Method

Zharkevich,

Nikonova,

Gierz

et al. 2023

Applied Sciences

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Reducing the weight of the structures and choosing the materials used in mechanical engineering is an important and pressing economic and environmental problem. The design of a gear pump is developed from the point of view of the geometry of the gears, as well as the casing. This paper tested a gear pump casing using the environment of the ABAQUS 2020 system in the field of statistical strength analysis using the finite element method. The tests were carried out on the pump body and the front and rear covers, which were made of three types of materials (cast iron, aluminum, and polycarbonate), at a pressure of 28 MPa. After loading, the maximum stresses in the aluminum casing (177 MPa), the cast iron casing (157 MPa), and the polycarbonate (200 MPa) were determined. The largest stress concentrators are the grooves at the bottom of the pump casing. Rounding the internal chamber of the casing with a radius of 4 mm made it possible to reduce stress in this zone by 10 MPa. The parametric optimization of the front and back covers of the gear pump made it possible to reduce the total weight of the aluminum structure by 14%, the cast iron by 12%, and the polycarbonate by 16%. The 3D models show areas of minimal stress where the size and weight of the structure could be reduced in the future using a comprehensive approach involving parametric and topological analysis.

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Numerical Model of an External Gear Pump and Its Validation

Cited by 2 publications

References 6 publications

An Investigation of the Impact of Pump Deformations on Circumferential Gap Height as a Factor Influencing Volumetric Efficiency of External Gear Pumps

An Investigation of the Impact of Pump Deformations on Circumferential Gap Height as a Factor Influencing Volumetric Efficiency of External Gear Pumps

Parametric Optimization of a New Gear Pump Casing Based on Weight Using a Finite Element Method

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