Mathematical modelling of the hydromechanical drive of the test bench for plunger hydraulic cylinders with energy recovery

Rybak, Alexander; Meskhi, Besarion; Pelipenko, Alexey; Rudoy, Dmitry; Olshevskaya, Anastasiya; Serdyukova, Yuliya; Odabashyan, Mary; Alentsov, Egor

doi:10.1051/e3sconf/202341302047

Cited by 6 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Let's consider a special case when synchronized hydraulic branches are loaded the same way. That is, the load values are the same, the flow rates of the working fluid passing through the input resistances (3,5) are also equivalent, and therefore the values of pressure losses in the system will be equal. In this case, the control chambers (2, 6) are subjected to pressures different from the auxiliary chambers (1,7) for the same difference.…”

Section: Materials and Research Methodsmentioning

confidence: 99%

“…The complication of technological processes with increasing requirements for the accuracy of execution of executive movements, their consistency poses additional challenges to the developers of hydraulic drives [1][2][3][4][5]. Synchronization of the movements of the output links in an extensive multi-circuit hydromechanical system is complicated by both variable external loading and elastic properties of the hydraulic system itself.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Simulation of a synchronous hydrodynamic system based on a throttle flow divider of a non-valve type

Rybak,

Meskhi,

Pelipenko

et al. 2024

BIO Web Conf.

Self Cite

View full text Add to dashboard Cite

Hydraulic drives, which for the most part is multi-circuit and branched, are widely used in hydraulic drives of modern mobile equipment and technological equipment. To synchronize the operation of mechanisms driven by a single power mechanism, throttle flow dividers are used. The article discusses various options for the functioning of the hydrodynamic system, as well as the device of the throttle flow divider. The dynamics of the synchronous hydraulic system based on throttle dividers is presented and the design scheme is described. The time integration of pressure values at various points, the values of movement and position of the moving element in space, the speed of movement in space and the values of velocities in real time and scale is carried out. The conclusion is made about the influence of system parameters on the selection of parameters of a suitable throttle flow divider.

show abstract

Section: Materials and Research Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation of a synchronous hydrodynamic system based on a throttle flow divider of a non-valve type

Rybak,

Meskhi,

Pelipenko

et al. 2024

BIO Web Conf.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, the research, design and calculation of regenerative drive systems for test benches of volumetric hydraulic machines are still relevant and important [12,13].…”

Section: Introductionmentioning

confidence: 99%

Improving the Efficiency of the Drive of the Test Bench of Rotary Hydraulic Machines

Rybak,

Meskhi,

Rudoy

et al. 2024

Actuators

Self Cite

View full text Add to dashboard Cite

Volumetric hydraulic drive systems are quite widespread in many industrial sectors. To determine the degree of reliability of hydraulic machines, it is necessary to conduct resource tests. The main requirement for such tests is the compliance of the load level with the operating mode of the hydraulic machine. Analysis of existing methods of creating such a load showed a significant drawback of bench tests—the lack of useful work. Therefore, a number of authors suggest the use of stands with a regenerative drive system. One peculiarity of the work of such stands is the possibility of returning part of the spent energy back to the test system. However, such systems are insufficiently studied and have significant drawbacks. The purpose of this work is to increase the efficiency of the regenerative drive system of the test bench of volumetric hydraulic machines of rotational action by improving the theory and methodology of its calculation and design. This article describes the principle of operation of the circuit of the regenerative drive of the test bench of rotary hydraulic machines. A model of the elastic-dissipative state of the sections of the elements of the hydro-mechanical drive system of the stand is also proposed, which allows for the calculation of the structural and energy parameters of the regenerative hydro-mechanical system. The main structural and functional parameters affecting the operational performance of the system as a whole are also identified. A “test efficiency coefficient” is proposed, which allows for evaluation of the energy efficiency of the test process.

show abstract

“…For a long time, scientists from all over the world, including Russian ones, have been looking for ways to solve this problem. As a result of these searches, a test method with energy recovery of hydraulic machines (pumps and motors) of rotational motion was proposed [1][2][3]. The proposed method has shown its effectiveness, and therefore stands have been developed on its basis for conducting tests with energy recovery and hydraulic reciprocating machines (hydraulic cylinders) [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Simulation of the testing process of reciprocating hydraulic cylinders with energy recovery

Rybak,

Meskhi,

Rudoy

et al. 2023

E3S Web Conf.

Self Cite

View full text Add to dashboard Cite

One of the most important problems of modern mechanical engineering is the energy efficiency of technological equipment and manufactured products. A separate issue in this series is the technology and means of testing finished product samples, including hydraulic cylinders, which can be carried out with passive or active energy recovery. The purpose of the work is to develop a test bench for piston hydraulic cylinders that provides recovery of part of the energy during the test, and at the same time the tests would take place in a mode as close as possible to the real conditions of their operation during their tests, as well as solving the problem of its modeling and calculation of the main functional parameters. In this article, a design scheme of a test bench for reciprocating hydraulic cylinders with active energy recovery and a method for mathematical modeling of the process of its functioning based on the application of the "theory of volumetric rigidity of hydraulic systems" is proposed, which makes it possible to describe with a high degree of accuracy and reliability the processes occurring in the test system during its operation. A scheme of a test bench for piston hydraulic cylinders with energy recovery is proposed. A mathematical model of the stand has been developed and an example of a preliminary calculation of its functioning is given. The proposed modeling method simplifies the modeling process and allows the use of numerical integration methods in calculations. The resulting mathematical model makes it possible to obtain rational parameters of the stand already at the design stage, without resorting to the need for expensive and labor-intensive field studies.

show abstract

Mathematical modelling of the hydromechanical drive of the test bench for plunger hydraulic cylinders with energy recovery

Cited by 6 publications

References 15 publications

Simulation of a synchronous hydrodynamic system based on a throttle flow divider of a non-valve type

Simulation of a synchronous hydrodynamic system based on a throttle flow divider of a non-valve type

Improving the Efficiency of the Drive of the Test Bench of Rotary Hydraulic Machines

Simulation of the testing process of reciprocating hydraulic cylinders with energy recovery

Contact Info

Product

Resources

About