Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Hružík Lumír"'
Publikováno v:
EPJ Web of Conferences, Vol 269, p 01047 (2022)
The article is focused on the mathematical simulation of temperature influence on the shear stress during the mineral oil flow. The rotary rheometer is used to measure the shear stress. It works on the principle of torque measurement when the spindle
Externí odkaz:
https://doaj.org/article/9f17083b1fe74ee8804d5e9ea70d9c56
Publikováno v:
MATEC Web of Conferences, Vol 369, p 02011 (2022)
This paper deals with the experimental analysis of the effect of the braid angle on the behaviour of a hydraulic hose under pressure loading. The main structural elements of the hose are a rubber tube and a steel braid or spiral. The material of the
Externí odkaz:
https://doaj.org/article/74829626d0394a46b3a01ac99d00a3a9
Publikováno v:
MATEC Web of Conferences, Vol 369, p 02007 (2022)
This article deals with the experimental and numerical analysis of the leakage characteristics of the proportional directional valve. These characteristics describe the flow through the directional valve in the region of the center position of the sp
Externí odkaz:
https://doaj.org/article/563eea760f7f4c9995e2cc63ad56722d
Publikováno v:
MATEC Web of Conferences, Vol 369, p 02008 (2022)
The multiphase flow in oil hydraulic systems has a very significant effect on the correct operation of the hydraulic system. Air can be found in various states in hydraulic systems, while free entrained air in the form of bubbles has the potential to
Externí odkaz:
https://doaj.org/article/e9b6d7743bf249f49118d779715c94bc
Publikováno v:
Journal of Mechanical Engineering, Vol 67, Iss 1, Pp 119-124 (2017)
The article deals with the measurement of static characteristics of a pressure control valve. The pressure, at which the valve starts to leak oil, is adjusted by a spring. The measurement is performed on a hydraulic system that consists of tank, hydr
Externí odkaz:
https://doaj.org/article/84841b3b25404345ac090aefcebead88
Publikováno v:
EPJ Web of Conferences, Vol 213, p 02069 (2019)
The article is focused on mathematical simulation of the temperature influence on the pressure drop at the pump suction line. It is evaluated pressure drop depending on mineral oil flow rate. The courses of individual dependencies are determined by m
Externí odkaz:
https://doaj.org/article/e008025c3e3247a591f0cdea875479b1
Publikováno v:
EPJ Web of Conferences, Vol 213, p 02052 (2019)
This article deals with experimental measurement and numerical simulation of static and dynamic characteristics of the proportional directional valve. The characteristics of the proportional directional valve are measured on experimental equipment. A
Externí odkaz:
https://doaj.org/article/91cade8fba4e4478b2a560ac88b03cff
Publikováno v:
EPJ Web of Conferences, Vol 114, p 02008 (2016)
Dynamics of a hydraulic system is influenced by several parameters, in this case mainly by proportional control valve, oil bulk modulus, oil viscosity, mass load etc. This paper will be focused on experimental measurement and mathematical simulation
Externí odkaz:
https://doaj.org/article/6e132a0f02d8491b8b7b7b04e0e63461
Publikováno v:
EPJ Web of Conferences, Vol 114, p 02131 (2016)
Eigenfrequency of hydraulic systems belongs to important dynamic quantities. If the excitation frequency of a given hydraulic system is equal to the system eigenfrequency, high-amplitude pressure and flow pulsations can arise. It has a negative influ
Externí odkaz:
https://doaj.org/article/d90f4321db6c4e8caaa722aebf25053b