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The pressure of hydraulic damper - the unsteady flow characteristics

The simulation and experimental study. This paper because of space constraints, only given in Figure 6 and Figure 7 shows two sets of simulation and experimental curves. Among them, Figure 6 shows the transient response of thin bladed dampers in flow, calculated from the pressure flow simulation results and experimental results, Figure 7 for the round damper long tube under pulsating flow (pulse frequency of approximately 180Hz), from the pressure deviation of flow simulation results and experimental results. Xuan groups in the curve, as a signal transformation in the measured input signal for the differential pressure signal across the damper, they are shown in Figure 6 (a), loop 7 (a) below. Figure 6 (b), Figure 7 (b) said flow signal, where solid line represents the unsteady flow measurement using experimental device measured by the flow signal, dashed line indicates the dynamic model based on damper calculated from the pressure of traffic signals. In addition,[link widoczny dla zalogowanych], Figure 7 (c) also shows the dynamic pressure loss when the item is not considered when calculating the results. Figure 5 is the frequency characteristics of the damper test boat traffic signal 6,[link widoczny dla zalogowanych], a pressure change (thin bladed damper) in the upper side of the child, the simulation results and experimental results are very kiss Taiwan, therefore, the front has been established damper test dynamic mathematical model is correct Also, the ring 7 (c) shows that, when the high frequency pulsating flow of fluid inertia does not take into account the impact of simulation will bring big error. Machine Tool and Hydraulics 8, 1992 to move 5 Conclusion The significance of the three with the representatives of the hydraulic damper was studied by the pressure of their unsteady flow characteristics of a mathematical model. Time-domain simulation and experimental results show that the available mathematical model is correct, which can be drawn, the paper the pressure in the hydraulic damper unsteady flow characteristics of a theoretical analysis of the assumptions made are reasonable, used in this article experimental methods and research methods are effective. This article from the hydraulic damper dynamic model of hydraulic components and systems for improving the dynamic simulation accuracy has important reference value. However,[link widoczny dla zalogowanych], the actual hydraulic components and systems, the damper size is vastly different, the flow is not the same, therefore, the dynamic pressure loss correction coefficient of D will vary with the above factors, the actual situation requires us to create reference to the results of this study selected the appropriate D values on the other hand, in order to draw conclusions of more general and regularity, the need for the dynamic characteristics of hydraulic damper for more systematic and thorough tCs) Gui Ying 7, a pressure harness the amount of signal change (round damper m long tube) study. Because of this, significance of this research is that it is carried out in depth for the future system of hydraulic damper unsteady characteristics of study provides an effective experimental methods and research methods. References 1 Fonte positive. Dynamic Analysis of pipe and its tolerance of unsteady flow in the application. [Ph.D. Thesis: Harbin: [Industry University, October 1990. 2 Wang Tanaka wild. Pressure and Flow cylindrical cutter 0 Frequency characteristics. Air pressure hydraulic eup, 1982,18 (8): 199 ~ 2058 Miyagawa. Cylindrical cutter U0 Frequency characteristics. Japan Society of Mechanical Engineers (Part 2), 1976,42 (855) 811 ~ 8 jingling 4FunkJE. WOO: IsDJ, ChaoSP. TheTransientResponseofOrificesandVeryShortLines. JournalofBasicEngineering. Trans. AE,[link widoczny dla zalogowanych], 1972j488 ~ 4915LanghaarHL. JournalofAppliedMechanics, 1942,9: A a 55. 6JohcnsanFC. FlowThroughPipeOfificeatLowReygoldsNumber. Proc. Roy. 50 ~, V12e, No. 861.7 ZHAO Tong, Peng light is, Xu Yao aluminum. Unsteady hydraulic flow line 0 total resistance to pick up given method. [Japanese] 0 of machinery, 1991, the ship (2) l278 ~ 279QT a 0l coating machine gun pneumatic About Guangzhou Machine Tool Research Institute at the Zhong Junjie, by the machinery and electronics industry science and technology department chair, completed development of the Guangzhou Machine Tool Research Institute Pneumatic gun for a 01 QT coating machine (also known as pneumatic caulking gun),[link widoczny dla zalogowanych], was in March 1990 adopted by the experts. The deputies believe that coating benefits are obvious, highlighting the advantages, mainly: (1) can improve the coating efficiency and quality (2) reduction of rubber waste} (8) labor intensity and improve the working environment; (4) the required research of the technical indicators, (1.46 million under the special section) T ... n1 flooded pneumatic gun cloth Introduction - 3 minutes 1 Wei Jie silly

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