Impact Characteristics Simulation Analysis of High Pressure Valve Based on Workbench/ls-Dyna

2019 ◽  
Author(s):  
Yingjian Deng ◽  
Yuzhe Yu
Keyword(s):  
High Pressure ◽  
Simulation Analysis ◽  
Impact Characteristics

Dynamic Characteristics Study on Hydraulic Impact of Cartridge Valve in High Pressure and Large Flow Depressurization Process

2012 ◽  
Vol 510 ◽  
pp. 350-355
Author(s):  
Kang Sun ◽  
Wen Chen ◽  
Jian Ping Tan
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Dynamic Characteristics ◽  
Simulation Analysis ◽  
Analysis Software ◽  
Hydraulic Oil ◽  
Hydraulic Impact ◽  
The Stability ◽  
Impact Characteristics ◽  
Large Flow

Dynamic analysis software ANSYS/LS-DYNA is applied to fluid-structure coupling simulation analysis of cartridge valve. Transient mechanical properties of cartridge valve and impact characteristics of interaction between hydraulic oil and valve spool in depressurization process were got. The result of study showed that the stability of depressurization process is related to the contacting time between valve spool and valve sleeve. The squeezing time of hydraulic oil is best not more than 0.01s. The peak impact time of hydraulic oil to valve spool in steady depressurization process is 140kN. And the maximum VonMises between valve spool and valve sleeve is 456MPa.

Numerical Simulation Analysis of Centrifugal Pump Floating Ring Seal

2011 ◽  
Vol 317-319 ◽  
pp. 2148-2151
Author(s):  
Jian Yong Han ◽  
Guo Jing Chen
Keyword(s):  
Numerical Simulation ◽  
High Pressure ◽  
Centrifugal Pump ◽  
Simulation Analysis ◽  
Maximum Pressure ◽  
Force Analysis ◽  
Sealing Ring ◽  
Fluent Software ◽  
Ring Seal ◽  
Liquid Flows

According to the studying on the force analysis of floating ring of centrifugal pump, the paper think that floating ring stress will change with the change of centrifugal pump’ s condition. Using fluent software, the floating ring seal was simulated and analyzed. Results show that the liquid force acted on the floating ring is nonuniform and asymmetrical as wedging effect, and that section maximum pressure is not lies in the smallest clearance place, but in the wedge area where liquid flows to the minimum clearance, because the effect of Leak resistance is better in high pressure than low pressure. The leakage decreases and liquid resistance increases with the increases of RPM. The leakage increases with the increases of differential pressure in sealing ring sides and eccentricity. Pressure distribution within the seal clearance is not uniform with the increases of eccentricity.

The Design and Simulation of Wide Range Pressure Sensor Based on HTCC for High-Temperature Applications

2014 ◽  
Vol 609-610 ◽  
pp. 1053-1059
Author(s):  
Zhong Ren ◽  
Qiu Lin Tan ◽  
Chen Li ◽  
Tao Luo ◽  
Ting Cai ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Pressure Sensor ◽  
Simulation Analysis ◽  
Zirconia Ceramic ◽  
Passive Measurement ◽  
Series Resonance ◽  
Wide Range ◽  
Spiral Inductors ◽  
Temperature Applications

A wide range pressure sensor is designed based on the theoretical basis of LC series resonance circuit model to realize the wireless passive measurement in the harsh environment, such as high temperature and high pressure. The capacitive pressure sensitive device is devised by the technology of high-temperature co-fired ceramics (HTCC) to form nine density cavities in zirconia ceramic substrates, and thick film technology to print capacitance plates and planar spiral inductors. The theoretical calculation and simulation analysis of the designed sensor are made respectively under high pressure (10MPa) and temperature (600 °C), the results of which verify the feasibility of the design in a wide range of pressure for high-temperature applications, and provide the reliable theory basis for the fabrication of wide range pressure sensor.

Analysis of Assembling and Working Stress of Compound Rings High-Pressure Vessel of 5GPa

2010 ◽  
Vol 97-101 ◽  
pp. 2603-2606
Author(s):  
Jian Hua Rao ◽  
Q.F. Shen ◽  
C. Wang
Keyword(s):  
High Pressure ◽  
Pressure Vessel ◽  
Simulation Analysis ◽  
Structural Parameters ◽  
Axial Stress ◽  
Horizontal Fracture ◽  
High Pressure Vessel ◽  
Working Stress ◽  
Press Fitting ◽  
Design And Manufacture

To improve the working performance of the compound rings high-pressure vessel, the different assembly and structural parameters during the process of radial and axial preloading have been analyzed with the finite element method. The simulation analysis on the assembly process of room temperature press-fitting has been carried out based on the theory of contact problem with friction, and it is found that the tangential compressive prestress is uneven under the influence of friction coefficient and conicity of fitting surfaces. The main effect factors of horizontal fracture of cemented carbide core are also analyzed. Furthermore, the results of reducing the axial stress of core by different ways of applying end pressure are compared. These studies provide the guidance for the improvement in design and manufacture of compound rings.

Research on the Best Autofrettage Pressure of Ultra-High Pressure Valve Body

2015 ◽  
Vol 667 ◽  
pp. 524-529
Author(s):  
Xiu Hua Ma
Keyword(s):  
High Pressure ◽  
Simulation Analysis ◽  
Equivalent Stress ◽  
Maximum Pressure ◽  
Working Pressure ◽  
Valve Body ◽  
Ultra High Pressure ◽  
Pressure Discharge ◽  
Maximum Equivalent Stress ◽  
Autofrettage Pressure

This paper takes the ultra-high pressure (103.5MPa) valve body as the research object and adopts the finite element method to perform simulation analysis on the three bearing conditions involved with the valve body, i.e., autofrettage pressure, discharge and working pressure. The simulation shows identical results with the theoretical calculation. The relationship between the maximum equivalent stress and autofrettage pressure during the operation of the valve is obtained from the simulation results; therefore the best autofrettage pressure is determined. When determining the maximum value of autofrettage pressure, the maximum pressure, at which reverse yield does not happen, and the complete yield pressure shall be taken into consideration, with the smaller value of the two taken after comparison and analysis. When the size of the valve body is fixed at certain value, the best autofrettage pressure is not a fixed value, but it varies with the change of working pressure.

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