Vibration Analysis of New Type Pipeline-Cleaning Robot

2010 ◽  
Vol 139-141 ◽  
pp. 2172-2177
Author(s):  
Qing Zhong He ◽  
Wen Chun Zhao ◽  
Jia Wang ◽  
Yan Ling Zhang ◽  
Ming Chao Wang
Keyword(s):  
Experimental Study ◽  
Dynamic Simulation ◽  
Dynamic Characteristics ◽  
Simulation Study ◽  
Vibration Analysis ◽  
Simulation Software ◽  
Control Module ◽  
Cleaning Robot ◽  
New Type ◽  
The Stability

The new type of pipeline-cleaning robot discussed in this paper is developed to clean pipelines within the diameter range 200mm-250mm, which is propelled by using screw locomotion. With the help of CATIA, the modeling & simulation software, the simulation model of the robot and its vibration analysis has been obtained. From the analysis, dynamic characteristics of pipeline robot vary with the output parameters of control module and the structures of robot joints. Stimulated vibration has very little influences on the whole machine. The stability and reliability of the robot have been proven. According to the experimental study of principle prototype and dynamic simulation study of the virtual prototype, dynamic characteristics can be improved by optimizing the structures of robot and the related output parameters of control module, which contributes to the improvement of its motion stability. Therefore, it is believed that the robot has great value in practical use.

Dynamic Simulation of Large Flow Solenoid Valve

2016 ◽  
Author(s):  
Z. Liu ◽  
X. Han ◽  
Y. F. Liu
Keyword(s):  
Dynamic Model ◽  
Dynamic Simulation ◽  
Dynamic Characteristics ◽  
Nonlinear Dynamic ◽  
Structural Parameters ◽  
Solenoid Valve ◽  
Simulation Software ◽  
Experimental Results ◽  
Nonlinear Dynamic Model ◽  
Large Flow

A nonlinear dynamic model of a large flow solenoid is presented with the multi-physics dynamic simulation software called SimulationX. Validation is performed by comparing the experimental results with the simulated ones. The dynamic characteristics of the large flow solenoid valve are analyzed. Different structural parameters are modified in this research and the diameter of the orifice is proved to be one of the most important parameters which influences the pressure response most.

Experimental Study on Journal Gas Bearing with Axial Slot for a Miniature Air Turboexpander

2012 ◽  
Vol 220-223 ◽  
pp. 611-614
Author(s):  
Ru Gang Chen ◽  
Ya Jun Nie ◽  
Quan Zhou ◽  
Chao Gong ◽  
Tao Chen
Keyword(s):  
Experimental Study ◽  
Instability Threshold ◽  
Radial Clearance ◽  
Experimental Investigations ◽  
New Type ◽  
The Stability ◽  
The Relationship ◽  
Gas Bearing

A new type of hydrostatic journal gas bearing with axial slot of tangential gas entry for miniature air turboexpander is firstly developed in this paper. This bearing configuration is presented and constructed to fit manufacture simplicity. The experimental investigations are carried out to reveal the relationship between bearing parameters and instability threshold speed. It is feasible to increase the stability of hydrostatic journal gas bearing by adopting this kind of configuration with axial slot of tangential gas entry. Some valuable tested results are obtained to reveal the optimum slot height and radial clearance for this miniature air turboexpander.

scholarly journals Vibration analysis of a light truck by 3d dynamic vehicle vibration model

2015 ◽  
Vol 18 (4) ◽  
pp. 85-93
Author(s):  
Tuan Hoang Truong ◽  
Nhan Huu Tran ◽  
Lam Quang Tran
Keyword(s):  
Simulation Model ◽  
Dynamic Characteristics ◽  
Vibration Analysis ◽  
Vehicle Design ◽  
Vibration Model ◽  
Calculation Results ◽  
The Stability ◽  
Vibration Simulation ◽  
Vehicle Vibration Model

Vehicle vibration calculations play significant and extremely important role, and is based mainly help to assess the stability, vertical dynamic safe, smooth during vehicle’s operation. Full car vibration simulation model (3D) is used to conduct research. The required parameters are determined on the available SYM T880 car. Calculation results are analyzed in both time and frequency domain, helping more comprehensive assessment of vertical dynamic characteristics of T880 truck in particular as well as the basis of reference to conduct model, vibration evaluation of other kind of vehicles, contribute to improving the quality of vehicle design is more comfortable and safer.

scholarly journals Experimental Study and Simulation Analysis on Electromagnetic Characteristics and Dynamic Response of a New Miniature Digital Valve

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Meisheng Yang ◽  
Junhui Zhang ◽  
Bing Xu
Keyword(s):  
Experimental Study ◽  
Dynamic Simulation ◽  
Dynamic Characteristics ◽  
Electromagnetic Force ◽  
Simulation Analysis ◽  
Electromagnetic Properties ◽  
Electromagnetic Simulation ◽  
Electromagnetic Structure ◽  
Electromagnetic Characteristics ◽  
Simulation Results

In order to get the better electromagnetic characteristics of the micro digital valve, the larger electromagnetic force should be obtained in the smaller electromagnetic structure. The electromagnetic force directly determines the electromagnetic properties of the miniature digital valve. The electromagnetic force test is studied in the paper. The results of electromagnetic simulation results are basically consistent with the experimental results. The simulation model is reliable and accurate. The dynamic simulation results show that the dynamic characteristics of the miniature digital valve meet the requirements of the digital hydraulic technology. Design of the new micro digital valve is reasonable.

Dynamic Simulation of Electric Nail Gun Test Rig

2011 ◽  
Vol 58-60 ◽  
pp. 1252-1257
Author(s):  
Ze Yu Weng ◽  
Gan Xiang ◽  
Geng Yuan Gao ◽  
Hong Gang Ding
Keyword(s):  
Dynamic Simulation ◽  
Dynamic Characteristics ◽  
Parametric Analysis ◽  
Performance Test ◽  
Simulation Software ◽  
Prototype Model ◽  
Test Rig ◽  
Working Principle ◽  
Design Requirements ◽  
The Relationship

Performance test rig of the electric nail gun consists of five partsand the key one of which is the loading mechanism. By analyzing its working principle, virtual prototype model of the loading mechanism was established using simulation software ADAMS. Through simulation of the prototype model, the design requirements of the loading mechanism were given. Then, using the method of parametric analysis, dynamic characteristics of loading mechanism was obtained. Eventually, the relationship between the preload force of loading spring and the implanted force of the sample nail was presented.

Structural Design and Dynamic Analysis of Anti-Reversion Mechanism of Feed Mechanism

2013 ◽  
Vol 694-697 ◽  
pp. 45-50
Author(s):  
Li Yang ◽  
Zhi Li Sun ◽  
Yu Ning Wang ◽  
Qian Li Zhao
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Characteristics ◽  
Structural Design ◽  
Virtual Prototyping ◽  
Simulation Software ◽  
Dynamics Simulation ◽  
Characteristics Analysis ◽  
Virtual Prototyping Technology ◽  
Motion Characteristics ◽  
The Stability

Because of easy for the bomb-stirring system of feed mechanism to reverse at its non-working position, which can affect the stability of the whole system. Virtual Prototyping Technology can help people to complete the design of overall structure of feed mechanism and anti-reversion mechanism of automaton. ADAMS, one kind of dynamics simulation software, can help to complete the motion characteristics analysis of anti-reversion mechanism, achieving the motion law of mechanism parts and movement dynamic characteristics, as well as verifying the rationality of the design of mechanism.

Dynamic Characteristics Research of Magneto-Rheological Fluid Engine Mount

2015 ◽  
Vol 752-753 ◽  
pp. 913-917
Author(s):  
Gong Yu Pan ◽  
Qian Qian Wang ◽  
Xin Yang
Keyword(s):  
Dynamic Characteristics ◽  
Vibration Isolation ◽  
Dynamic Stiffness ◽  
Simulation Software ◽  
New Type ◽  
Engine Mount ◽  
Magneto Rheological ◽  
Stiffness And Damping ◽  
Vibration Isolation Performance ◽  
Isolation Performance

In order to improve the vibration isolation performance of engine mount, a new type of magneto-rheological semi-active mount with multiple inertia tracks is designed based on the existing magneto-rheological semi-active mount . The mechanical model is established according to the mount. The expression of the dynamic stiffness and damping lag angle is deduced, then the dynamic characteristics is simulated in the simulation software. At the same time, verify this model correct by the experiments.

The Simulation Study of a New-Type Frictionless Pneumatic Cylinder

2013 ◽  
Vol 278-280 ◽  
pp. 337-340 ◽  
Author(s):  
Xiao Zhu ◽  
Guo Liang Tao ◽  
Peng Fei Qian ◽  
De Yuan Meng ◽  
He Zuo
Keyword(s):  
Simulation Study ◽  
Structural Parameters ◽  
Pneumatic Cylinder ◽  
Time Varying ◽  
Servo Systems ◽  
Numerical Solution Method ◽  
Load Carrying ◽  
New Type ◽  
The Stability ◽  
Air Film

A new-type frictionless pneumatic cylinder with an aerostatic bearing as its piston can decrease the friction significantly. The stability and the leakage of this cylinder mostly depend on the radial load carrying capacity(RLCC) and the air consuming of the bearing. In order to make a better use of this cylinder in pneumatic servo systems, a simulation study on the influence of the structural parameters and time-varying surrounding parameters to this cylinder was carried out on the basis of a numerical solution method based on finite element method(FEM) which was constructed to solve Reynolds equations in this paper. Simulation shows that introducing a recess chamber at the end of the orifice hole can increase the RLCC significantly and smooth the sharp distribution of the pressure around the orifices in the air film, which makes the bearing working more stable; the time-varying parameters have a combined effects on the performance characteristics of the bearing.

Experimental Study on a New Type of Cooling Device Used in High Heat Dissipation of CPU

2012 ◽  
Vol 241-244 ◽  
pp. 156-159
Author(s):  
Meng Liu ◽  
Fang Wang ◽  
Lei Lou ◽  
Sheng Liang Dai ◽  
Wei Feng Da
Keyword(s):  
Experimental Study ◽  
Temperature Distribution ◽  
Heat Dissipation ◽  
Evaporative Cooling ◽  
High Heat ◽  
Air Cooling ◽  
Cooling Device ◽  
New Type ◽  
The Stability ◽  
Temperature Test

A new type of cooling device used for server is designed in this paper. A small type of server is taken as a research object to compare the effect of air cooling and evaporative cooling under different CPU power consumption. The effects of this research are discussed on evaporative cooling for the stability of the CPU heat dissipation and the cooler on other components. The results show that the temperature distribution of the server’s case is more uniform and the temperature test of the CPU is more stable when it is cooled by evaporative cooling.

scholarly journals Simulation Study of Dynamic Characteristics of Hot Pepper Harvester

2020 ◽  
Vol 45 (4) ◽  
pp. 333-340
Author(s):  
Seokho Kang ◽  
Junhee Kim ◽  
Yeongsu Kim ◽  
Yushin Ha ◽  
Seungmin Woo
Keyword(s):  
Dynamic Simulation ◽  
Dynamic Characteristics ◽  
Simulation Study ◽  
Simulation Program ◽  
Hot Pepper ◽  
Loading Conditions ◽  
Accident Rate ◽  
Safety Accident ◽  
Full Loading

Abstract Purpose Determining the safety conditions of a hot pepper harvester to mechanize harvesting. Methods The dynamic characteristics of a hot pepper harvester were analyzed with the dynamic simulation program RecurDyn. Results The pepper harvester can climb a maximal slope of 25° under full loading conditions; the maximal allowable height of an obstacle over which the harvester can drive is 450 mm; the minimal rotation radius during a spin turn is 870 mm. Conclusions Considering its dynamic characteristics, the harvester can be applied on over 95% of domestic upland fields. The safety accident rate can be decreased with the use of the spin turn method. In conclusion, the dynamic characteristics are sufficiently safe for the domestic upland fields.

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