Dynamic Simulation of the Impact Mechanism of Hydraulic Rock Drill Based on AMESim

2012 ◽  
Vol 452-453 ◽  
pp. 1296-1300 ◽  
Author(s):  
Zhong Jun Yin ◽  
Yi Xin Hu
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Simulation ◽  
Theoretical Basis ◽  
Impact Mechanism ◽  
Rock Drill ◽  
The Impact ◽  
Piston Chamber ◽  
Dynamics Process

Through analysis of the dynamics process of hydraulic rock drill, this paper builds a model of the impact mechanism of hydraulic rock drill with AMESim software, obtains curves of the displacements of the piston and valve core, and gets the pressure of the piston chamber. The dynamic analysis of the results indicates that the model of the impact mechanism of hydraulic rock drill agrees well with the principle of hydraulic rock drill. As a result, this research provides a new theoretical basis and method for the hydraulic rock drill.

Research on Impact Mechanism of Hydraulic Rock Drill

2009 ◽  
Vol 16-19 ◽  
pp. 313-317
Author(s):  
Wen Yuan Tian ◽  
Ping Liu ◽  
Guang Qi Cai
Keyword(s):  
Mathematical Model ◽  
Dynamic Simulation ◽  
Impact Mechanism ◽  
Supply Pressure ◽  
Rock Drill ◽  
Hydraulic Impact ◽  
Working Principle ◽  
Working Performance ◽  
The Impact ◽  
Double Chamber

This paper introduces the working principle of the impact mechanism which is belonging to the double-chamber scavenge oil hydraulic rock drill. On the basis of some fundamental hypothesis, a mathematical model of hydraulic impact mechanism is established, then carrying out a dynamic simulation. Focusing on the influence of supply pressure, supply flow and precharge pressure on the working performance of impact mechanism, some research is implemented, and some regularity conclusions are obtained.

Dynamics Analysis of Multi-Degree-of-Freedom Motion Simulator Based on Hamilton Method

2011 ◽  
Vol 138-139 ◽  
pp. 434-441
Author(s):  
Yue Fa Zhou ◽  
Fang Lue Huang ◽  
Zhi Yong Zhang ◽  
Tian Shu Song
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Simulation ◽  
Theoretical Basis ◽  
Degree Of Freedom ◽  
New Method ◽  
Dynamics Analysis ◽  
Hamilton Principle ◽  
Motion Simulator

In this paper, a new method is given about using Hamilton principle to establish multi-degree-of-freedom electro-hydraulic mix-drive motion simulator model. And dynamic analysis is performed based on kinetics and kinematics. The simulation is done on multi-degree-of-freedom electro-hydraulic mix-drive motion simulator and Hamilton principle. As cases, some calculating results on dynamic simulation are plotted with the help of Matlab Lagrange. The work in the paper could be seen as a theoretical basis to research motion simulator in depth.

Leakage Simulation of the Impactor of Hydraulic Rock Drill

2013 ◽  
Vol 744 ◽  
pp. 113-117
Author(s):  
Zhong Jun Yin ◽  
Guang Tian Xia ◽  
Tian Han
Keyword(s):  
Mathematical Model ◽  
Simulation Analysis ◽  
Influence Factors ◽  
Dynamics Simulation ◽  
Effective Control ◽  
Impact Mechanism ◽  
Rock Drill ◽  
Leakage Mechanism ◽  
The Impact ◽  
The Mathematical Model

In order to research the leakage mechanism and influence factors of the hydraulic rock drill, the mathematical model of the leakage is established, and combined with the structure and working principle of the hydraulic rock drill, the impact mechanism dynamics simulation model is built by the AMESim software. Through the analysis of the leakage model, the influence of differential pressure, sealing length and clearance on the leakage is got, the simulation analysis results are consistent with the mathematical model conclusions, and the results have important guiding significance on the clearance selection and the effective control of leakage of the impact mechanism.

Dynamic Analysis of Leveling Mechanism of New Goose-Neck Jib Gondola

2013 ◽  
Vol 546 ◽  
pp. 89-92
Author(s):  
Yi Tao ◽  
Jian Feng Guo ◽  
Kai Zhou ◽  
Xin Feng Wang ◽  
Xiao Jun Du
Keyword(s):  
Angular Velocity ◽  
Dynamic Analysis ◽  
Dynamic Simulation ◽  
Theoretical Basis ◽  
Rational Design ◽  
Angular Displacement ◽  
Virtual Prototype ◽  
Velocity Curve ◽  
Displacement Curve ◽  
Important Evidence

In this paper, a virtual prototype has been built for new goose-neck jib gondola with type of CD250 on the basis of ADAMS, and then, the dynamic simulation to the effect of the leveling mechanism is analyzed to obtain the angular velocity curve and angular displacement curve of the basket, which can be regarded as the important evidence to analyze the operation effectiveness of the leveling mechanism of gondola. The approach provides the sufficient theoretical basis for rational design of the structure of gondola as well as product optimization.

scholarly journals Impact Mechanism of the Ecological Vulnerability of Highly Developed Islands Based on the Bayesian Network Model—Applied to the Changshan Islands

2021 ◽  
Vol 18 (8) ◽  
pp. 4150
Author(s):  
Keyu Qin ◽  
Haijun Huang ◽  
Jingya Liu ◽  
Liwen Yan ◽  
Yanxia Liu ◽  
...  
Keyword(s):  
Bayesian Network ◽  
Network Model ◽  
Geographical Information ◽  
Global Changes ◽  
Bayesian Network Model ◽  
Island Ecosystems ◽  
Impact Mechanism ◽  
The North ◽  
Ecological Vulnerability ◽  
The Impact

Islands are one of the most sensitive interfaces between global changes and land and sea dynamic effects, with high sensitivity and low stability. Therefore, under the dynamic coupling effect of human activities and frequent natural disasters, the vulnerability of the ecological environment of islands shows the characteristics of complexity and diversity. For the protection of island ecosystems, a system for the assessment of island ecosystems and studies on the mechanism of island ecological vulnerability are highly crucial. In this study, the North and South Changshan Islands of China were selected as the study area. Considering various impact factors of island ecological vulnerability, the geographical information systems (GIS) spatial analysis, field surveys, data sampling were used to evaluate island ecological vulnerability. The Bayesian network model was used to explore the impact mechanism of ecological vulnerability. The results showed that the ecological vulnerability of the North Changshan Island is higher than that of the South Changshan Island. Among all the indicators, the proportion of net primary productivity (NPP) and the steep slope has the strongest correlation with ecological vulnerability. This study can be used as references in the relevant departments to formulate management policies and promote the sustainable development of islands and their surrounding waters

scholarly journals Use of Dynamic Analysis to Investigate the Behaviour of Short Neutral Sections in the Overhead Line Electrification

2021 ◽  
Vol 6 (5) ◽  
pp. 62
Author(s):  
John Morris ◽  
Mark Robinson ◽  
Roberto Palacin
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Simulation ◽  
Model Simulation ◽  
Analysis Tool ◽  
Overhead Line ◽  
Element Analysis ◽  
Novel Approach ◽  
Section Model ◽  
The Uk ◽  
Neutral Section

The ‘short’ neutral section is a feature of alternating current (AC) railway overhead line electrification that is often unreliable and a source of train delays. However hardly any dynamic analysis of its behaviour has been undertaken. This paper briefly describes the work undertaken investigating the possibility of modelling the behaviour using a novel approach. The potential for thus improving the performance of short neutral sections is evaluated, with particular reference to the UK situation. The analysis fundamentally used dynamic simulation of the pantograph and overhead contact line (OCL) interface, implemented using a proprietary finite element analysis tool. The neutral section model was constructed using physical characteristics and laboratory tests data, and was included in a validated pantograph/OCL simulation model. Simulation output of the neutral section behaviour has been validated satisfactorily against real line test data. Using this method the sensitivity of the neutral section performance in relation to particular parameters of its construction was examined. A limited number of parameter adjustments were studied, seeking potential improvements. One such improvement identified involved the additional inclusion of a lever arm at the trailing end of the neutral section. A novel application of pantograph/OCL dynamic simulation to modelling neutral section behaviour has been shown to be useful in assessing the modification of neutral section parameters.

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