Simulation Research on Hydraulic Brake System of Low-Floor Light-Rail Vehicle

The paper discussed the working principle of the hydraulic brake system, and built a model in the simulation by using AMESim to analyze performance of this system. The paper also established a test bench of hydraulic brake system, and the test result coincided with the consequence of simulation, thus to prove the simulation model and method reasonable. This simulation can shorten design cycle of hydraulic brake system apparently, and it contributes a good method to assistant brake system design.

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Modeling and Simulation of Vehicle Hydraulic ABS Based on AMEsim

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.590.441 ◽

2012 ◽

Vol 590 ◽

pp. 441-445

Author(s):

Qian Zhao ◽

Jia Jun Duan ◽

Cheng Wang

Keyword(s):

Hydraulic System ◽

System Modeling ◽

Brake System ◽

Relevant Parameter ◽

Work Process ◽

Braking System ◽

Hydraulic Brake ◽

Working Principle ◽

Brake Performance ◽

Hydraulic System Modeling

At present, the ABS braking system has been widely used in vehicle brake system, has become the important mechanism of automobile brake performance. This paper use the advantage of AMESim software for hydraulic system modeling, and build up the the model of ABS for the automobile brake system according to ABS system working principle, Simulation of automobile ABS hydraulic brake system work process, through the relevant parameter settings, compare and analysis the impacts made by some elements of the whole ABS system, finally make the foundations for the brake system for further optimization and improvement.

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The Research of Magnetic Track Brake System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.427-429.1342 ◽

2013 ◽

Vol 427-429 ◽

pp. 1342-1345

Author(s):

Yu Chun Pei

Keyword(s):

Brake System ◽

Regenerative Braking ◽

Light Rail ◽

Emergency Braking ◽

Braking System ◽

Rail Vehicle ◽

Load Change ◽

Parking Brake ◽

Braking Force

This paper introduces the braking system scheme of low floor light rail vehicle, applying the regenerative braking and magnetic track brake, realizes service braking, emergency braking, parking brake and holding brake, also adjusts the braking force according to the load change.

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Research on double tower dryer based on air brake system of rail vehicle

Journal of Physics Conference Series ◽

10.1088/1742-6596/1948/1/012120 ◽

2021 ◽

Vol 1948 (1) ◽

pp. 012120

Author(s):

BuDu Xu ◽

Xuan Zhang ◽

ShiXi Zhang ◽

QingXuan Li ◽

XiaoYu Zhu

Keyword(s):

Brake System ◽

Rail Vehicle ◽

Air Brake System

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A simplified iterative approach for testing the pulse derailment of light rail vehicles across a viaduct to near-fault earthquake scenarios

Proceedings of the Institution of Mechanical Engineers Part F Journal of Rail and Rapid Transit ◽

10.1177/0954409720987410 ◽

2021 ◽

pp. 095440972098741

Author(s):

Ling-Kun Chen ◽

Peng Liu ◽

Li-Ming Zhu ◽

Jing-Bo Ding ◽

Yu-Lin Feng ◽

...

Keyword(s):

Ground Motions ◽

Simulation Software ◽

Light Rail ◽

Rail Transit ◽

Light Rail Transit ◽

Seismic Responses ◽

Near Fault ◽

Rail Vehicle ◽

Pulse Type ◽

The Impact

Near-fault (NF) earthquakes cause severe bridge damage, particularly urban bridges subjected to light rail transit (LRT), which could affect the safety of the light rail transit vehicle (“light rail vehicle” or “LRV” for short). Now when a variety of studies on the fault fracture effect on the working protection of LRVs are available for the study of cars subjected to far-reaching soil motion (FFGMs), further examination is appropriate. For the first time, this paper introduced the LRV derailment mechanism caused by pulse-type near-fault ground motions (NFGMs), suggesting the concept of pulse derailment. The effects of near-fault ground motions (NFGMs) are included in an available numerical process developed for the LRV analysis of the VBI system. A simplified iterative algorithm is proposed to assess the stability and nonlinear seismic response of an LRV-reinforced concrete (RC) viaduct (LRVBRCV) system to a long-period NFGMs using the dynamic substructure method (DSM). Furthermore, a computer simulation software was developed to compute the nonlinear seismic responses of the VBI system to pulse-type NFGMs, non-pulse-type NFGMs, and FFGMs named Dynamic Interaction Analysis for Light-Rail-Vehicle Bridge System (DIALRVBS). The nonlinear bridge seismic reaction determines the impact of pulses on lateral peak earth acceleration (Ap) and lateral peak land (Vp) ratios. The analysis results quantify the effects of pulse-type NFGMs seismic responses on the LRV operations' safety. In contrast with the pulse-type non-pulse NFGMs and FFGMs, this article's research shows that pulse-type NFGM derail trains primarily via the transverse velocity pulse effect. Hence, this study's results and the proposed method can improve the LRT bridges' seismic designs.

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The Technical Development for Increasing ROP with Particle Impact Drilling in China

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.904.292 ◽

2014 ◽

Vol 904 ◽

pp. 292-295 ◽

Cited By ~ 1

Author(s):

Jian Zhao ◽

Yi Ji Xu

Keyword(s):

Field Test ◽

Hard Rock ◽

Rock Breaking ◽

Particle Impact ◽

Sound Effect ◽

Deep Well ◽

Working Principle ◽

Hard Formation ◽

Field Test Result ◽

Test Result

Field test of particle impact drilling (PID) technology was firstly carried out in deep well and hard formation in Sichuan province china on Oct. 2013. The test formation was named Xu Jiahe, which was very difficult to penetration. Field test result shows that the ROP (rate of penetration) was nearly doubled by this technology. It indicates that there is a profound application prospect of particle impact drilling, especially for hard rock formation. In this paper, the equipment and working principle was analyzed. The experiment and simulation results showed that the rock breaking efficiency was highly increased by this technology. The details of this field test were presented too in this paper that proved the sound effect of PID.

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Consistent Tangent Stiffness of a Three-Dimensional Wheel–Rail Interaction Element

International Journal of Structural Stability and Dynamics ◽

10.1142/s0219455421400101 ◽

2021 ◽

Author(s):

Quan Gu ◽

Jinghao Pan ◽

Yongdou Liu

Keyword(s):

Finite Element ◽

Quadratic Convergence ◽

Equations Of Motion ◽

Three Dimensional ◽

Light Rail ◽

Software Framework ◽

Tangent Stiffness ◽

Rail Vehicle ◽

Interaction Element ◽

Nonlinear Equations Of Motion

Consistent tangent stiffness plays a crucial role in delivering a quadratic rate of convergence when using Newton’s method in solving nonlinear equations of motion. In this paper, consistent tangent stiffness is derived for a three-dimensional (3D) wheel–rail interaction element (WRI element for short) originally developed by the authors and co-workers. The algorithm has been implemented in finite element (FE) software framework (OpenSees in this paper) and proven to be effective. Application examples of wheelset and light rail vehicle are provided to validate the consistent tangent stiffness. The quadratic convergence rate is verified. The speeds of calculation are compared between the use of consistent tangent stiffness and the tangent by perturbation method. The results demonstrate the improved computational efficiency of WRI element when consistent tangent stiffness is used.

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Theoretical Calculation and Experimental Research on Sequential Turbocharging of a Marine Diesel Engine

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.305.416 ◽

2011 ◽

Vol 305 ◽

pp. 416-422

Author(s):

Peng Qi Zhang ◽

Qing Lin He ◽

Yin Yan Wang

Keyword(s):

Diesel Engine ◽

Theoretical Calculation ◽

Experimental Research ◽

Marine Diesel Engine ◽

Test Results ◽

Low Load ◽

Marine Diesel ◽

Working Principle ◽

Test Result

The paper introduces the working principle of the sequential turbo-charging (STC) system of multi-turbocharger. To improve low-load performance and operating economy of the 234V12 diesel engine, a STC system of multi-turbocharger for the diesel engine was designed. Theoretical calculation and experimental research was done on this improved marine diesel engine. Then, a 3-phase STC system is presented by analyzing and comparing the test result and the switching boundary of this system is confirmed. The test results show that the low-load performance is improved obviously by use of multi-turbocharger STC system.

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