Research of Resonant Machine Nonlinear Vibrating Characteristics

2014 ◽  
Vol 494-495 ◽  
pp. 641-644
Author(s):  
Hua Kai Wang
Keyword(s):  
Time Integration ◽  
Coupling Model ◽  
Test System ◽  
Bench Test ◽  
Testing System ◽  
Amplitude Curve ◽  
Core Component ◽  
Kinematic Equation ◽  
Stress Curve ◽  
Bench Testing

Studying the core component of the resonant machine by building the bench test system, utilizing the nonlinear analysis function of Abaqus/Explicit to solve the problem that the rigid-flexible coupling model can`t take the material nonlinearity into adequate consideration. Simulating the nonlinearity of the vibrating beam by doing time integration over the kinematic equation to obtain an accurate and reliable result. Firstly, simplifying the bench testing system to simulating the low frequent vibration; And then, comparing the acceleration root value between the test data and the simulating result on the characteristically point to check the reliability and accuracy of the simulation; By studying the hammer vibrating amplitude curve and shear stress curve changing along the rubber spring thickness, providing a preference for the optimization.

Research on Bench Test System for Vehicle ABS Performance

2013 ◽  
Vol 321-324 ◽  
pp. 1633-1636
Author(s):  
Ji Du He ◽  
Yong Jun Zheng ◽  
Yu Tan ◽  
Gang Wu ◽  
Zhao Feng Liu
Keyword(s):  
Asynchronous Motor ◽  
Performance Testing ◽  
Test System ◽  
Wheel Speed ◽  
Bench Test ◽  
Testing System ◽  
Energy Compensation ◽  
Speed Change ◽  
Systematic Structure ◽  
Bench Testing

According to the ideal wheel speed change curve during the ABS braking and the vehicle inertia electromechanical mixed analog principle, the bench testing system for vehicle ABS performance was designed. In order to improve the reliability of the wheel velocity detection and optimize the systematic structure, the method of using the free roller to detect wheel speed and the regenerative braking energy compensation of asynchronous motor were proposed. The results show that designed test bench system can achieve ABS performance testing.

Framework and performance analysis of college English testing system based on data mining technology

2021 ◽  
pp. 1-11
Author(s):  
Liu Narengerile ◽  
Li Di ◽  
Keyword(s):  
Data Mining ◽  
Test System ◽  
Test Time ◽  
Testing System ◽  
Test Results ◽  
System Software ◽  
Examination System ◽  
Mining Technology ◽  
College English ◽  
And Performance

At present, the college English testing system has become an indispensable system in many universities. However, the English test system is not highly humanized due to problems such as unreasonable framework structure. This paper combines data mining technology to build a college English test framework. The college English test system software based on data mining mainly realizes the computer program to automatically generate test papers, set the test time to automatically judge the test takers’ test results, and give out results on the spot. The test takers log in to complete the test through the test system software. The examination system software solves the functions of printing test papers, arranging invigilation classrooms, invigilating teachers, invigilating process, collecting test papers, scoring and analyzing test papers in traditional examinations. Finally, this paper analyzes the performance of this paper through experimental research. The research results show that the system constructed in this paper has certain practical effects.

System Level Bench Test for Trailing Arm Strength Estimation

2006 ◽  
Author(s):  
Jaychandar Muthu ◽  
Kanak Soundrapandian ◽  
Jyoti Mukherjee
Keyword(s):  
Failure Mode ◽  
Real Life ◽  
Element Model ◽  
Suspension System ◽  
System Level ◽  
Bench Test ◽  
Component Level ◽  
Arm Strength ◽  
Bench Testing ◽  
Nonlinear Finite Element Model

For suspension components, bench testing for strength is mostly accomplished at component level. However, replicating loading and boundary conditions at the component level in order to simulate the suspension system environment may be difficult. Because of this, the component's bench test failure mode may not be similar to its real life failure mode in vehicle environment. A suspension system level bench test eliminates most of the discrepancies between simulated component level and real life vehicle level environments resulting in higher quality bench tests yielding realistic test results. Here, a suspension level bench test to estimate the strength of its trailing arm link is presented. A suspension system level nonlinear finite element model was built and analyzed using ABAQUS software. The strength loading was applied at the wheel end. The analysis results along with the hardware test correlations are presented. The reasons why a system level test is superior to a component level one are also highlighted.

Piston Ring-Cylinder Bore Friction Modeling in Mixed Lubrication Regime: Part II—Correlation With Bench Test Data

1999 ◽  
Vol 123 (1) ◽  
pp. 219-223 ◽  
Author(s):  
Ozgen Akalin ◽  
Golam M. Newaz
Keyword(s):  
Friction Coefficient ◽  
Test Data ◽  
Piston Ring ◽  
Normal Load ◽  
Test System ◽  
Mixed Lubrication ◽  
Contact Temperature ◽  
Bench Test ◽  
Crank Angle ◽  
Contact Width

A bench friction test system for piston ring and liner contact, which has high stroke length and large contact width has been used to verify the analytical mixed lubrication model presented in a companion paper (Part 1). This test system controls the speed, temperature and lubricant amount and records the friction force, loading force, crank angle signal and contact temperature data simultaneously. The effects of running speed, applied normal load, contact temperature and surface roughness on friction coefficient have been investigated for conventional cast-iron cylinder bores. Friction coefficient predictions are presented as a function of crank angle position and results are compared with bench test data. Analytical results correlated well with bench test results.

A New Hardware-in-the-Loop Test System for Electronic Control Unit of Dual-Clutch Transmission Vehicle

2012 ◽  
Vol 490-495 ◽  
pp. 13-18 ◽  
Author(s):  
Ran Chen ◽  
Lin Mi ◽  
Wei Tan
Keyword(s):  
Numerical Simulation ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Test System ◽  
Testing System ◽  
Primary Concern ◽  
Hardware In The Loop ◽  
Electronic Control ◽  
Simulation Environment ◽  
Dual Clutch Transmission

Hardware-in-the-loop simulation (HILS) is a scheme that incorporates some hardware components of primary concern in the numerical simulation environment. This paper discusses the implementation and benefits of using the HIL testing system for electronic control unit of dual-clutch transmission (DCT) vehicle.

Design of Remote Test System for Fiber Bragg Grating Based on LabVIEW

2013 ◽  
Vol 694-697 ◽  
pp. 992-996
Author(s):  
Chun Tong Liu ◽  
Yang Zhang ◽  
Zhen Xin He ◽  
Hong Cai Li
Keyword(s):  
Fiber Bragg Grating ◽  
Data Storage ◽  
Test System ◽  
Fiber Optic Sensor ◽  
Bragg Grating ◽  
Testing System ◽  
Sensing System ◽  
Actual Use ◽  
New Type ◽  
Control Port

As a new type of wavelength modulated fiber optic sensor, Fiber Bragg Grating (FBG) has been widely used in many fields. The majority of FBG demodulation device just detect the absolute wavelength, however, the change of wavelength is often concerned in actual use. For the purpose of realizing the FBG sensing system automated test, using the remote control port of the Q8384 spectrometer and the LabVIEW language to develop the remote automation testing system, and with the friendly interface of FBG sensing test interface. Realized the real-time monitoring and data storage capabilities by the processing of the collecting data and the FBG sensing remote test system is more practical.

Research on Hydraulic Components Test System Based on Proportional Control Technology

2014 ◽  
Vol 912-914 ◽  
pp. 744-747
Author(s):  
Yao Li ◽  
Jian Gang Yi
Keyword(s):  
Performance Testing ◽  
Test System ◽  
Testing System ◽  
Control Technology ◽  
System Construction ◽  
Hydraulic Systems ◽  
Proportional Control ◽  
Production Problem

Proportional control technology is widely used in many hydraulic systems. In order to measure the characteristics of hydraulic components, it is necessary to establish hydraulic components test system based on proportional control technology. In this paper, the test contents of hydraulic components are analyzed, the performance testing system is designed, the system construction is presented, and the computer test software is developed. The application results showed that the developed system has good value, which can not only be used directly in enterprise to solve the production problem, but also improve the utilization and reliability of hydraulic components.

Visual and Versatile Hybrid Seismic Testing System Incorporated With Non-Linear Finite Element Analysis

2005 ◽  
Author(s):  
Michiya Sakai ◽  
Ohtomo Keizo ◽  
Yutaka Hagiwara ◽  
Yoshihiro Dozono ◽  
Mayumi Fukuyama ◽  
...  
Keyword(s):  
Finite Element ◽  
Time Integration ◽  
Dynamic Test ◽  
Testing System ◽  
Element Analysis ◽  
Visualization System ◽  
Linear Finite Element ◽  
Non Linear ◽  
Incremental Formulation ◽  
Simulation Testing

Hybrid simulation/testing systems have been developed incorporating a non-linear finite element method with a pseudo-dynamic test. In order to ensure stability and efficiency for time integration, the incremental formulation of the α-OS method has been implemented on this system. Visualization system has also been integrated to recognize both numerical simulation for whole systems and laboratory testing for local parts. Numerical hybrid examinations of the soil structure interaction problem have been conducted on this system. By these results, validity and effectiveness of this system has been demonstrated.

Disquisition of Testing System for BMBS Vacuum Booster

2012 ◽  
Vol 190-191 ◽  
pp. 1351-1354
Author(s):  
Yan Shi ◽  
Yi Lu ◽  
Xue Ying Wang
Keyword(s):  
High Speed ◽  
Computer Control ◽  
Performance Testing ◽  
Test System ◽  
Testing System ◽  
Test Items ◽  
Sealing Performance ◽  
On Line ◽  
High Speed Data ◽  
Line Test

To solve the problem of testing BMBS (BLOW-OUT MONITORING AND BRAKE SYSTEM) vacuum booster performance, a double-station and on-line test system for BMBS vacuum booster was designed. It adopts high-speed data collection method and computer control technology. This system can test the performance in non-BMBS condition and BMBS condition. The test items mainly include dynamic characteristic and sealing performance under each condition. The double stations are independent and have no interference with each other. The system fills up the blank of performance testing about BMBS vacuum booster. To verify this system, experiments were conducted with the vacuum booster which installed the BMBS technology. The experiment results show that the system can do well in testing the performance of BMBS vacuum booster in high precision. The sealing performance resolution is 0.01kPa and the pressure resolution is 1N.

Reversible Bending Fatigue Testing System Design Concepts for Spent Fuel Vibration Integrity Study

2014 ◽  
Author(s):  
Hao Jiang ◽  
Jy-An John Wang ◽  
Hong Wang
Keyword(s):  
Spent Nuclear Fuel ◽  
Fatigue Testing ◽  
Test System ◽  
Testing System ◽  
Spent Fuel ◽  
Element Analysis ◽  
Bending Fatigue ◽  
Test Setup ◽  
Design Concepts ◽  
Vertical Test

The dynamic analyses of a reversible bending fatigue testing system designed for the spent nuclear fuel (SNF) vibration integrity study was presented in this paper. Different design concepts were evaluated to assist the U-frame tester development. A finite element analysis (FEA) based on the vertical test setup was established to simulate the U-frame test system dynamic performances. The FEA results provided general guideline on predicting the dynamic behaviors of U-frame bending fatigue system for testing SNF. The initial vertical test setup design concepts were investigated in detail and the associated deficiencies were also discussed in the paper. The horizontal test setup was also evaluated using FEA. Based on dynamic analysis results, the horizontal test setup with symmetric loading profile was recommended for developing a reversible U-frame bending fatigue testing system.

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