An electro-dynamic 3-dimensional vibration test bed for engineering testing

2017 ◽  
Author(s):  
Mohammadsadegh Saadatzi ◽  
Mohammad Nasser Saadatzi ◽  
Riaz Ahmed ◽  
Sourav Banerjee ◽  
Vahid Tavaf
Keyword(s):  
Vibration Test ◽  
Test Bed ◽  
3 Dimensional

Finite element analysis of a vibration test bed frame

2017 ◽  
Vol 59 (2) ◽  
pp. 183-187 ◽  
Author(s):  
Dong Lei ◽  
Rui Jiang ◽  
Pengxiang Bai ◽  
Feipeng Zhu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Vibration Test ◽  
Test Bed ◽  
Element Analysis

Research on the Water-Based Hydraulic Vibration Test-Bed

2014 ◽  
Vol 1016 ◽  
pp. 204-208
Author(s):  
Qian Liu ◽  
Yuan Xun Liu ◽  
Cong Yang ◽  
Xiao Lin Li
Keyword(s):  
Test System ◽  
Vibration Test ◽  
Test Bed ◽  
Matlab Software ◽  
Water Based ◽  
Working Principle ◽  
Water Hydraulic ◽  
And Function

In this paper, the application background and function of vibration test is introduced. Besides, the composition and working principle of vibration test system is also introduced simply. Furthermore, the characteristic of water and oil is compared with each other in the paper. It is discussed if the water hydraulic is able to be used in the hydraulic vibration test-bed or not. The capability of hydraulic vibration test-bed based on water is simulated by Matlab software. The feasibility of this project is also analyzed.

Development of Numerical Dynamic Simulators for 3-D Full Scale Earthquake Testing Facility (Phase-2)

2002 ◽  
Author(s):  
Shinichiro Kajii ◽  
Chiaki Yasuda ◽  
Tosio Yamashita ◽  
Yukihito Okuda ◽  
Jun Hirai ◽  
...  
Keyword(s):  
Test System ◽  
Modeling Method ◽  
Full Scale ◽  
Test Facility ◽  
Design Stage ◽  
Vibration Test ◽  
3 Dimensional ◽  
Prototype Test ◽  
Testing Facility ◽  
System 2

The largest 3-dimensional vibration test facility is planning to build in Hyogo pref. The objectives of this facility are to investigate the process of the collapsing phenomena of a full-scale structure under the earthquake. At the design stage, it’s impossible to make sure the performance without the numerical simulation. Therefore, the mathematical simulation model was accurately constructed, and the simulation was performed. This paper describes as follows. (1) The modeling method of the 3-dimensional vibration test system. (2) The verification of the modeling method based on the measured data by using the prototype test facilities. (3) The verification results based on the condition of a collapsing phenomena of the full-scale building.

The Effects Research of Elastic Coupling on Torsional Vibration Test-Bed

2012 ◽  
Vol 229-231 ◽  
pp. 507-511
Author(s):  
Fei Wu ◽  
Huan Liu ◽  
Bing Zeng
Keyword(s):  
Torsional Vibration ◽  
Ride Comfort ◽  
Least Squares Method ◽  
Equivalent Model ◽  
Vibration Test ◽  
Vibration Characteristic ◽  
Vibration System ◽  
Test Bed ◽  
Analysis Software ◽  
Elastic Couplings

The powertrain of vehicle is actually a multi-freedom torsional vibration system, its torsional vibration directly affect the vehicle’ ride comfort and safety. In this paper, the effects of elastic couplings on the newly built torsional vibration test-bed were researched. Firstly, using the basic principle of equivalent conversion, established the torsional vibration equivalent model. Secondly, analyzed the free torsional vibration of the powertrain by the dynamics analysis software-ADAMS and obtained the torsional vibration characteristic of the powertrain with different elastic couplings. Finally，fitted out the curve of stiffness and natural frequency by the least squares method.

Study on the Order Analysis of the Vehicle Transmission Torsional Vibration

2011 ◽  
Vol 179-180 ◽  
pp. 289-293
Author(s):  
Bin Zhou ◽  
Zheng Feng Jiang ◽  
Rong Zeng
Keyword(s):  
Torsional Vibration ◽  
Working Condition ◽  
Vibration Test ◽  
Analysis Method ◽  
Test Bed ◽  
Work Process ◽  
Noise And Vibration ◽  
Safety Problem ◽  
Order Analysis

The torsional vibration is a kind of particular vibration form which exists in the work process of the vehicle’s transmission. It is easy to cause the noise and vibration of the vehicles, which will affect the riding comfort and even lead to serious safety problem. On the basis of mechanism analyzing of the torsional vibration, this paper studies on the torsional vibration of the vehicle’s transmission by order analysis method. Through the torsional vibration test under a certain working condition on test bed, the order analysis method is proved to be valid and accurate. So it can provide reference for the design of the transmission and its improvement.

Three-Dimensional Reconstruction Using Stereo Pairs from Serial Thick Sections

1977 ◽  
Vol 35 ◽  
pp. 562-563
Author(s):  
Robert Glaeser ◽  
Thomas Bauer ◽  
David Grano
Keyword(s):  
Three Dimensional ◽  
Dimensional Structure ◽  
Serial Sections ◽  
Thin Sections ◽  
3 Dimensional ◽  
Transmission Electron ◽  
Freeze Dried ◽  
Dimensional Reconstruction ◽  
Stereo Imagery ◽  
Whole Mounts

In transmission electron microscopy, the 3-dimensional structure of an object is usually obtained in one of two ways. For objects which can be included in one specimen, as for example with elements included in freeze- dried whole mounts and examined with a high voltage microscope, stereo pairs can be obtained which exhibit the 3-D structure of the element. For objects which can not be included in one specimen, the 3-D shape is obtained by reconstruction from serial sections. However, without stereo imagery, only detail which remains constant within the thickness of the section can be used in the reconstruction; consequently, the choice is between a low resolution reconstruction using a few thick sections and a better resolution reconstruction using many thin sections, generally a tedious chore. This paper describes an approach to 3-D reconstruction which uses stereo images of serial thick sections to reconstruct an object including detail which changes within the depth of an individual thick section.

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