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

Effect of Osteoporosis on Natural Frequencies in Mouse Femur: Vibration Test and Micro-CT Based Finite Element Analysis

2006 ◽  
Vol 326-328 ◽  
pp. 851-854 ◽  
Author(s):  
Yoon Hyuk Kim ◽  
Chang Hwan Byun ◽  
Taek Yul Oh
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mesh Generation ◽  
Natural Frequencies ◽  
Treated Group ◽  
Vibration Test ◽  
Micro Ct ◽  
Element Analysis ◽  
Generation Algorithm ◽  
The Finite Element Analysis

In this study, the change of the natural frequencies in mouse femurs with osteoporosis was investigated based on a vibration test and a finite element. Three groups of the femurs include the osteoporotic group, the treated group and the normal group. In the vibration test, the natural frequencies were measured by the mobility test. For the finite element analysis, the micro finite element model of the femur was reconstructed using the Micro-CT images and the Voxel mesh generation algorithm. From the results, the averaged natural frequencies in the osteoporotic group were the highest, followed by those in the treated group. The finite element models were validated within 15% errors by comparing the natural frequencies in the finite element analysis with those in the vibration test. The developed Micro-CT system, the Voxel mesh generation algorithm, the presented finite element analysis, and vibration test could be useful for the investigation of the structural change of the bone tissue, and the diagnosis and the treatment in the osteoporosis.

Design of Multifunctional Electric Wheel Test-Bed

2013 ◽  
Vol 437 ◽  
pp. 439-443
Author(s):  
Liang Shao ◽  
Lu Xiong
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Functional Requirements ◽  
Test Bed ◽  
Durability Test ◽  
Element Analysis ◽  
Slip Ratio ◽  
Tire Force ◽  
Design Specifications ◽  
And Control

This paper introduces a multifunctional electric wheel test-bed which focuses on vehicle dynamics (especially for testing the relation between tire force and slip ratio with large cornering force) and durability test of the electric wheel. On the basis of the functional requirements we propose some design specifications, with which mechanical structure and control system design as well as finite element analysis of the test-bed are conducted. The finite element analysis results show that the stress of the whole mechanism especially the critical parts is less than the yield stress limit with enough tolerance, suggesting that the test-bed meets the design specifications.

Accelerated Test Techniques

2000 ◽  
Vol 43 (2) ◽  
pp. 21-25 ◽  
Author(s):  
Mike Raymond
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Test Methods ◽  
Vibration Test ◽  
Accelerated Test ◽  
Element Analysis ◽  
Individual Test ◽  
Pneumatic Impact ◽  
Considerable Debate ◽  
Series Of Experiments

Currently there is considerable debate over the relevance and adequacy of emerging vibration test methodologies. This paper details a controlled series of experiments designed to evaluate the nature and consistency of failures produced from several test methodologies including single-axis step stress, skewed-fixture step stress, pneumatic impact, and finite element analysis. Details regarding the test article, individual test methods, and a summary of conclusions are presented.

Energy finite‐element analysis of the NASA aluminum test‐bed cylinder

2006 ◽  
Vol 119 (5) ◽  
pp. 3389-3389 ◽  
Author(s):  
Aimin Wang ◽  
Nickolas Vlahopoulos ◽  
Ralph Buehrle ◽  
Jacob Klos
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Test Bed ◽  
Element Analysis ◽  
Energy Finite Element Analysis

Dynamic Modal Analysis of CNC Precision Rotary Worktable

2011 ◽  
Vol 179-180 ◽  
pp. 787-792
Author(s):  
Qiang Cheng ◽  
Dong Sheng Xuan ◽  
Zhi Feng Liu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dynamic Performance ◽  
Great Influence ◽  
Numerical Control ◽  
Vibration Test ◽  
Element Analysis ◽  
Machining Quality ◽  
Domestic Machine ◽  
Simulation Parameters

The dynamic performance of the worktable has a great influence on machining quality. In order to improve the machining precision, the paper conducts the analysis and research on the workability of a numerical control engine bed rotary worktable from a domestic machine tool factory，and discusses the influence of dynamic characteristics of rotary worktable on the precision of numerical control processing. Firstly Ansys finite element analysis was employed to analyze and simulate the modality and natural frequency of the numerical control rotary worktable under various steps. And then, a vibration test on the numerical control rotary worktable to confirm accuracy of the simulation parameters was carried on. Finally a contrast was made between the theoretical analysis and the experimental analysis to point out the resonance frequency and the distortion of the rotary worktable. Also the influence of numerical control rotary worktable on the numerical control processing was discussed.

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