Dynamic Test and Analysis of the Structure of the Stadium Stand in Suzhou Industrial Park

The test object is the grandstand of the Suzhou Industrial Park Stadium. First, the structure was tested for dynamic characteristics, including natural frequency, mode test, and damping test. Then, the structure was subjected to a human-induced vibration response test. Lastly, the finite-element modeling of the structure was carried out, and the simulated and measured values were compared. The test results of the dynamic characteristics of the structure are consistent with the calculated values, and the finite-element modeling of the structure was accurate and reasonable. The natural frequency of structural modal test areas 1 and 2 met the 3 Hz limit vibration specified by JGJ/T 441-2019, and the second-order resonance frequency was still within the range of pedestrian load frequency, which may still cause comfort problems. Test results show that the presence of people increases the damping effect of the structure.

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137 Finite element modeling of the rotor system with open crack : Experimental verification of both natural frequency and response curve

The Proceedings of the Dynamics & Design Conference ◽

10.1299/jsmedmc.2009._137-1_ ◽

2009 ◽

Vol 2009 (0) ◽

pp. _137-1_-_137-6_

Author(s):

Tsuyoshi INOUE ◽

Nobuhiro NAGATA ◽

Yukio ISHIDA

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Natural Frequency ◽

Experimental Verification ◽

Response Curve ◽

Rotor System ◽

Open Crack ◽

Element Modeling

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The Tip/Tilp Mirror Modal Analysis Based on Flexible Connection of Equivalent Spring

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.697.226 ◽

2014 ◽

Vol 697 ◽

pp. 226-229

Author(s):

Cai Ling Wang ◽

Hong Wei Wang

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Modal Analysis ◽

Detection System ◽

Mirror System ◽

Test Results ◽

Element Analysis ◽

Element Modeling ◽

The Finite Element Analysis ◽

Resonance Detection

According to flexible connectivity of space stabilization system,This paper proposes the finite element analysis method using multiple equivalent spring connecting unit to replace the original flexible connections. And the elastic coefficient’s correspondence between the equivalent spring and the original spring were deduced. Using the equivalent spring method, the tip/tilt mirror system for finite element modeling is completed, After completion of the modal analysis, first-order resonant frequency is calculated. At last, the tip/tilt mirror system is tested in non-contact laser resonance detection system, And test results and modal analysis results were compared, and results show that the finite element modeling method of using equivalent spring connecting is effective. Provide constructive reference for subsequent tip/tilt mirror design, has a very important reference for similar projects.

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Strength Analysis of a Micro-Rocket Combustion Chamber

MRS Proceedings ◽

10.1557/proc-687-b4.6 ◽

2001 ◽

Vol 687 ◽

Cited By ~ 1

Author(s):

Erin E. Noonan ◽

Christopher S. Protz ◽

Yoav P. Peles ◽

S. Mark

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Combustion Chamber ◽

Mechanical Test ◽

Current Status ◽

Strength Analysis ◽

Test Results ◽

Element Modeling

AbstractThis paper presents the fabrication, testing and analysis of the MIT micro-rocket combustion chamber structure. The structure is a rocket chamber with a closed throat and pressure feeds. It is fabricated with the same processes as the full micro-rocket builds. Mechanical test results are correlated with inspection of failed devices for flaws and with finite element modeling of the test condition. This analysis provides recommendations for modifications to improve the strength of the micro-rocket chamber. These recommendations are discussed in the context of the current status of the micro-rocket.

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Analytical and Finite Element Modeling of the Dynamic Characteristics of a Linear Feeding Stage with Different Arrangements of Rolling Guides

Mathematical Problems in Engineering ◽

10.1155/2014/454156 ◽

2014 ◽

Vol 2014 ◽

pp. 1-11 ◽

Cited By ~ 2

Author(s):

Jyh-Cheng Chang ◽

Jui-Pin Hung

Keyword(s):

Mathematical Model ◽

Finite Element ◽

Finite Element Model ◽

Finite Element Modeling ◽

Dynamic Characteristics ◽

Element Model ◽

Linear Guide ◽

Element Modeling ◽

Positioning Stage ◽

The Finite Element Model

This study was aimed at investigating the dynamic behaviors of the linear driven feeding stage by means of the analytical and finite element modeling approaches. To assess the dynamic characteristics of the stages with different linear guide arrangements, the finite element model of the stages was created, in which the linear components with rolling interface were accurately modeled based on the Hertzian theory. On the other hand, the analytically mathematical model was derived to determine how the linear guide arrangement affects the dynamic characteristics of the stage. Results of the modal analysis show that the vibration behaviors of the positioning stage are dominated by the rigidity of the linear components and the platform. In addition, comparisons of the results from the two approaches further indicate that the platform rigidity is an important factor determining the accuracy of the prediction of the vibration frequencies by the analytically mathematical model. As a conclusion of the study, the analytically mathematical model can approximate well to the finite element model when the linear stage is designed with appropriate structure rigidity.

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Research on Side Detector by the Finite Element Modeling

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.945-949.21 ◽

2014 ◽

Vol 945-949 ◽

pp. 21-24

Author(s):

Xiu Hua Zhao ◽

Chun Ling Meng ◽

Yang Li ◽

Tao Liang

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Modeling And Simulation ◽

Product Design ◽

Test Results ◽

Validity And Reliability ◽

Element Modeling ◽

Model Combining ◽

Side Detector

It has prove to be the essential means to improve the efficiency, shorten the cycle and reduce costs of development by finite element modeling and simulation on side detector.Finite element modeling was studied for the design of profile detector on the basis of theoretical analysis.Verify the validity and reliability of the model combining with the test results,thereby providing the basis for further optimization of product design.

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