scholarly journals Verification on the Application of Monitoring for Frame Structures Using the VRS-RTK Method through the Free Vibration Test

2014 ◽  
Vol 18 (1) ◽  
pp. 174-182 ◽  
Author(s):  
Se-Woon Choi ◽  
Hyo-Seon Park ◽  
Bub-Ryur Kim ◽  
Hong-Min Lee ◽  
You-Sok Kim
Keyword(s):  
Free Vibration ◽  
Frame Structures ◽  
Vibration Test ◽  
Free Vibration Test

Free Vibration Test for Damping Characteristics of Hybrid Polyester Matrix Composite with Carbon Particles

2016 ◽  
Vol 11 ◽  
pp. 1-6
Author(s):  
K. Karthik ◽  
R. Rohith Renish ◽  
I. Irfan Ahmed ◽  
T. Niruban Projoth
Keyword(s):  
Free Vibration ◽  
Hybrid Composites ◽  
Glass Fibers ◽  
Damping Ratio ◽  
Mode Shapes ◽  
Vibration Test ◽  
Engineering Structures ◽  
Carbon Filler ◽  
Damping Characteristics ◽  
Free Vibration Test

In this research aims to study the damping characteristics of hybrid polymer composite, which can be used in engineering structures and in many other applications. Hybrid composites are namely Glass fiber and carbon filler reinforced with polyester and epoxy matrix have been prepared by vacuum bag molding fabrication technique. Then the free vibration test were conducted using FFT analyzer with Lab VIEW software. The damping ratio and natural frequency were investigated for fabricated composites. Then through ANSYS, the mode shapes and natural frequencies were determined and the results were compared with experimental results. The damping ratio increases with increased volume fractions of E-glass fibers for both the types of polymer composites. Vibrations are concerned to large structures such as aircraft, as well as small structures such as electronic equipments.

10905 Free Vibration Test of Mass-micro Spring System

2014 ◽  
Vol 2014.20 (0) ◽  
pp. _10905-1_-_10905-2_
Author(s):  
Takahiro AOKI ◽  
Shin MORISHITA
Keyword(s):  
Free Vibration ◽  
Vibration Test ◽  
Spring System ◽  
Free Vibration Test

scholarly journals Estimating the flexural rigidity of Arabidopsis inflorescence stems: Free-vibration test vs. three-point bending test

2020 ◽  
Vol 37 (4) ◽  
pp. 471-474
Author(s):  
Miyuki T. Nakata ◽  
Mao Nakao ◽  
Asuka Denda ◽  
Yusuke Onoda ◽  
Haruko Ueda ◽  
...  
Keyword(s):  
Free Vibration ◽  
Flexural Rigidity ◽  
Bending Test ◽  
Vibration Test ◽  
Three Point Bending ◽  
Inflorescence Stems ◽  
Free Vibration Test

Dynamic Analysis of Steel-Concrete Composite Frames with Partial Interaction

2012 ◽  
Vol 594-597 ◽  
pp. 904-907 ◽  
Author(s):  
Jun Xia ◽  
Z. Shen ◽  
Bin Chen
Keyword(s):  
Boundary Condition ◽  
Free Vibration ◽  
Dynamic Analysis ◽  
Free Vibration Analysis ◽  
Slip Boundary Condition ◽  
Composite Beams ◽  
Free Vibrations ◽  
Frame Structures ◽  
Shear Connection ◽  
Slip Boundary

The finite element formulations of steel-concrete composite (SCC) beams considering interlayer slip with end shear restraint were established. Free vibrations of SCC beams and frame structures under different slip boundary conditions were examined. The influences of the shear connection stiffness and the slip boundary condition on dynamic characteristics were analyzed. It is shown that the low order 8-DOF element may exhibit slip locking phenomenon in free vibration analysis for very stiff connection. The free vibration frequencies of composite beams and frame structures increase with the shear connection stiffness increasing. Besides, it is found that the natural vibration properties of SCC frame structures are significantly affected by the slip boundary condition, and it should be suitably imposed on all composite beams in dynamic analysis.

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