scholarly journals Evaluation of Damping Properties of Buildings using Non-dimensional Damping Coefficient

2014 ◽  
Vol 14 (1) ◽  
pp. 1_44-1_55
Author(s):  
Takehiro WAKITA ◽  
Eiji WAKITA
Keyword(s):  
Damping Coefficient ◽  
Damping Properties ◽  
Evaluation Of Damping

scholarly journals Evaluation of damping properties of structural glass panes under impact loading

2013 ◽  
pp. 113-120 ◽  
Author(s):  
A Ramos ◽  
F Pelayo ◽  
M Lamela ◽  
A Fernández ◽  
M Huerta ◽  
...  
Keyword(s):  
Impact Loading ◽  
Structural Glass ◽  
Damping Properties ◽  
Evaluation Of Damping

Processing for thin-filmed magnesium alloys and evaluation of damping properties

2018 ◽  
Vol 2018.26 (0) ◽  
pp. 717
Author(s):  
Hidetoshi SOMEKAWA ◽  
Kazuhiko IIDA ◽  
Masaki KOBAYASHI ◽  
Takaaki HIBARU
Keyword(s):  
Magnesium Alloys ◽  
Damping Properties ◽  
Evaluation Of Damping

Effect of Cenosphere Filler on Damping Properties of Bamboo-Epoxy Laminated Composites

2014 ◽  
Vol 23 (1) ◽  
pp. 096369351402300 ◽  
Author(s):  
Hemalata Jena ◽  
Arun Kumar Pradhan ◽  
Mihir Kumar Pandit
Keyword(s):  
Natural Frequency ◽  
Damping Ratio ◽  
Natural Fibre ◽  
Damping Properties ◽  
Weight Percentage ◽  
Number Of Layers ◽  
Fibre Composites ◽  
Particulate Filler ◽  
Set Up ◽  
Evaluation Of Damping

This paper deals with evaluation of damping properties of natural fibre composites consisting of bamboo fibre as reinforcement, epoxy as matrix and cenosphere as particulate filler. Hand lay-up technique is used to fabricate the composites with varying number of layers and different weight percentage of cenosphere filler. The prepared specimens are subjected to free vibration test (FVT) to investigate the damping ratio and natural frequency. Damping of the bamboo–epoxy composites is analysed experimentally using cantilever beam test set up by impulse technique. The investigation reveals that the number of layers and cenosphere filler content influences the natural frequency and the damping ratio.

DMA Evaluation of Damping Properties of Shape Memory Alloys

2003 ◽  
Vol 2003.1 (0) ◽  
pp. 255-256
Author(s):  
Hideki HOSODA ◽  
Masahiro TSUJI ◽  
Tomonari INAMURA ◽  
Kenji WAKASHIMA ◽  
Shuichi MIYAZAKI
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Damping Properties ◽  
Evaluation Of Damping

0206 Evaluation of Damping Properties of Composite Mount using Maxwell Model

2007 ◽  
Vol 2007.7 (0) ◽  
pp. 23-24
Author(s):  
Nobutaka TSUJIUCHI ◽  
Takayuki KOIZUMI ◽  
Takudou OHKADO ◽  
Hiroaki ANDOU
Keyword(s):  
Maxwell Model ◽  
Damping Properties ◽  
Evaluation Of Damping

Parametric Study of Damping Characteristics of Magneto-Rheological Damper: Mathematical and Experimental Approach

2020 ◽  
Vol 15 (3) ◽  
pp. 37-48
Author(s):  
Zubair Rashid Wani ◽  
Manzoor Ahmad Tantray
Keyword(s):  
Structural Control ◽  
Research Work ◽  
Testing Machine ◽  
Input Voltage ◽  
Damping Coefficient ◽  
Control Technique ◽  
Damping Force ◽  
Active Devices ◽  
Active Structural Control ◽  
Magneto Rheological

The present research work is a part of a project was a semi-active structural control technique using magneto-rheological damper has to be performed. Magneto-rheological dampers are an innovative class of semi-active devices that mesh well with the demands and constraints of seismic applications; this includes having very low power requirements and adaptability. A small stroke magneto-rheological damper was mathematically simulated and experimentally tested. The damper was subjected to periodic excitations of different amplitudes and frequencies at varying voltage. The damper was mathematically modeled using parametric Modified Bouc-Wen model of magneto-rheological damper in MATLAB/SIMULINK and the parameters of the model were set as per the prototype available. The variation of mechanical properties of magneto-rheological damper like damping coefficient and damping force with a change in amplitude, frequency and voltage were experimentally verified on INSTRON 8800 testing machine. It was observed that damping force produced by the damper depended on the frequency as well, in addition to the input voltage and amplitude of the excitation. While the damping coefficient (c) is independent of the frequency of excitation it varies with the amplitude of excitation and input voltage. The variation of the damping coefficient with amplitude and input voltage is linear and quadratic respectively. More ever the mathematical model simulated in MATLAB was in agreement with the experimental results obtained.

Formation of Standing Waves in Radial Tires

1984 ◽  
Vol 12 (1) ◽  
pp. 44-63 ◽  
Author(s):  
Y. D. Kwon ◽  
D. C. Prevorsek
Keyword(s):  
High Speed ◽  
Critical Speed ◽  
Unit Length ◽  
Standing Waves ◽  
Rolling Resistance ◽  
Damping Coefficient ◽  
Circular Membrane ◽  
Critical Speeds ◽  
Steel Cord ◽  
The Individual

Abstract Radial tires for automobiles were subjected to high speed rolling under load on a testing wheel to determine the critical speeds at which standing waves started to form. Tires of different makes had significantly different critical speeds. The damping coefficient and mass per unit length of the tire wall were measured and a correlation between these properties and the observed critical speed of standing wave formation was sought through use of a circular membrane model. As expected from the model, desirably high critical speed calls for a high damping coefficient and a low mass per unit length of the tire wall. The damping coefficient is particularly important. Surprisingly, those tire walls that were reinforced with steel cord had higher damping coefficients than did those reinforced with polymeric cord. Although the individual steel filaments are elastic, the interfilament friction is higher in the steel cords than in the polymeric cords. A steel-reinforced tire wall also has a higher density per unit length. The damping coefficient is directly related to the mechanical loss in cyclic deformation and, hence, to the rolling resistance of a tire. The study shows that, in principle, it is more difficult to design a tire that is both fuel-efficient and free from standing waves when steel cord is used than when polymeric cords are used.

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