scholarly journals Development of Non-Conservative Joints in Beam Networks for Vibration Energy Flow Analysis

2007 ◽  
Vol 14 (1) ◽  
pp. 15-28 ◽  
Author(s):  
Jee-Hun Song ◽  
Suk-Yoon Hong
Keyword(s):  
Energy Flow ◽  
Degrees Of Freedom ◽  
Vibrational Energy ◽  
Flow Analysis ◽  
Energy Flow Analysis ◽  
Internal Loss ◽  
Joint Properties ◽  
Flow Through ◽  
Coupled Structures ◽  
Coupling Angle

Our work aims to find a general solution for the vibrational energy flow through a plane network of beams on the basis of an energy flow analysis. A joint between two semi-infinite beams are modeled by three sets of springs and dashpots. Thus, the results can incorporate the case of complaint and non-conservative in all the three degrees of freedom. In the cases of finite coupled structures connected at a certain angle, the derived non-conservative joints and developed wave energy equation were applied. The joint properties, the frequency, the coupling angle, and the internal loss factor were changed to evaluate the proposed methods for predicting medium-to-high frequency vibrational energy and intensity distributions.

scholarly journals Vibrational Energy Flow Analysis of Corrected Flexural Waves in Timoshenko Beam – Part II: Application to Coupled Timoshenko Beams

2006 ◽  
Vol 13 (3) ◽  
pp. 167-196 ◽  
Author(s):  
Young-Ho Park ◽  
Suk-Yoon Hong
Keyword(s):  
Timoshenko Beam ◽  
Energy Flow ◽  
Vibrational Energy ◽  
Flow Analysis ◽  
Companion Paper ◽  
Wave Transmission ◽  
Classical Solutions ◽  
Flexural Waves ◽  
Beam Structures ◽  
Energy Flow Analysis

This paper presents the methodology for the energy flow analysis of coupled Timoshenko beam structures and various numerical applications to verify the developed methodology. To extend the application of the energy flow model for corrected flexural waves in the Timoshenko beam, which is developed in the other companion paper, to coupled structures, the wave transmission analyses of general coupled Timoshenko beam systems are performed. First, power transmission and reflection coefficients for all kinds of propagating waves in the general, coupled Timoshenko beam structures are derived by the wave transmission approach. In numerical applications, the energy flow solutions using the derived coefficients agree well with the classical solutions for various exciting frequencies, damping loss factors, and coupled Timoshenko beam structures. Additionally, the numerical results for the Timoshenko beam are compared with those for the Euler-Bernoulli beam.

Identification of Energy Dissipation in Structural Joints by Means of the Energy Flow Analysis

2017 ◽  
Vol 140 (1) ◽  
Author(s):  
S. S. Gómez ◽  
A. Metrikine ◽  
B. Carboni ◽  
W. Lacarbonara
Keyword(s):  
Experimental Data ◽  
Energy Dissipation ◽  
Energy Flow ◽  
Degrees Of Freedom ◽  
Flow Analysis ◽  
Low Frequency ◽  
Frequency Range ◽  
Energy Flow Analysis ◽  
Damping Matrix ◽  
Good Agreement

In this paper, identification of energy dissipation in the joints of a lab-scale structure is accomplished. The identification is carried out by means of an energy flow analysis and experimental data. The devised procedure enables to formulate an energy balance in the vicinity of the joints to obtain local energy dissipation. In this paper, a damping matrix based on the locally identified damping coefficients is formulated. The formulated damping matrix is later used in a five-degrees-of-freedom (5DOF) system for validation. The results obtained with the proposed method are in good agreement with the experimental data, especially in the low frequency range.

Energy flow analysis of straw-return agricultural modes in the Central Shaanxi Plain

2013 ◽  
Vol 20 (10) ◽  
pp. 1388-1393
Author(s):  
Bi JIANG ◽  
Fa-Qi WU ◽  
Xi-Hui WU ◽  
Ming LI ◽  
Xiao-Gang TONG
Keyword(s):  
Energy Flow ◽  
Flow Analysis ◽  
Energy Flow Analysis ◽  
Straw Return

Optimization-aided material and energy flow analysis for a low carbon industry

2017 ◽  
Vol 167 ◽  
pp. 1148-1154 ◽  
Author(s):  
Hendrik Lambrecht ◽  
Heidi Hottenroth ◽  
Tobias Schröer ◽  
Frank Schulenburg
Keyword(s):  
Energy Flow ◽  
Flow Analysis ◽  
Low Carbon ◽  
Energy Flow Analysis
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