Study on the exactness of alternative indirect force estimation methods, power dissipation calculation by power or energy flow, and transfer path analysis for structure-borne sound

2016 ◽  
Vol 140 (4) ◽  
pp. 3002-3002
Author(s):  
Akira Inoue ◽  
Yosuke Tanabe
Keyword(s):  
Path Analysis ◽  
Power Dissipation ◽  
Energy Flow ◽  
Estimation Methods ◽  
Force Estimation ◽  
Transfer Path ◽  
Transfer Path Analysis

scholarly journals Research on Sensitive Measuring Points for Vibration Fault of NC Turret Based on Energy Flow and Transfer Path

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Fei Chen ◽  
DeCong Zhang ◽  
Wei Luo ◽  
Binbin Xu
Keyword(s):  
Finite Element ◽  
Path Analysis ◽  
Energy Flow ◽  
Flow Simulation ◽  
Flow Theory ◽  
Analysis Method ◽  
Transfer Path ◽  
Transfer Path Analysis ◽  
Test Points ◽  
Vector Images

Some equipment fault measurement points are difficult to determine. Thus, this study proposes a method using energy flow and transfer path to select sensitive measurement points. Firstly, based on the energy flow theory of the shell, the energy flow is taken as the physical quantity to describe the energy transfer of the structure vibration, and the energy-based transfer path analysis method is established. Secondly, the simulation model of the finite element energy flow was established by focusing on the NC turret, and the vector image of the energy flow transfer path of the NC turret shell was created. For the relationship between the vector images of the experimental and simulation energy flows, the validity of the finite element energy flow simulation results is verified. Lastly, three abnormal areas of the NC turret shell are identified by comparing and analyzing the energy flow vector images of the NC turret in the healthy and fault states, taking the poor meshing fault of the grooves as an example. By choosing nine test points in the abnormal areas and calculating the distribution rate of the transfer paths between the test points to the joint surfaces of the fluted disc, the energy flow distribution rate of the different fault positions to the test points is obtained. Calculation results enabled us to identify three measuring points that can accurately distinguish the fault location for a typical fault mode. This research combined energy flow theory and transfer path analysis method to determine the vibration fault sensitive measuring points of NC equipment. The proposed method is practical in the field of fault diagnosis and has broad application prospects.

Vibration Transfer Path Analysis of Double-Layer Box for Marine Reducer

2021 ◽  
Author(s):  
Miaomiao Li ◽  
Qinwen Liu ◽  
Guanghao Dai ◽  
Weifang Chen ◽  
Rupeng Zhu
Keyword(s):  
Path Analysis ◽  
Double Layer ◽  
Transfer Path ◽  
Transfer Path Analysis

scholarly journals Identification of relevant acoustic transfer paths for WT drivetrains with an operational transfer path analysis

2021 ◽  
Author(s):  
W. Schünemann ◽  
R. Schelenz ◽  
G. Jacobs ◽  
W. Vocaet
Keyword(s):  
Path Analysis ◽  
Wind Turbine ◽  
Frequency Response ◽  
Mechanical System ◽  
Reference Point ◽  
Response Functions ◽  
Frequency Response Functions ◽  
Transfer Path ◽  
Transfer Path Analysis ◽  
Turbine Model

AbstractThe aim of a transfer path analysis (TPA) is to view the transmission of vibrations in a mechanical system from the point of excitation over interface points to a reference point. For that matter, the Frequency Response Functions (FRF) of a system or the Transmissibility Matrix is determined and examined in conjunction with the interface forces at the transfer path. This paper will cover the application of an operational TPA for a wind turbine model. In doing so the path contribution of relevant transfer paths are made visible and can be optimized individually.

scholarly journals Using transfer path analysis to assess the influence of bearings on structural vibrations of a wind turbine gearbox

Wind Energy ◽  
2014 ◽  
Vol 18 (5) ◽  
pp. 797-810 ◽  
Author(s):  
F. Vanhollebeke ◽  
J. Peeters ◽  
D. Vandepitte ◽  
W. Desmet
Keyword(s):  
Path Analysis ◽  
Wind Turbine ◽  
Structural Vibrations ◽  
Wind Turbine Gearbox ◽  
Transfer Path ◽  
Transfer Path Analysis

N & amp;V Integration and Optimization of Driveline Using Transfer Path Analysis

2012 ◽  
Author(s):  
Per-Olof Sturesson ◽  
Christer Svensson ◽  
Jan Weckner ◽  
Rikard Karlsson ◽  
Peter Söhr
Keyword(s):  
Path Analysis ◽  
Transfer Path ◽  
Transfer Path Analysis
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