Investigation of vibrational power flow patterns in damaged plate structures for damage localisation

2015 ◽  
pp. 129-138
Keyword(s):  
Power Flow ◽  
Flow Patterns ◽  
Plate Structures ◽  
Vibrational Power Flow

Vibrational power flow in beam-plate structures with isolation components

1998 ◽  
Vol 212 (2) ◽  
pp. 89-99 ◽  
Author(s):  
C Yi ◽  
P Dietz ◽  
X Hu
Keyword(s):  
Cross Section ◽  
Power Flow ◽  
Vibrational Energy ◽  
Constant Cross Section ◽  
Plate Structures ◽  
Tracked Vehicles ◽  
Simply Supported ◽  
Support Roller ◽  
Vibrational Power Flow ◽  
Good Agreement

This paper presents the expressions for the vibrational power flow (VPF) in beam-plate structures (BPSs) with isolation components for three different cases: case 1 is when the isolation component 1 (IC1) is added at the free end of the beam; case 2 is when the isolation component 2 (IC2) is embedded between the beam and the plate; case 3 is when IC1 is at the end of the beam, and IC2 is between the beam and the plate (IC1,2). The BPS is composed of a constant-cross-section beam and a thin flat rectangular plate with four edges simply supported. According to these expressions the corresponding numerical calculations are implemented. The influence of the parameters of the isolation components on the VPF is also considered. The calculated VPF in the structures are compared with the corresponding measured VPF. There is good agreement between them. The analytical method presented in the paper provides a tool for analysing vibrational energy transmission between the support roller and the armoured plate of a tracked vehicle. Some valuable conclusions have been applied to the vibration and noise control of tracked vehicles.

Vibrational power flow through adhesively bonded beams

1995 ◽  
Vol 97 (5) ◽  
pp. 3332-3332
Author(s):  
Qunli Wu ◽  
Yiren Hong ◽  
M. K. Lim
Keyword(s):  
Power Flow ◽  
Adhesively Bonded ◽  
Flow Through ◽  
Vibrational Power Flow

Power Flow and Sound Radiation of a Submerged Cylindrical Shell with Internal Structural

2011 ◽  
Vol 105-107 ◽  
pp. 321-325 ◽  
Author(s):  
Jin Yan ◽  
Juan Zhang
Keyword(s):  
Cylindrical Shell ◽  
Power Flow ◽  
Coupled System ◽  
Engineering Practice ◽  
Coupling Condition ◽  
Space Harmonics ◽  
In Series ◽  
Infinite Cylindrical Shell ◽  
Radiated Sound ◽  
Vibrational Power Flow

The vibrational power flow in a submerged infinite cylindrical shell with internal rings and bulkheads are studied analytically. The harmonic motion of the shell and the pressure field in the fluid is described by Flügge shell theory and Helmholtz equation, respectively. The coupling condition on the outer surface of the shell wall is introduced to obtain the vibrational equation of this coupled system. Both four kinds of forces (moments) between rings and shell and between bulkheads and shell are considered. The solution is obtained in series form by expanding the system responses in terms of the space harmonics of the spacing of both ring stiffeners and bulkheads. The vibrational power flow and radiated sound power are obtained and the influences of various complicating effects such as the ring, bulkhead and fluid loading on the results are analyzed. The analytic model is close to engineering practice, which will be valuable to the application on noise and vibration control of submarines and underwater pipes.

Vibrational power flow analysis of cracked functionally graded beams

2020 ◽  
Vol 150 ◽  
pp. 106626
Author(s):  
Lin-Feng Zhu ◽  
Liao-Liang Ke ◽  
Yang Xiang ◽  
Xin-Qun Zhu ◽  
Yue-Sheng Wang
Keyword(s):  
Power Flow ◽  
Flow Analysis ◽  
Functionally Graded ◽  
Power Flow Analysis ◽  
Vibrational Power Flow

DAMAGE DETECTION IN PLATE STRUCTURES USING MODAL POWER FLOW ANALYSIS

2010 ◽  
Author(s):  
X. Liu ◽  
W. O. Wong ◽  
L. Cheng ◽  
E. P. Tomasini
Keyword(s):  
Damage Detection ◽  
Power Flow ◽  
Flow Analysis ◽  
Plate Structures ◽  
Power Flow Analysis ◽  
Modal Power
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