A probabilistic approach to the dynamic analysis of ducts subjected to multibase harmonic and random excitation

1990 ◽  
Author(s):  
AMIT DEBCHAUDHURY ◽  
K. RAJAGOPAL ◽  
H. HO ◽  
J. NEWELL
Keyword(s):  
Dynamic Analysis ◽  
Probabilistic Approach ◽  
Random Excitation

scholarly journals Dynamic response of reinforced concrete building from the effects of rail transport

2014 ◽  
Vol 9 (1) ◽  
pp. 69-78
Author(s):  
Ivo Demjan ◽  
Michal Tomko
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Response ◽  
Dynamic Analysis ◽  
3D Model ◽  
Spectral Response ◽  
Random Excitation ◽  
Rail Transport ◽  
Reinforced Concrete Building ◽  
Load Spectra ◽  
Concrete Building

Abstract A 3D model of a reinforced concrete building and was created in software ANSYS. The dynamic analysis was focused on the spectral response of the object represented by a random excitation experiment found in records in the form of load spectra

A Review on Dynamic Analysis of Rail Vehicle Coach

2018 ◽  
Vol 10 (3) ◽  
Author(s):  
S. Palli ◽  
R. Koona ◽  
S.K. Sharma ◽  
R.C. Sharma
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Behaviour ◽  
Ride Comfort ◽  
Probabilistic Approach ◽  
Design Parameters ◽  
Railway Vehicle ◽  
Transient Dynamic Analysis ◽  
Car Body ◽  
Power Spectral ◽  
Forced Vibration Analysis

Railway vehicle is one of the rigorously developing passenger and goods carrier in the past few centuries. Dynamic behaviour of the railway coach is a vital aspect in its design and also in terms of passenger safety and ride comfort. Dynamic response includes both deterministic and probabilistic analyses. Modal, harmonic and transient dynamic analysis is part of deterministic analyses, whereas random response using spectrum methods and power spectral density (PSD) is a probabilistic approach. This paper is an attempt to cover various modelling and simulation methods of the railway bogie and coach adopted by various researchers to understand the dynamic behaviour of the railway coach. Further, the research findings of various dynamic parameters obtained theoretically and practically against different inputs like sinusoidal and random inputs to the car body have been discussed. This forms a basis in understanding the development of railway coach design when one is interested in carrying out free and forced vibration analysis on the coach, as well as assists to optimize various design parameters of components like bogie, car body and suspension elements in terms of vehicle dynamics.

Dynamic Analysis of a Composite Structure under Random Excitation Based on the Spectral Element Method

2019 ◽  
Vol 20 (2) ◽  
pp. 179-190
Author(s):  
M. R. Machado ◽  
L. Khalij ◽  
A. T. Fabro
Keyword(s):  
Boundary Condition ◽  
Dynamic Analysis ◽  
Composite Structure ◽  
Spectral Element Method ◽  
Weight Ratio ◽  
Spectral Element ◽  
Random Excitation ◽  
Structural Dynamic ◽  
High Level ◽  
Element Method

AbstractThe application of the composite materials in the aeronautical and aerospace industries has been increasing over the last several decades. Compared to conventional metallic materials, they present better strength to weight and stiffness to weight ratio. However, they can also present a high level of uncertainty, mainly associated with the manufacturing processes. Besides the uncertainty in the composite material parameters, which can play a role in the structural dynamic response, randomness can also be associated with boundary condition and external excitation sources. This paper treats the dynamic analysis of a composite beam under random excitation and uncertainties in the boundary condition. The beam is modelled by the spectral element method, a wave propagation technique. Some numerical examples are used to study the influence of random source on the dynamic behaviour of the composite structure.

Dynamic analysis of Carbon NanoTubes conveying fluid with uncertain parameters and random excitation

2018 ◽  
Vol 26 (10) ◽  
pp. 898-913 ◽  
Author(s):  
Abdellhadi Azrar ◽  
Mohamed Ben Said ◽  
Lahcen Azrar ◽  
Abdulmalik A. Aljinaidi
Keyword(s):  
Carbon Nanotubes ◽  
Dynamic Analysis ◽  
Random Excitation ◽  
Uncertain Parameters ◽  
Conveying Fluid
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