An adaptive algorithm in time domain for dynamic analysis of a simply supported beam subjected to a moving vehicle

2011 ◽  
Vol 34 (8) ◽  
pp. 996-1005 ◽  
Author(s):  
Hating Li ◽  
Haitian Yang ◽  
Nan Li
Keyword(s):  
Dynamic Analysis ◽  
Time Domain ◽  
Adaptive Algorithm ◽  
Simply Supported Beam ◽  
Moving Vehicle ◽  
Simply Supported

Dynamic analysis of a simply supported beam with LaSMP patches

2019 ◽  
Vol 230 (6) ◽  
pp. 2031-2042 ◽  
Author(s):  
Yunze Yang ◽  
Jihai Yuan ◽  
Mu Fan
Keyword(s):  
Dynamic Analysis ◽  
Simply Supported Beam ◽  
Simply Supported

scholarly journals RELATION BETWEEN STATIONARY AND MOVING PEDESTRIAN LOAD MODELS

2018 ◽  
Vol 15 ◽  
pp. 114-119
Author(s):  
Jan Štěpánek ◽  
Jiří Máca
Keyword(s):  
Dynamic Analysis ◽  
Parametric Study ◽  
Simply Supported Beam ◽  
Simply Supported ◽  
Load Models

The dynamic analysis of footbridges became common in recent years, but the approach to modelling pedestrian induced load is still inconsistent. This paper compares two different ways of modelling single pedestrian load. The response of the structure to stationary pulsating force is compared to the results given by the same force moving along simply supported beam. 300 randomly generated beams were used in this parametric study to describe the relation among these two approaches and parameters of the structure. The proposed formula was successfully applied to get more realistic estimation of response of the structure to a single walking pedestrian using stationary pulsating force.

Dynamic Responses of a Simply Supported Bridge to Moving Vehicle Loads

2011 ◽  
Vol 117-119 ◽  
pp. 231-235 ◽  
Author(s):  
Jeng Hsiang Lin
Keyword(s):  
Time Domain ◽  
Analytical Approach ◽  
Dynamic Responses ◽  
Integral Approach ◽  
Convolution Integral ◽  
Moving Vehicle ◽  
Simply Supported ◽  
Vehicle Loads ◽  
Axle Loads ◽  
Good Agreement

The estimation of dynamic responses of a bridge under vehicle loads moving along the bridge is frequently a problem of great interest for bridge engineers. Presented herein is an analytical approach to estimate the dynamic responses of a simply supported Euler-Bernoulli bridge under a set of vehicle axle loads moving along the bridge at constant speed. The approach involves convolution of the vehicle axle loads with modal responses of the bridge. The convolution integral is solved in time domain by a numerical integral approach. The solution was verified and good agreement was found.

Damage Identification of Simply Supported Beam Bridge Based on Time Series Analysis

2012 ◽  
Vol 236-237 ◽  
pp. 617-621
Author(s):  
Han Bing Liu ◽  
Yan Jun Song ◽  
Guo Jin Tan ◽  
Yan Yi Sun
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
Dynamic Response ◽  
Time Domain ◽  
Damage Identification ◽  
Simply Supported Beam ◽  
Simply Supported ◽  
Series Analysis ◽  
Wide Range ◽  
Beam Bridge

Presently, the study on damage identification of bridges is very popular and it has a wide range of applications. Also the related theory and technology are constantly developing and mature. The researches based on the dynamic response of bridge in frequency domain is more, but the dynamics theory is complex and difficult for the engineering personnel to grasp. On the opposite, although the damage identification method based on the dynamic response of bridge in time domain is easy to understand, it is difficulty for applications. The Auto Regressive Moving Average model (ARMA) of time series analysis can be used to settle this problem. It is a not very abstruse theory and it is already apply for the system identification of some Structures. In this paper, we use time series analysis for the damage identification of simply supported beam bridge combined with its own dynamic response in time domain.

scholarly journals Time and Frequency Domain Dynamic Analysis of Offshore Mooring

2021 ◽  
Vol 9 (7) ◽  
pp. 781
Author(s):  
Shi He ◽  
Aijun Wang
Keyword(s):  
Dynamic Analysis ◽  
Frequency Domain ◽  
Time Domain ◽  
Linearization Method ◽  
Euler Method ◽  
Single Component ◽  
Hydrodynamic Drag ◽  
Lumped Mass ◽  
Mooring Lines ◽  
The Time Domain

The numerical procedures for dynamic analysis of mooring lines in the time domain and frequency domain were developed in this work. The lumped mass method was used to model the mooring lines. In the time domain dynamic analysis, the modified Euler method was used to solve the motion equation of mooring lines. The dynamic analyses of mooring lines under horizontal, vertical, and combined harmonic excitations were carried out. The cases of single-component and multicomponent mooring lines under these excitations were studied, respectively. The case considering the seabed contact was also included. The program was validated by comparing with the results from commercial software, Orcaflex. For the frequency domain dynamic analysis, an improved frame invariant stochastic linearization method was applied to the nonlinear hydrodynamic drag term. The cases of single-component and multicomponent mooring lines were studied. The comparison of results shows that frequency domain results agree well with nonlinear time domain results.

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