The use of finite element techniques for calculating the dynamic response of structures to moving loads

Wu, Jia‐Jang; Whittaker, A.R.; Cartmell, M.P.

doi:10.1016/s0045-7949(00)00055-9

Cited by 91 publications

(41 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Each moving force is distributed to the adjacent nodes according to the beam element shape functions [41]. The forces on the bridge due to the crowd at any point in time are taken as the superposition of the individual pedestrian forces.…”

Section: Finite Element Modellingmentioning

confidence: 99%

Enhancement factors for the vertical response of footbridges subjected to stochastic crowd loading

Caprani¹,

Keogh²,

Archbold

et al. 2012

Computers & Structures

View full text Add to dashboard Cite

The vertical acceleration response of a hypothetical footbridge is predicted for a sample of single pedestrians and a crowd of pedestrians using a probabilistic approach. This approach uses statistical distributions to account for the fact that pedestrian parameters are not identical for all pedestrians. Enhancement factors are proposed for predicting the response due to a crowd based on the predicted accelerations of a single pedestrian. The significant contribution of this work is the generation of response curves identifying enhancement factors for a range of crowd densities and synchronization levels.

show abstract

Section: Finite Element Modellingmentioning

confidence: 99%

Enhancement factors for the vertical response of footbridges subjected to stochastic crowd loading

Caprani¹,

Keogh²,

Archbold

et al. 2012

Computers & Structures

View full text Add to dashboard Cite

show abstract

“…In the case of moving load, there are two models frequently used in the literature (Wu et al, 2000;Esen, 2013): the moving force model and the moving mass model. In the former model, the force is assumed to be constant and equal to the weight of the moving body,…”

Section: Fe Model For Structurementioning

confidence: 99%

Time-Domain Three Dimensional BE-FE Method for Transient Response of Floating Structures Under Unsteady Loads

Ismail

2016

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

This paper presents a direct time-domain three dimensional (3D) numerical procedure to simulate the transient response of very large floating structures (VLFS) subjected to unsteady external loads as well as moving mass. The proposed procedure employs the Boundary Element and Finite Element methods (FEM-BEM).The floating structure and the surrounding fluid are discretized by 4-node isoparametric finite elements (FE) and by 4-node constant boundary elements (BE), respectively. Structural analysis is based on Mindlin's plate theory. The equation of motion is constructed taking into account the effect of inertia loading due to the moving mass. In order to obtain the hydrodynamic forces (added mass and radiation damping), the coupled natural frequencies are first obtained by an iterative method, since hydrodynamic forces become frequency-dependent. Then the Newark integration method is employed to solve the equation of motion for structural system. In order to prove the validity of the present method, a FORTRAN program is developed and numerical examples are carried out to compare its results with those of published experimental results of a scale model of VLFS under a weight drop and airplane landing and takeoff in still water condition. The comparisons show very good agreement.

show abstract

“…2) The vehicle is modeled as a moving mass (Law and Zhu, 2004) or a moving constant load (Wu et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Simulink based simulation of the behavior of a ribbon pontoon bridge

Zhang¹,

Guo-ping

Zhou³

et al. 2010

J. Marine. Sci. Appl.

View full text Add to dashboard Cite

A mathematical model of a ribbon pontoon bridge subjected to moving loads was formulated using the theory of simply supported beams. Two types of moving load models were used, the first a moving-constant-force model and the second a moving-mass model. Using both types of loads, the dynamic behavior of a ribbon pontoon bridge was simulated while subjected to a single moving load and then multiple moving loads. Modeling was done with the Simulink package in MATLAB software. Results indicated that the model is correct. The two types of moving load models made little difference to the response ranges when loads moved on the bridge, but made some difference to the response phases. When loads left, the amplitude of the dynamic responses induced by the moving-constant-force model load were larger than those induced by the moving-mass model. There was a great deal more difference when there were more loads.

show abstract

The use of finite element techniques for calculating the dynamic response of structures to moving loads

Cited by 91 publications

References 14 publications

Enhancement factors for the vertical response of footbridges subjected to stochastic crowd loading

Enhancement factors for the vertical response of footbridges subjected to stochastic crowd loading

Time-Domain Three Dimensional BE-FE Method for Transient Response of Floating Structures Under Unsteady Loads

Simulink based simulation of the behavior of a ribbon pontoon bridge

Contact Info

Product

Resources

About