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Journal ArticleDOI

Dynamic Response of a Cantilevered Beam Under Combined Moving Moment, Torque and Force

08 Jun 2020-International Journal of Structural Stability and Dynamics (World Scientific Publishing Company)-Vol. 20, Iss: 05, pp 2050065
TL;DR: In this article, the dynamic response of a cantilevered beam subjected to a moving moment and torque, and combination of them with a moving force was studied. And the moving loads were considered to traverse alon...
Abstract: This paper studies the dynamic response of a cantilevered beam subjected to a moving moment and torque, and combination of them with a moving force. The moving loads are considered to traverse alon...
Citations
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TL;DR: The empirical formulas of dynamic amplification factor (DAF) specified in current bridge codes only consider the span or fundamental frequency of reinforced concrete (RC) girders in highway as mentioned in this paper.
Abstract: The empirical formulas of dynamic amplification factor (DAF) specified in current bridge codes only consider the span or fundamental frequency of reinforced concrete (RC) girders in highway. Althou...

6 citations

Journal ArticleDOI
TL;DR: In this article , a tuned mass inerter system (TMIS) is proposed to achieve the structural target performance demand by decreasing the moving load-induced resonant responses and attached tuned mass.

2 citations

Journal ArticleDOI
TL;DR: In this paper, an analytical solution for longitudinal dynamic responses of long tunnels under arbitrary excitations is proposed for the derivation, the tunnel is assumed as a Timoshenko beam rest.
Abstract: In this paper, an analytical solution is proposed for longitudinal dynamic responses of long tunnels under arbitrary excitations. For the derivation, the tunnel is assumed as a Timoshenko beam rest...

2 citations

Journal ArticleDOI
TL;DR: In this paper , the structural modeling and dynamic analysis of the two-segment deployable beam system are carried out with considering complicated influential factors like base elasticity, complete extension, twist and 2-D translational deformations, as well as distinct structural and kinematic couplings.

1 citations

Journal ArticleDOI
TL;DR: In this article , the longitudinal vibration of rods with variable cross-sections is studied, and a new analytical method based on a recently developed method on the Riccati differential equation is utilized.
Abstract: In this study, the longitudinal vibration of rods with variable cross-sections is studied. For the analytical solution of the problem, a new analytical method based on a recently developed method on the Riccati differential equation is utilized. The governing equation is reduced to Hill’s type second-order ordinary differential equation. The transformed equations can readily be solved analytically for various cases according to the method. Seven cases have been considered, and the frequency equations for each case have been obtained. According to the method developed, the problem is solved in the simplest way. By using the present method, the reader can readily decide whether the problem is solved analytically or numerically. The present method can solve the problem of longitudinal vibration of rods having cross-sections of arbitrary shape. Finally, the method is also applied to the longitudinal vibration of stepped rods. Mode shapes are plotted for special values.

1 citations

References
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Journal ArticleDOI
TL;DR: In this paper, the authors classify the shape morphing parameters that can be affected by planform alteration (span, sweep, and chord), out-of-plane transformation (twist, dihedral/gull, and span-wise bending), and airfoil adjustment (camber and thickness).
Abstract: Aircraft wings are a compromise that allows the aircraft to fly at a range of flight conditions, but the performance at each condition is sub-optimal. The ability of a wing surface to change its geometry during flight has interested researchers and designers over the years as this reduces the design compromises required. Morphing is the short form for metamorphose; however, there is neither an exact definition nor an agreement between the researchers about the type or the extent of the geometrical changes necessary to qualify an aircraft for the title ‘shape morphing.’ Geometrical parameters that can be affected by morphing solutions can be categorized into: planform alteration (span, sweep, and chord), out-of-plane transformation (twist, dihedral/gull, and span-wise bending), and airfoil adjustment (camber and thickness). Changing the wing shape or geometry is not new. Historically, morphing solutions always led to penalties in terms of cost, complexity, or weight, although in certain circumstances, thes...

1,068 citations

Journal ArticleDOI
TL;DR: In this article, the full development and analysis of four models for the transversely vibrating uniform beam are presented, including the Euler-Bernoulli, Rayleigh, shear and Timoshenko models.

833 citations

Journal ArticleDOI
TL;DR: In this article, a train is modeled as the composition of two subsystems of wheel loads of constant intervals, with one consisting of all the front wheel assemblies and the other the rear assemblies.

359 citations

Journal ArticleDOI
M. Olsson1
TL;DR: In this article, the dynamic problem of a simple supported beam subjected to a constant force moving at a constant speed is discussed, and analytical and finite element solutions to this fundamental moving load problem are presented.

208 citations

Journal ArticleDOI
TL;DR: In this paper, a dynamic Green function approach is used to determine the response of a simply supported Bernoulli-Euler beam of finite length subject to a moving mass traversing its span.

131 citations