Static and Dynamic Analysis of Steel U-Damper for Space Structures

Satria, Eka; Son, Lovely; Haris, Sabril; Saputri, Rahma

doi:10.18517/ijaseit.8.1.4161

Cited by 6 publications

(4 citation statements)

References 12 publications

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“…Second, friction forces between the sliding plate and deformable plate are neglected, and third, the residual stresses are also neglected in the numerical simulation. The computational program has been used to analyse many structures under various study cases [23]- [25]. The results have been verified very well by theoretical calculation as well as experiments.…”

Section: Stage 3: Development Of Computational Program Based On Finite Element Analysismentioning

confidence: 74%

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Finite Element Analysis to Determine Stiffness, Strength, and Energy Dissipation of U-Shaped Steel Damper under Quasi-Static Loading

Satria

Son

Bur

et al. 2021

IJAME

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In seismic areas, the application of structural dampers becomes compulsory in the design of buildings. There are various types of dampers, such as viscous elastic dampers, viscous fluid dampers, friction dampers, tune mass dampers, yielding/ metallic dampers, and magnetic dampers. All damper systems are designed to protect structural integrities, control damages, prevent injuries by absorbing earthquake energy, and reduce deformation. This paper is a part of research investigating the behaviour of the U-shaped steel damper (as one type of metallic damper) that can be applied to the buildings in seismic areas. The dampers are used as connections between the roof and supporting structure, with the two general purposes. The first is to control the displacement of roof under an earthquake, and the second is to absorb seismic energy through the plasticity of some parts in dampers. If a strong earthquake occurs, the plasticity will absorb the seismic energy; therefore, heavy damage could be avoided from the roof’s mainframes. In this paper, several models of U-shaped steel dampers are introduced. Several parameters, such as elastic stiffness, maximum strength, and energy dissipation, are determined under two conditions. Firstly, static analysis of the proposed damper under variation of U-steel plate configurations, searching the model with more significant energy dissipation. Secondly, static analysis of the unsymmetrical and symmetrical damper under different loading directions. An in-house finite element program that involves both geometrical and material nonlinearities is developed as a problem solver. A quasi-static lateral loading is given to each model until one cycle of the hysteresis curve is reached (in the displacement range between -20 mm to +20 mm). The above parameters are calculated from the hysteresis curve. From the results, the behaviour of the U-steel damper can be described as follows. Firstly, increasing the energy dissipation in the lateral direction can be done by increasing the lateral stiffness of the damper. However, it can reduce the maximum elastic deformation of the damper. Secondly, under the random direction of loading, a symmetrical shape can increase the energy dissipation of the damper.

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Section: Stage 3: Development Of Computational Program Based On Finite Element Analysismentioning

confidence: 74%

“…The proposed damper is placed between roof structures and building base structures. An initial study was conducted to investigate the mechanical characteristic of the damper to reduce the displacement [23]. Through this study, the stiffness and energy dissipation of the damper under cyclic loading were calculated numerically.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis to Determine Stiffness, Strength, and Energy Dissipation of U-Shaped Steel Damper under Quasi-Static Loading

Satria

Son

Bur

et al. 2021

IJAME

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“…The static analysis is performed using in-house finite element software. In this step, the landing gear stiffness and maximum elastic force are calculated based on the force and displacement curve obtained from the output of the finite element program [21,22]. The static analysis is conducted by varying the landing gear dimension, such as height (H), radius (R), width (W), and length (L) as shown in Figure . 1.…”

Section: Methodsmentioning

confidence: 99%

The Effect of Landing Gear Dimension Variation on the Static Strength and Dynamic Response of Unmanned Aerial Vehicle (UAV)

Son,

M. Rusli,

S.P. Putra

et al. 2023

Int. J. Automot. Mech. Eng.

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This research discusses the static and dynamic analysis of the landing gear structure of an unmanned aerial vehicle (UAV). The dimensional study is conducted to investigate the effect of landing gear dimension variation on UAVs’ static strength and dynamic response. Static analysis was performed with Finite Element Method (FEM) software. The dynamic response of the UAV is analyzed using a single-degree-of-freedom vibration model. Based on the static analysis results, the landing gear stiffness and strength can be increased by increasing the width and decreasing the height, radius, and length of the landing gear structure. The energy dissipation in the dynamic analysis is described by hysteresis and viscous damping model. The dynamic response simulation results show that the increase in the stiffness of the landing gear leads to an increase in force transmission and acceleration of the UAV. Furthermore, the UAV response using the viscous damping model can accurately predict the system’s response with the hysteretic damping model for small damping conditions. However, the deviation was observed for large damping conditions.

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“…Several techniques have been proposed by many researchers to increase the structural stiffness and damping. Satria, et al [3] uses friction damper elements to increase the structural stiffness and damping. Saloma et al propose a technique for structural strengthening using bracing system [4].…”

Section: Introductionmentioning

confidence: 99%

Vibration Response Suppression of Space Structure using Two U-Shaped Water Container

Son

Bur

Satria

2018

Int. J. Adv. Sci. Eng. Inf. Technol.

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Nowadays, a passive vibration control technique using dynamic vibration absorbers (DVA) has drawn many researchers' attention in the structural dynamic field. The reason is that this technique is simple and it can work effectively in reducing the vibration response when its parameters are optimally designed. The DVA fundamental concept is the addition of a new vibration system to the primary system. This new system addition causes reduction of the vibration response of the primary system during excited by a dynamic load. One simple technique to realize the DVA for structural application is by using water vibration. This research is aimed to develop one type of dynamic vibration absorber using the water vibration system in a U-shaped container for a two-story building structure model. Besides being used as the dynamic absorber, this U-shaped container is also functioned as the water storage tank in the building. Regarding reduce the first bending mode response of the structure in x-z and y-z plane, two Ushaped water storage tanks are placed on the upper floor of the building. The dimensions of the water storage tanks are designed so that the natural frequency of moving water in the tank is the same as the natural frequency of the first bending mode of the structure in x-z and y-z plane. The performance of dynamic absorber is evaluated by applying the impulsive and seismic loads on the building. The simulation results show that the U-shaped water storage tank placed on the upper floor of the building can reduce the response amplitude of the structure under impulsive loads. Meanwhile, for the seismic load case, the performance of dynamic absorber is clearly seen when the excitation frequency is close to the natural frequency of the building structure.

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Static and Dynamic Analysis of Steel U-Damper for Space Structures

Cited by 6 publications

References 12 publications

Finite Element Analysis to Determine Stiffness, Strength, and Energy Dissipation of U-Shaped Steel Damper under Quasi-Static Loading

Finite Element Analysis to Determine Stiffness, Strength, and Energy Dissipation of U-Shaped Steel Damper under Quasi-Static Loading

The Effect of Landing Gear Dimension Variation on the Static Strength and Dynamic Response of Unmanned Aerial Vehicle (UAV)

Vibration Response Suppression of Space Structure using Two U-Shaped Water Container

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