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

2021 ◽  
Vol 18 (3) ◽  
pp. 9042-9050
Author(s):  
E. Satria ◽  
L. Son ◽  
M. Bur ◽  
M. Dzul Akbar
Keyword(s):  
Finite Element ◽  
Energy Dissipation ◽  
Static Analysis ◽  
Seismic Energy ◽  
Elastic Stiffness ◽  
Hysteresis Curve ◽  
Problem Solver ◽  
Element Analysis ◽  
Lateral Direction ◽  
Steel Damper

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.

With Different Axial Compression, the Finite Element Analysis of Concrete Frame Column that Reinforced by Assemble Inclined Web Steel Truss

2014 ◽  
Vol 1079-1080 ◽  
pp. 177-182
Author(s):  
Shao Wu Zhang ◽  
Ying Chuan Chen ◽  
Geng Biao Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Simulation Analysis ◽  
Hysteresis Curve ◽  
Element Analysis ◽  
Concrete Frame ◽  
The Finite Element Analysis ◽  
Steel Truss

In order to study the performance of concrete frame columns that reinforcedby assembleinclined web steel truss, with the same reciprocatinghorizontal displacement and different axialcompression.It canbe calculate the mechanical behavior of concrete frame columns and reinforced columns by using the finite element analysis software ABAQUS. Simulation analysis shows that the bearing capacity ofreinforced columnshas greatly increased andpresented a full hysteresis curve. The result shows that the reinforcement method of assemble inclined web steel truss can greatly improve the bearing capacity and ductility of the concrete frame column, and the axial compression is larger, the better the reinforcement effect.

Finite Element Analysis of Metallic Structure of Unconventional Dedicated Tower Crane

2012 ◽  
Vol 184-185 ◽  
pp. 218-221
Author(s):  
Si Cong Yuan ◽  
Jing Qiang Shang ◽  
Dong Hong Wang ◽  
Dong Dong Wei ◽  
Chang Xiao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Static Analysis ◽  
Working Conditions ◽  
Metallic Structure ◽  
Element Analysis ◽  
Tower Crane ◽  
Computer Aided

For the high hoisting height, wide using range, tower crane is widely utilized in the architecture construction, while there are some deficiencies in the high rising architecture such as chimney, so the performance can’t exerted. By virtue of computer aided technology, the finite element static analysis of metallic structure of unconventional dedicated tower crane is conducted in this paper, and the figures of stress and displacement are achieved for the two working conditions and two structures. It is proved that the results are satisfied the requirements of stiffness and strength, and also foundation is established for the further analysis.

scholarly journals An Investigation Into the Design of Hollow Accumulator Rolls Using Finite Element Analysis

2000 ◽  
Author(s):  
Anthony V. Viviano ◽  
Daniel H. Suchora ◽  
Hazel M. Pierson
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Static Analysis ◽  
Design Theory ◽  
Design Methodology ◽  
Uniform Pressure ◽  
Roll Design ◽  
Element Analysis ◽  
Roll Body ◽  
Present Design

Abstract Accumulator systems consist of a series of accumulator rolls, arranged either vertically or horizontally, used in many sheet processing lines for the purpose of storing up strip. Literature on roll design for this particular type of roll is scarce. Much of the present design theory is based on a static analysis assuming the entire contact load from the strip is uniformly distributed over the roll. A previous paper done on this subject focused on modeling the roll using finite element analysis (FEA) assuming this uniform pressure load on the roll. The purpose of this work was to incorporate non-linear contact elements between the strip and the roll body in a finite element analysis. This would allow the software to distribute the load from the strip to the roll, taking into account friction and contact losses. Once accomplished, this load was placed on various roll design configurations, of which included variation in the number of roll stiffeners and the thickness of the roll body and the end plates. These results were also compared to the previous uniform pressure FEA in order to assess the validity of the uniform pressure assumption. Based on these results, a roll design methodology is presented.

The Finite Element Analysis on the Crossbeam of Full Automatic Hydraulic Tile Press

2012 ◽  
Vol 605-607 ◽  
pp. 397-400
Author(s):  
Dong Qing Lv
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Static Analysis ◽  
Mechanical Engineering ◽  
Element Analysis ◽  
The Finite Element Analysis

Completed the finite element static analysis on the crossbeam of a certain type of automatic hydraulic tile press and discussed stress and transfiguration of the crossbeam. The result can provide reference for design, and the discussion will be useful for mechanical engineering.

Shape Optimization Study of Mild Steel Slit Dampers

2010 ◽  
Vol 168-170 ◽  
pp. 2434-2438 ◽  
Author(s):  
Yan Hong Xu ◽  
Ai Qun Li ◽  
Xing De Zhou ◽  
Peng Sun
Keyword(s):  
Finite Element ◽  
Mild Steel ◽  
Cross Section ◽  
Design Method ◽  
Elastic Stiffness ◽  
Displacement Curve ◽  
Element Analysis ◽  
Optimization Study ◽  
Maximal Stress ◽  
Yield Displacement

This paper presented a new mild steel slit damper(SSD). The new shape was parabolic according to all the cross section having the same maximal stress, and the elastic stiffness and yield displacement formula were derived. Finite element analysis showed that the parabolic shaped damper had a more reasonable load - displacement curve compared with the previously proposed shape. The theoretical stiffness and yield displacement were consistent with the results by finite element method (FEM), and that indicated the presented design method was simple and feasible.

Finite Element Analysis of Automobile Leaf Spring Bassed on Pro/E

2013 ◽  
Vol 753-755 ◽  
pp. 1250-1253
Author(s):  
Na Wu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Static Analysis ◽  
Solid Modeling ◽  
Leaf Spring ◽  
Assembly Process ◽  
Analysis Method ◽  
Element Analysis ◽  
Brick Element

Nunmerical analysis method was used to analyze multi-chip tapered leaf spring with the same area under vertical loads, in which the brick element of twenty nodes was used to model the spring leaves and the solid modeling using in ansys was modeled in 3D softwar. Each piece of nodes were coupled in order to simulate the leaf spring assembly process. The results of six modes analysis and static analysis could be the research basis for the further study of leaf spring.

Experimental and Numerical Studies on the Joint of Special-Shaped Concrete-Filled Rectangular Composite Tubular Column with H-Shaped Beam

2013 ◽  
Vol 671-674 ◽  
pp. 417-423
Author(s):  
Ji Xiong Liu ◽  
Shao Bin Dai ◽  
Yao Peng ◽  
Jun Huang
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Plate Thickness ◽  
Great Influence ◽  
High Strength ◽  
Hysteresis Curve ◽  
Element Analysis ◽  
Shaped Beam ◽  
End Plate ◽  
High Strength Bolt

3 extended-end-plate joints of T-shaped concrete-filled rectangular composite tubular column with H-shaped beam were designed. The experimental research and ANSYS nonlinear finite element analysis on the earthquake resistance behaviors of the joints were conducted under low cyclic loading. The results indicate that the shapes of hysteresis curve of each specimen is full and presents spindle, all the specimens possess good energy dissipation capacity. The end-plate thickness and high-strength bolt diameter have a great influence on the bearing capacity of the joints. Increasing the thickness of end-plate and the diameter of high-strength bolt, the displacement ductility factors of the joints decrease slightly, but their ultimate bearing capacities obviously enhance. The stress distributions and the finite element failure characteristics of the joints are basically consistent with the test phenomena, yield bearing capacity and ultimate bearing capacity of the finite element calculations can agree well with the experimental results.

Effect of Width-to-Thickness Ratio on Large Deformation in Shear Panel Hysteresis Damper Using Low Yield Point Steel

2013 ◽  
Vol 446-447 ◽  
pp. 1460-1465 ◽  
Author(s):  
Daniel Y. Abebe ◽  
Jae Hyouk Choi ◽  
Si Jeong Jeong
Keyword(s):  
Energy Dissipation ◽  
Large Deformation ◽  
Yield Point ◽  
Seismic Energy ◽  
Thickness Ratio ◽  
Hysteretic Behavior ◽  
Engineering Structures ◽  
Element Analysis ◽  
Energy Dissipating Device ◽  
Shear Panel

Recently, building and other civil engineering structures are built with energy dissipating device in order to reduce the damages caused by earthquake. There are a number of seismic energy dissipating device and steel dampers are among many energy dissipation device which is widely used because they are easy for construction, maintenance and low cost. Shear panel damper (SPD) is a type steel damper that dissipates energy by metallic deformation or using hysteresis of material as a source of energy dissipation. Low yield point steel is a good material to be used as a hysteresis damper since it has excellent ductility performance. Nonlinear finite element analysis was carried out to predict the large deformation and hysteretic behavior of SPD using low yield point steel (SLY120) for different width-to-thickness ratio. In order to verify the analysis simulation, quasi-static loading was also conducted and from the comparison a satisfactory result was found.

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