Performance of Type D and Type LD steel plate walls

2010 ◽  
Vol 37 (1) ◽  
pp. 88-98 ◽  
Author(s):  
Anjan K. Bhowmick ◽  
Gilbert Y. Grondin ◽  
Robert G. Driver
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Steel Plate ◽  
Element Model ◽  
Strain Rate Effects ◽  
Type D ◽  
Moment Resisting ◽  
Seismic Records ◽  
Seismic Regions ◽  
Moderate Seismic Regions

A finite element model is developed to study the behaviour of unstiffened steel plate walls. The model includes both material and geometric nonlinearities and strain rate effects. The model is first validated using the results from quasistatic and dynamic experimental programs. The validated finite element model is then used to study the performance of four storey and eight storey steel plate walls with moment-resisting beam-to-column connections under spectrum compatible seismic records for Vancouver and Montreal. Two different steel plate wall types defined in the current Canadian standard CAN/CSA-S16–01 are considered, namely, Type D (ductile) and Type LD (limited-ductility) plate walls. All the Type D walls, designed according to the capacity design provisions, exhibit better inelastic seismic responses than the Type LD plate walls. The analyses of eight storey steel plate walls show that in high seismic regions, such as Vancouver, medium- to high-rise Type LD plate walls may exhibit yielding in columns in intermediate floors. The study also shows that in more moderate seismic regions, like Montreal, Type LD plate walls behave in a stable and ductile manner and can be used for low- to medium-rise buildings.

Rotational behavior and modeling of bolted glulam beam-to-column connections with slotted-in steel plate

2020 ◽  
Vol 23 (9) ◽  
pp. 1989-2000
Author(s):  
Xiaoluan Sun ◽  
Yiheng Qu ◽  
Weiqing Liu ◽  
Weidong Lu ◽  
Shenglin Yuan
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Numerical Method ◽  
Steel Plate ◽  
Element Model ◽  
Constitutive Law ◽  
Rotational Behavior ◽  
Rotational Stiffness ◽  
Glulam Beam ◽  
Bolt Diameter

In this article, the rotational behavior of typical bolted glulam beam-to-column connections with slotted-in steel plate was studied in the numerical method. In order to describe the complicated behavior of wood more closely, an elastic–plastic damage constitutive law combining the Hill yielding criterion and a modified Hashin failure criterion was embedded in the commercial ABAQUS software in the form of a VUMAT subroutine. Subsequently, a three-dimensional finite element model based on the constitutive law proposed was established, with the failure mode and moment–rotation curve compared to some similar experiments. Based on this finite element model, a parametric study concentrating on the influence of the width of the beam, bolt diameter, and assembly clearance was carried out. It was found that the numerical method using the proposed constitutive law showed a good capacity to study the rotational behavior of the connections. Besides, the initial rotational stiffness increased with the increase in beam width and bolt diameter, and the assembly clearances between bolts and bolt holes would affect the initial rotational stiffness while the assembly clearance between beam and column affected little.

Nonlinear Finite Element Analysis of FRP-Strengthened Reinforced Concrete Panels Under Blast Loads

2016 ◽  
Vol 13 (04) ◽  
pp. 1641002 ◽  
Author(s):  
Xiaoshan Lin ◽  
Y. X. Zhang
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Model ◽  
Blast Resistance ◽  
Blast Loading ◽  
Element Model ◽  
Element Analysis ◽  
Strain Rate Effects ◽  
Concrete Panels ◽  
Tension And Compression

A finite element model is developed in this paper for numerical modeling of the structural responses of FRP-strengthened reinforced concrete panels under blast loading. Strain rate effects for concrete in tension and compression, steel reinforcements and FRP sheets are taken into account in the finite element model. The commercial explicit hydrocode LS-DYNA is employed to carry out the numerical analysis. The proposed finite element model is validated by comparing the computed results of a conventional reinforced concrete panel and FRP-strengthened reinforced concrete panels under blast loading with the test data from the literature. In addition, the effects of FRP thickness, retrofitted surface, standoff distance and the charge mass on the blast resistance of FRP-strengthened reinforced concrete panels are investigated in this paper.

scholarly journals Seismic Behavior of a Novel Buckling-Restrained Steel Plate Shear Wall

2021 ◽  
Vol 2021 ◽  
pp. 1-21 ◽  
Author(s):  
Yang Li ◽  
Xiaofeng Zhao ◽  
Ping Tan ◽  
Fulin Zhou ◽  
Jin Jiang
Keyword(s):  
Finite Element ◽  
Energy Dissipation ◽  
Finite Element Model ◽  
Steel Plate ◽  
Element Model ◽  
Shear Wall ◽  
Concrete Slabs ◽  
Test Results ◽  
Steel Plate Shear Wall ◽  
Hysteretic Characteristics

In this study, in a novel buckling-restrained steel plate shear wall (BRSPSW) with out-of-plane deformation spaces, angle steel stiffeners have been installed so as to create gaps between the steel plate and the covering concrete slabs. A finite element model has been developed to analyse the effect of the gap. According to the finite element results, seismic performance of this novel BRSPSW has been tested under cyclic loading at the scale ratio of 1/3. The failure pattern, hysteretic characteristics, skeleton curve, equivalent stiffness, ductility, and energy dissipation have all been systematically analysed. A stiffened steel plate shear wall (SPSW) has also been tested in order to determine the differences between these two steel shear walls in load-carrying capability and the function and significance of the gap. The test results show that the novel BRSPSW does not only significantly enhance the ultimate bearing capacity, stiffness, ductility, and accumulated energy dissipation of the SPSW but also keep the steel plate basically intact at the end of the test. This can be attributed to the existence of the gaps between the infilled steel plate and the covering concrete slabs. The hysteretic characteristics and the strength and deformation characteristics of this novel BRSPSW have been simulated by using the finite element model, and the test results are in good agreement with the finite element results. Hence, the BRSPSW is an excellent steel plate shear wall to be used in high rise structure to resist horizontal loadings.

scholarly journals Flexural Strengthening of Reinforced Concrete Beams with Mechanically Bonded Steel Plates

2021 ◽  
Author(s):  
Syed Ali Kashif
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Model ◽  
Steel Plate ◽  
Great Influence ◽  
Element Model ◽  
Composite Beams ◽  
Design Guidelines ◽  
Reinforced Concrete Beams ◽  
Design Procedures

Steel plate bonding technology is widely accepted for the strengthening of reinforced concrete structures. Researches in the past showed that epoxy bonded steel plated composite beams are highly prone to variation in temperature and environmental conditions. This research study introduces a novel approach to steel plate composite beam in which bond between the concrete and the steel plate is provided by welding the steel plate to the legs of the uniformly spaced stirrups. Experimental investigation showed that the parameters such as interface connections, geometric dimensions, stirrups spacing and thickness of steel plate have a great influence on the strength, deformation and failure characteristics of such composite beams. A finite element model has been developed using commercial software, ABAQUS, to predict the strength of such composite beams and its performance is validated through experimental results. The direct finite element simulation of proposed composite beams with developed finite element model gives an average of experimental to predicted strength ratio of 0.99, which comfirms the accuracy of prediction. The finite element model is then used to simulate a large number of numerical beams with varying geometric and material properties to formulate design guidelines. Design charts are developed and their performance is validated through test results with experimental to design chart predictions giving an average value of 0.94. Design procedures for such beams are illustrated with calculated design examples. Such simple design procedures can be adopted in the actual design of proposed composite beams in practical applications.

Finite element model updating of a semi-rigid moment resisting structure

2011 ◽  
Vol 18 (2) ◽  
pp. 149-168 ◽  
Author(s):  
Alireza T. Savadkoohi ◽  
Marco Molinari ◽  
Oreste S. Bursi ◽  
Michael I. Friswell
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Model Updating ◽  
Element Model ◽  
Finite Element Model Updating ◽  
Moment Resisting

Residual stress and simulation of 304–430 stainless steel dissimilar laser-welded joints incorporating materials heterogeneity

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Xilong Zhao ◽  
Feng He ◽  
Kun Wang
Keyword(s):  
Residual Stress ◽  
Finite Element ◽  
Stainless Steel ◽  
Laser Welding ◽  
Finite Element Model ◽  
Welded Joints ◽  
Steel Plate ◽  
Element Model ◽  
Stainless Steel Plate ◽  
Welding Temperature

Abstract An Nd:YAG laser device is used to conduct laser welding for a 1 mm austenitic stainless steel plate and a ferritic stainless steel plate. A finite element model of the shear punching test is constructed to generate the maximum shear strength in the weld, and the finite element model of laser welding is created using the welding temperature field. The hole drilling test result and the residual stress generated by two algorithms (Nonuniform-material and uniform-material) are compared. Results show that a drop-off of residual stress in the central area of the welded joint is observed when materials heterogeneity is disregarded. When materials heterogeneity is considered, the residual stress curve indicates smooth transition. The value of the latter appears reasonably similar to the experimental value. Therefore, this solution is advantageous in terms of residual stress simulation in dissimilar welded joints and does not critically affect residual deformation.

Experimental Study and Finite Element Simulation of Bending Fretting Fatigue for Tempered 42CrMo Steel

2016 ◽  
Vol 725 ◽  
pp. 394-398
Author(s):  
Jun Ding ◽  
Yi Lin Zhu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Steel Plate ◽  
Element Model ◽  
Fretting Fatigue ◽  
Cyclic Softening ◽  
Bending Fatigue ◽  
Cyclic Bending ◽  
42Crmo Steel ◽  
Bending Loads

In this paper, experiments of the plain bending fatigue for cyclic softening material tempered 42CrMo steel plate and the bending fretting fatigue for tempered 42CrMo steel plate against 52100 bearing steel cylinder are conducted. The difference of the bending fretting fatigue and the plain bending fatigue for tempered 42CrMo steel is analyzed, and the effect of cyclic bending loads with the same normal load on the fatigue lives is discussed. Besides, finite element simulations of the bending fretting fatigue process for tempered 42CrMo steel by ABAQUS are carried out. In this simulation, an advanced cyclic elasto-plastic constitutive model is implemented in to ABAQUS as a user material subroutine (UMAT) in order to consider the influence of ratchetting and cyclic softening feature. And a simplified equivalent two-dimensional plane strain finite element model with an equivalent normal force obtained from the three-dimensional finite element model is adopted. From the numerical simulation, the influence of cyclic bending loads on the bending fretting fatigue for tempered 42CrMo steel is discussed, and then the bending fretting fatigue lives are estimated by employing Smith–Watson–Topper critical plane criteria. Comparison with the corresponding experiments shows that the estimated results are in good agreement with the experimental results.

scholarly journals Flexural Strengthening of Reinforced Concrete Beams with Mechanically Bonded Steel Plates

2021 ◽  
Author(s):  
Syed Ali Kashif
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Model ◽  
Steel Plate ◽  
Great Influence ◽  
Element Model ◽  
Composite Beams ◽  
Design Guidelines ◽  
Reinforced Concrete Beams ◽  
Design Procedures

Steel plate bonding technology is widely accepted for the strengthening of reinforced concrete structures. Researches in the past showed that epoxy bonded steel plated composite beams are highly prone to variation in temperature and environmental conditions. This research study introduces a novel approach to steel plate composite beam in which bond between the concrete and the steel plate is provided by welding the steel plate to the legs of the uniformly spaced stirrups. Experimental investigation showed that the parameters such as interface connections, geometric dimensions, stirrups spacing and thickness of steel plate have a great influence on the strength, deformation and failure characteristics of such composite beams. A finite element model has been developed using commercial software, ABAQUS, to predict the strength of such composite beams and its performance is validated through experimental results. The direct finite element simulation of proposed composite beams with developed finite element model gives an average of experimental to predicted strength ratio of 0.99, which comfirms the accuracy of prediction. The finite element model is then used to simulate a large number of numerical beams with varying geometric and material properties to formulate design guidelines. Design charts are developed and their performance is validated through test results with experimental to design chart predictions giving an average value of 0.94. Design procedures for such beams are illustrated with calculated design examples. Such simple design procedures can be adopted in the actual design of proposed composite beams in practical applications.

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