Finite element modelling of an innovative passive energy dissipation device for seismic hazard mitigation

Titirla, Magdalini; Papadopoulos, Pantelis M.; Doudoumis, Ioannis

doi:10.1016/j.engstruct.2018.04.081

Cited by 21 publications

(23 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…FE modeling using ABAQUS has been widely used to simulate the behavior of damping devices and predict damper forces (Titirla et al 2018;Qiu et al 2020;Mehrabi et al 2017). The hysteretic responses achieved from the three-dimensional (3D) FE analysis of metallic dampers under quasi-static cyclic loading were seen to be in agreement with the experimental results for steel based dampers such as comb teeth dampers (Montazeri et al 2021), two-stage energy-dissipation device (Fan et al 2016), oval-shaped dampers (Najari Varzaneh andHosseini 2019), steel memory alloy (SMA) steel dampers (Qiu et al 2020), annular yield metal damper (Chen et al 2019), and crawler steel dampers (Deng et al 2013).…”

Section: Finite-element Modelingmentioning

confidence: 99%

Nonlinear Finite-Element Modeling of HF2V Lead Extrusion Damping Devices: Generic Design Tool

2022

View full text Add to dashboard Cite

Supplemental energy-dissipation devices are increasingly used to protect structures, limiting loads transferred to structures and absorbing significant response energy without sacrificial structural damage. The displacement of the bulged shaft plastically deforms lead in the high force to volume (HF2V) device, dissipating significant energy. HF2V devices are currently designed using limited precision models, so there is variability in force prediction. Further, although the outcome force is predicted, the knowledge of the exact internal mechanisms resulting in these device forces is lacking, limiting insight and predictive accuracy in device design. This study develops a generic finiteelement (FEM) model using commercially available software to better understand force generation and aid in precision device design, thus speeding up the overall design and implementation process for uptake and use. The model is applied to 17 experimental HF2V devices of various sizes. The highly nonlinear analysis is run using the software with automatic increments to balance higher accuracy and computational time. The total force output is sum of the friction forces between lead and steel and the contact pressure forces acting between moving shaft and displaced lead. FEM forces and plots of the 17 devices are compared with experimental device forces and test plots. The errors from force comparison for all 17 devices range from −8% (overprediction) to þ39% (underprediction) with a mean absolute error of 7.6% and a signed average error of 4.7%, indicating most errors were small. In particular, the standard error (SE) in manufacturing is SE ¼ AE14%. Overall, 13 of 17 devices (76%) are within AE1 SE of 14%; 3 of 17 devices (18%) are within AE2 SE (AE28%), and the last has −39% error, which is within AE3 SE ¼ AE42%. These results show low errors and a distribution of errors compared with experimental results that are within experimental device construction variability. The overall modeling methodology is objective and repeatable, and thus generalizable. The results validate the overall approach with relatively very low error, providing a general modeling methodology for accurate design of HF2V devices.

show abstract

Section: Finite-element Modelingmentioning

confidence: 99%

Nonlinear Finite-Element Modeling of HF2V Lead Extrusion Damping Devices: Generic Design Tool

2022

View full text Add to dashboard Cite

show abstract

“…The FE method is a widely employed approach to develop numerical prediction models in construction industry and more and more researchers are used it [7][8][9]. By performing numerical simulations, experimental acoustical tests can be reduced, and parametric studies can also be carried out to investigate the influence of specific geometrical changes in construction as well as the influence of the variations/uncertainties in material properties, which always have a mark able influence on the results [10][11][12].…”

Section: Validation Of Fem For Floor Panels In Static Analysismentioning

confidence: 99%

Dynamic and Vibroacoustic Response of Timber Floor Panels. Measurements and Non-Linear Numerical Simulations

Titirla¹,

Benakli²,

Larbi³

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

View full text Add to dashboard Cite

The present work concerns the dynamic and vibroacoustic response of timber floor panels as well as the study of the effect of material nonlinearities and damping. Each panel is composed of glued laminated beams and wood constituting the floor. The dimensions of the panels are defined to ensure appropriate implementation and transport conditions. For these reasons, the width of the panels is fixed at 2.40 m, and the length is 7.2 m. Two types of floor panels were investigated with and without struts. A numerical approach based on 3D finite element method is used to solve the problem. Our finite element model and the mechanical properties of the used materials are first validated from comparisons with experimental tests carried out in statics [1]. A dynamic non-linear analysis of the timber floor panels has been then conducted under a walking time history and the vibroacoustic response of the system is finally investigated.

show abstract

“…The objective is to slow the motion of buildings "by braking rather than breaking" [19]. After that, many researchers proposed friction dampers that focus on protection in the braced frames or in the joint connection [20][21][22][23][24][25][26][27]. Several of these devices have been selected for the seismic strengthening of existing or new buildings in the USA, Canada, and Japan [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Strengthening Solutions with Optimized Passive Energy Dissipation Systems in Symmetric Buildings

Mrad¹,

Titirla

Larbi

2021

Applied Sciences

Self Cite

View full text Add to dashboard Cite

The aim of this study is to compare the seismic response of reinforced concrete (RC) symmetric buildings, with a varied number of stories, strengthening with three types of passive energy dissipation systems, as tuned mass dampers, viscous dampers, and friction dampers. The paper presents an overview of design optimization with the object of minimizing certain functions: (i) the maximum displacement at the top of the structures, (ii) the base shear loads, and (iii) the maximum interstory drift. The objective functions were evaluated in three residents’ buildings (a four-story building, a nine-story building, and a sixteen-story building) subjected to seven (real and artificial) seismic recorded accelerograms. For this purpose, 94 nonlinear dynamic analyses were carried out. The effects of each strengthening solution are presented, and from this innovative comparison (optimal design, three different passive energy systems, three different story numbers), further useful results were observed. The outcomes of the study show the effectiveness of a tuned mass damper (TMD) system, and how it might be better for tall and flexible structures than for stiffer structures. However, the response of the pendulum tuned mass damper (TMD) configuration is better than the conventional one because it acts in all directions. The viscous dampers (VDs) provide a significant reduction for mid-rise buildings, while friction dampers (FDs) boost the performance of all structures under seismic action, especially in terms of displacement, and they are more suitable for low-rise buildings.

show abstract

Finite element modelling of an innovative passive energy dissipation device for seismic hazard mitigation

Cited by 21 publications

References 25 publications

Nonlinear Finite-Element Modeling of HF2V Lead Extrusion Damping Devices: Generic Design Tool

Nonlinear Finite-Element Modeling of HF2V Lead Extrusion Damping Devices: Generic Design Tool

Dynamic and Vibroacoustic Response of Timber Floor Panels. Measurements and Non-Linear Numerical Simulations

Comparison of Strengthening Solutions with Optimized Passive Energy Dissipation Systems in Symmetric Buildings

Contact Info

Product

Resources

About