A precast beam-column joint using an innovative friction damper as a connector: Experimental and numerical study

Structures ◽  
2022 ◽  
Vol 35 ◽  
pp. 968-989
Author(s):  
Ai Qi ◽  
Xuhong Liu ◽  
Rongjian Xu ◽  
Xueyuan Yan
Keyword(s):  
Numerical Study ◽  
Friction Damper ◽  
Column Joint

Experimental and numerical study of mortise-tenon joints reinforced with innovative friction damper

2021 ◽  
Vol 230 ◽  
pp. 111701
Author(s):  
Jianyang Xue ◽  
Chenwei Wu ◽  
Xicheng Zhang ◽  
Zhendong Qi
Keyword(s):  
Numerical Study ◽  
Friction Damper

Numerical Study of Joint Behaviour for Robustness Assessment

2012 ◽  
Vol 166-169 ◽  
pp. 3114-3117
Author(s):  
Marian A. Gizejowski ◽  
Leslaw Kwasniewski ◽  
Bashir Saleh ◽  
Marcin Balcerzak
Keyword(s):  
Numerical Modelling ◽  
Numerical Study ◽  
Nonlinear Effects ◽  
Large Displacements ◽  
Highly Nonlinear ◽  
Modelling Techniques ◽  
Column Joint ◽  
Joint Behaviour ◽  
Structural Imperfections ◽  
Robustness Assessment

The paper presents studies on numerical modelling of beam-to-column joint behaviour in typical service and exceptional design situations. The complexity of such investigations arises from highly nonlinear effects associated with the prediction of joint performance, such as structural imperfections, large displacements and rotations, inelastic properties of steel and concrete, bonding effects between steel and concrete, and slip between concrete and structural steel, among others. The paper addresses these problems and provides validation of numerical modelling techniques trough comparison with experimental data for joints under hogging and sagging moments.

scholarly journals On the assessment of a tunable auxiliary mass damper with a friction damper in its suspension: numerical study

2016 ◽  
Vol 83 ◽  
pp. 01005 ◽  
Author(s):  
E.L.C. Guerineau ◽  
H.T. Coelho ◽  
F.P. Lepore Neto ◽  
M.B. Santos ◽  
J. Mahfoud
Keyword(s):  
Numerical Study ◽  
Friction Damper ◽  
Mass Damper ◽  
Auxiliary Mass

NUMERICAL STUDY OF BLAST-RESISTANT SANDWICH PANELS WITH ROTATIONAL FRICTION DAMPERS

2013 ◽  
Vol 13 (06) ◽  
pp. 1350014 ◽  
Author(s):  
WENSU CHEN ◽  
HONG HAO
Keyword(s):  
Energy Absorption ◽  
Sandwich Panel ◽  
Numerical Study ◽  
Blast Resistance ◽  
Sandwich Panels ◽  
Blast Loading ◽  
Blast Loads ◽  
Friction Damper ◽  
Energy Absorber ◽  
Blast Energy

Blast-resistant structures are traditionally designed with solid materials of huge weight to resist blast loads. This not only increases the construction costs, but also undermines the operational performance. To overcome these problems, many researchers develop new designs with either new materials or new structural forms, or both to resist the blast loads. Friction damper, as a passive energy absorber, has been used in earthquake-resistant design to absorb vibration energy from cyclic loading. The use of friction damper in blast-resistant design to absorb high-rate impact and blast energy, however, has not been well explored. This study introduces a new sandwich panel equipped with rotational friction hinge device with spring (RFHDS) between the outer and inner plates to resist the blast loading. This device RFHDS, as a special sandwich core and energy absorber, consists of rotational friction hinge device (RFHD) and spring. The RFHD is used to absorb blast energy while the spring is used to restore the original shape of the panel. This paper studies the mechanism of RFHD by using theoretical derivation and numerical simulations to derive its equivalent force–displacement relation and study its energy absorption capacity. In addition, the energy absorption and blast loading resistance capacities of the sandwich panel equipped with RFHDS are numerically investigated by using Ls-Dyna. It is found that the proposed sandwich panel can recover, at least partially its original configuration after the loading and thus maintain its operational and blast-resistance capability after a blasting event. In order to maximize the performance of the proposed sandwich panel, parametric calculations are carried out to study the performance of RFHDS and the sandwich panels with RFHDS. The best performing sandwich panel with RFHDS in resisting blast loadings is identified. This sandwich panel configuration might be employed to mitigate blast loading effects in structural sandwich panel design.

Numerical study of the low-frequency atomic dynamics in a Lennard-Jones glass

1998 ◽  
Vol 77 (2) ◽  
pp. 473-484 ◽  
Author(s):  
M. Sampoli, P. Benassi, R. Dell'Anna,
Keyword(s):  
Numerical Study ◽  
Low Frequency ◽  
Lennard Jones

Experimental and numerical study of the response of steel sheet Hopkinson specimens

2006 ◽  
Vol 134 ◽  
pp. 541-546 ◽  
Author(s):  
P. Verleysen ◽  
J. Degrieck
Keyword(s):  
Steel Sheet ◽  
Numerical Study

Numerical simulation of the tree higro-thermal response in forest fire environment

2020 ◽  
pp. 57-65
Author(s):  
Eusébio Conceiçã ◽  
João Gomes ◽  
Maria Manuela Lúcio ◽  
Jorge Raposo ◽  
Domingos Xavier Viegas ◽  
...  
Keyword(s):  
Forest Fire ◽  
Numerical Study ◽  
Thermal Response ◽  
View Factor ◽  
Tree Model ◽  
Pine Tree ◽  
Surface Temperatures ◽  
Fire Environment ◽  
Fire Front ◽  
Heat Exchanges

This paper refers to a numerical study of the hypo-thermal behaviour of a pine tree in a forest fire environment. The pine tree thermal response numerical model is based on energy balance integral equations for the tree elements and mass balance integral equation for the water in the tree. The simulation performed considers the heat conduction through the tree elements, heat exchanges by convection between the external tree surfaces and the environment, heat exchanges by radiation between the flame and the external tree surfaces and water heat loss by evaporation from the tree to the environment. The virtual three-dimensional tree model has a height of 7.5 m and is constituted by 8863 cylindrical elements representative of its trunks, branches and leaves. The fire front has 10 m long and a 2 m high. The study was conducted taking into account that the pine tree is located 5, 10 or 15 m from the fire front. For these three analyzed distances, the numerical results obtained regarding to the distribution of the view factors, mean radiant temperature and surface temperatures of the pine tree are presented. As main conclusion, it can be stated that the values of the view factor, MRT and surface temperatures of the pine tree decrease with increasing distance from the pine tree in front of fire.

Sign in / Sign up

Export Citation Format

Share Document