Numerical study of a blind bolted connection between an aluminum bridge deck and steel girders

2021 ◽  
Author(s):  
Soufiane el Ogri ◽  
Charles-Darwin Annan ◽  
Pampa Dey
Keyword(s):  
Numerical Simulation ◽  
Numerical Model ◽  
Contact Zone ◽  
Contact Area ◽  
Bridge Deck ◽  
Numerical Study ◽  
Highway Bridge ◽  
Steel Girders ◽  
Bolted Connection ◽  
Extensive Numerical Simulation

<p>This article concerns the behaviour of two blind bolt types, Ajax One side and Blind Oversize Mechanically (BOM), used to connect a multi-void aluminum bridge deck on its supporting steel girders. An extensive numerical simulation by FEM was performed to evaluate the connection behaviour against the Canadian Highway Bridge Design standard CSA S6-19. The main objective was to examine the assembly against fretting and quantify its impact at the contact zone over several load cycles. A special numerical model was developed for the prediction of fretting, and validated with analytical results and other observations reported in the literature. The model was used to analyze the fretting for each bolt at the surface of contact between the bolt head and the aluminum plate. Results of the study revealed that the blind bolts will lead to a few micrometers of wear, while for the standard bolt, a probable crack developments associated with minor wear may occur at the contact area.</p>

Combined Experimental and Numerical Study for Multiple Microchannel Heat Transfer System

2010 ◽  
Author(s):  
Jingru Zhang ◽  
Yogesh Jaluria ◽  
Tiantian Zhang ◽  
Li Jia
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Steady State ◽  
Numerical Model ◽  
Initial Conditions ◽  
Numerical Study ◽  
Numerical Models ◽  
Three Dimensional ◽  
Variation Versus ◽  
Heat Transfer System

Multiple microchannel heat sinks for potential use for electronic chip cooling are studied experimentally and numerically to characterize their thermal performance. The numerical simulation is driven by experimental data, which are obtained concurrently, to obtain realistic, accurate and validated numerical models. The ultimate goal is to design and optimize thermal systems. The experimental setup was established and liquid flow in the multiple microchannels was studied under different flow rates and heat influx. The temperature variation versus time was recorded by thermocouples, from which the time needed to reach steady state was determined. Temperature variations under steady state conditions were compared with three-dimensional steady state numerical simulation for the same boundary and initial conditions. The experimental data served as input parameters for the validation of the numerical model. In case of discrepancy, the numerical model was improved. A fairly good agreement between the experimental and simulation results was obtained. The numerical model also served to provide input that could be employed to improve and modify the experimental arrangement.

scholarly journals Numerical study on hydrodynamic load of real-world tsunami wave at highway bridge deck using a coupled modeling system

2019 ◽  
Vol 192 ◽  
pp. 106486 ◽  
Author(s):  
K. Qu ◽  
W.Y. Sun ◽  
H.S. Tang ◽  
C.B. Jiang ◽  
B. Deng ◽  
...  
Keyword(s):  
Real World ◽  
Bridge Deck ◽  
Tsunami Wave ◽  
Numerical Study ◽  
Highway Bridge ◽  
Hydrodynamic Load ◽  
Coupled Modeling

Numerical Study on Navigation Regulation Engineering in the Lower Reaches of Yangtze River

2012 ◽  
Vol 209-211 ◽  
pp. 751-754
Author(s):  
Ming Jin Zhang ◽  
Hua Qing Zhang ◽  
Yan Hua Yang
Keyword(s):  
Numerical Simulation ◽  
Numerical Model ◽  
Yangtze River ◽  
Numerical Study ◽  
Main Stream ◽  
The Yangtze River ◽  
Channel Regulation ◽  
Simulation Results ◽  
2D Numerical Model ◽  
Navigation Condition

The waterway of Jiangxinzhou to Wujiang section is the only hindering navigation section in Wuhu to Nanjing of the lower reaches of the Yangtze River. Because of the unsteadiness of the main stream, the navigation condition in this section tends to worse, in which the regulation work is sorely needed and more important. The major problem for channel regulation in this section is the design of regulation project. In this paper, the 2D numerical model for simulating the flow and sediment in the waterway of Jiangxinzhou-Wujiang section is used to analyze these questions. From the numerical simulation results, we know that the overall navigation regulation project can solve the problem of hindering navigation.

A first numerical simulation of the development and structure of the sea breeze on the Island of Mallorca

1995 ◽  
Vol 13 (9) ◽  
pp. 981-994 ◽  
Author(s):  
C. Ramis ◽  
R. Romero
Keyword(s):  
Numerical Simulation ◽  
Numerical Model ◽  
Diurnal Cycle ◽  
Numerical Study ◽  
Sea Breeze ◽  
Appreciable Effect ◽  
Main Factors ◽  
Soil Dryness

Abstract. A numerical study of the development and structure of the sea breeze in Mallorca is presented using a meso-<beta> numerical model. The model includes a detailed representation of the soil and vegetation processes. The study covers a diurnal cycle. The results show that the model reproduces the main known features of the circulation and new ones appear, which seem to have an appreciable effect on the circulation during the decay of the sea breeze. The orography and soil dryness have been identified as the main factors determining the structure of the breeze. Three more experiments have been performed in order to isolate the effect of each factor.

scholarly journals Numerical Study on the Local Buckling Behaviour of Bolted Steel Plates in Steel Jacketing

2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
Xiao-liang Xu ◽  
Zhou-dao Lu ◽  
Ling-zhi Li ◽  
Chang-jiu Jiang
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Numerical Model ◽  
Parametric Study ◽  
Numerical Study ◽  
Local Buckling ◽  
Initial Imperfection ◽  
Field Capacity ◽  
Steel Plates ◽  
Previous Experimental Study

A numerical simulation was conducted to investigate the local buckling behaviour of the bolted steel plates in steel jacketing technique. The numerical model was firstly validated by the results of a previous experimental study. Then a parametric study was conducted to investigate the influence of different restraint measures on the local buckling behaviour and the sensitivity of the buckling behaviour to the initial imperfection. Fitted formulae were developed to calculate the structural field capacity of the bolted steel plates, and recommended values of stiffener size were also provided to facilitate the strengthening design of steel jacketing.

scholarly journals Blowing and drifting snow in Alpine terrain: numerical simulation and related field measurements

1998 ◽  
Vol 26 ◽  
pp. 174-178 ◽  
Author(s):  
Peter Gauer
Keyword(s):  
Numerical Simulation ◽  
Numerical Model ◽  
Three Dimensional ◽  
Field Measurements ◽  
Blowing Snow ◽  
Related Field ◽  
Drifting Snow ◽  
Physically Based ◽  
Snow Transport

A physically based numerical model of drifting and blowing snow in three-dimensional terrain is developed. The model includes snow transport by saltation and suspension. As an example, a numerical simulation for an Alpine ridge is presented and compared with field measurements.

scholarly journals Development of Depth-Limited Wave Boundary Layers over a Smooth Bottom

2020 ◽  
Vol 9 (1) ◽  
pp. 27
Author(s):  
Hitoshi Tanaka ◽  
Nguyen Xuan Tinh ◽  
Xiping Yu ◽  
Guangwei Liu
Keyword(s):  
Numerical Simulation ◽  
Boundary Layer ◽  
Boundary Layers ◽  
Wave Motion ◽  
Numerical Study ◽  
Experiment Data ◽  
Tidal Motion ◽  
Long Period ◽  
Simulation Results ◽  
Wave Boundary

A theoretical and numerical study is carried out to investigate the transformation of the wave boundary layer from non-depth-limited (wave-like boundary layer) to depth-limited one (current-like boundary layer) over a smooth bottom. A long period of wave motion is not sufficient to induce depth-limited properties, although it has simply been assumed in various situations under long waves, such as tsunami and tidal currents. Four criteria are obtained theoretically for recognizing the inception of the depth-limited condition under waves. To validate the theoretical criteria, numerical simulation results using a turbulence model as well as laboratory experiment data are employed. In addition, typical field situations induced by tidal motion and tsunami are discussed to show the usefulness of the proposed criteria.

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