scholarly journals Numerical Investigation of the Flow Angularity Effects of the NASA Langley UPWT on the Ares I DAC1 0.01-Scale Model

2011 ◽  
Author(s):  
Henry Lee ◽  
Goetz Klopfer ◽  
Jeff Onufer
Keyword(s):  
Numerical Investigation ◽  
Scale Model ◽  
Ares I

Overview of the Ares I scale model test program

2011 ◽  
Vol 130 (4) ◽  
pp. 2542-2542
Author(s):  
Douglas D. Counter ◽  
Janice Houstion
Keyword(s):  
Model Test ◽  
Scale Model ◽  
Test Program ◽  
Ares I

scholarly journals Experimental and Numerical Investigation of Bond-Slip Behavior of High-Strength Reinforced Concrete at Service Load

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 293
Author(s):  
Alinda Dey ◽  
Domas Valiukas ◽  
Ronaldas Jakubovskis ◽  
Aleksandr Sokolov ◽  
Gintaris Kaklauskas
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Numerical Investigation ◽  
Load Level ◽  
Scale Model ◽  
Element Analysis ◽  
Bond Slip ◽  
Pull Out ◽  
Bond Mechanism ◽  
Concrete Interface

A bond mechanism at the reinforcement-concrete interface is one of the key sources of the comprehensive functioning of reinforced concrete (RC) structures. In order to apprehend the bond mechanism, the study on bond stress and slip relation (henceforth referred as bond-slip) is necessary. On this subject, experimental and numerical investigations were performed on short RC tensile specimens. A double pull-out test with pre-installed electrical strain gauge sensors inside the modified embedded rebar was performed in the experimental part. Numerically, a three dimensional rib scale model was designed and finite element analysis was performed. The compatibility and reliability of the numerical model was verified by comparing its strain result with an experimentally obtained one. Afterwards, based on stress transfer approach, the bond-slip relations were calculated from the extracted strain results. The maximum disparity between experimental and numerical investigation was found as 19.5% in case of strain data and 7% for the bond-slip relation at the highest load level (110 kN). Moreover, the bond-slip curves at different load levels were compared with the bond-slip model established in CEB-fib Model Code 2010 (MC2010). Overall, in the present study, strain monitoring through the experimental tool and finite element modelling have accomplished a broader picture of the bond mechanism at the reinforcement-concrete interface through their bond-slip relationship.

Numerical Investigation of the Influence of Side Winds on a Simplified Car at Various Yaw Angles

2010 ◽  
Author(s):  
Sinisˇa Krajnovic´ ◽  
Sasan Sarmast
Keyword(s):  
Reynolds Number ◽  
Large Eddy Simulation ◽  
Numerical Investigation ◽  
Scale Model ◽  
Passenger Car ◽  
Eddy Simulation ◽  
Moderate Reynolds Number ◽  
Large Eddy ◽  
Reynolds Number Flows

The flow around a generic passenger car under the influence of crosswind was predicted using large eddy simulation (LES). The Reynolds number based on the incoming velocity the car’s length, L used was Re = 9 × 105. Yaw angles of crosswind of 10°, 20° and 30° were studied and the LES results were compared with the experimental observations and previous Reynolds averaged Naviers-Stokes (RANS) and detached eddy simulations (DES). The present LES were found to predict flows in better agreement with the experimental observations than previous RANS and DES. This shows that LES is better suited than RANS or DES for moderate Reynolds number flows around scale-model car in crosswinds which are inherently unsteady with regions of massive separations.

scholarly journals Ares I Scale Model Acoustic Test above deck water sound suppression results

2011 ◽  
Vol 130 (4) ◽  
pp. 2543-2543
Author(s):  
Douglas D. Counter ◽  
Janice Houston
Keyword(s):  
Scale Model ◽  
Ares I ◽  
Sound Suppression

scholarly journals Ares I scale model acoustic test lift-off acoustics

2011 ◽  
Vol 130 (4) ◽  
pp. 2542-2542
Author(s):  
Douglas D. Counter ◽  
Janice Houston
Keyword(s):  
Scale Model ◽  
Lift Off ◽  
Ares I

5% Ares I scale model acoustic test: Overpressure characterization and analysis

2011 ◽  
Vol 130 (4) ◽  
pp. 2543-2543 ◽  
Author(s):  
David Alvord ◽  
Matthew Casiano ◽  
David McDaniels
Keyword(s):  
Scale Model ◽  
Ares I
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