TY - GEN
T1 - Studies into computational modeling of fabric in inflatable structures
AU - Derkevorkian, Armen
AU - Hill, Jeremy
AU - Avery, Philip
AU - Farhat, Charbel
AU - Rabinovitch, Jason
AU - Peterson, Lee D.
N1 - Publisher Copyright:
© 2019, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2019
Y1 - 2019
N2 - Computational modeling of fluid-structure-interaction (FSI) of supersonic parachute de-ployment is a challenging task. A recent research collaboration between the Farhat Research Group (FRG) at Stanford University and the Jet Propulsion Laboratory (JPL) at the Califor-nia Institute of Technology is aimed to develop such modeling capability using FRG’s AERO Suite. As part of this effort, various structural aspects of the problem are being investigated in order to accurately capture relevant physical phenomena in the computational simulation. Recently, a supersonic parachute test was performed by the Advanced Supersonic Parachute In-flation Research Experiment (ASPIRE) program at JPL. Post-test inspection of the parachute canopy indicates shear-like behavior on the parachute canopy along the seams. In this paper, coupon-level simulation tests are presented to investigate the effects of various seam modeling techniques on the accurate prediction of the fabric behavior under uniaxial loading conditions. Two different element types are utilized to model the seams and are compared with each other: 2D beam elements and 3D membrane elements. In the second part of this paper, a nonlinear orthotropic material constitutive law is investigated. The material model has a tabular format which allows capturing nonlinear biaxial stress-strain relationships often encountered in fab-ric. The results from AERO Suite’s structural analyzer AERO-S are compared to LS-DYNA® numerical code. The results from this study will guide the development of a refined version of a disk-gap-band (DGB) parachute structural model that will be used in the simulation of the FSI supersonic parachute deployment.
AB - Computational modeling of fluid-structure-interaction (FSI) of supersonic parachute de-ployment is a challenging task. A recent research collaboration between the Farhat Research Group (FRG) at Stanford University and the Jet Propulsion Laboratory (JPL) at the Califor-nia Institute of Technology is aimed to develop such modeling capability using FRG’s AERO Suite. As part of this effort, various structural aspects of the problem are being investigated in order to accurately capture relevant physical phenomena in the computational simulation. Recently, a supersonic parachute test was performed by the Advanced Supersonic Parachute In-flation Research Experiment (ASPIRE) program at JPL. Post-test inspection of the parachute canopy indicates shear-like behavior on the parachute canopy along the seams. In this paper, coupon-level simulation tests are presented to investigate the effects of various seam modeling techniques on the accurate prediction of the fabric behavior under uniaxial loading conditions. Two different element types are utilized to model the seams and are compared with each other: 2D beam elements and 3D membrane elements. In the second part of this paper, a nonlinear orthotropic material constitutive law is investigated. The material model has a tabular format which allows capturing nonlinear biaxial stress-strain relationships often encountered in fab-ric. The results from AERO Suite’s structural analyzer AERO-S are compared to LS-DYNA® numerical code. The results from this study will guide the development of a refined version of a disk-gap-band (DGB) parachute structural model that will be used in the simulation of the FSI supersonic parachute deployment.
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U2 - 10.2514/6.2019-1028
DO - 10.2514/6.2019-1028
M3 - Conference contribution
AN - SCOPUS:85083942352
SN - 9781624105784
T3 - AIAA Scitech 2019 Forum
BT - AIAA Scitech 2019 Forum
T2 - AIAA Scitech Forum, 2019
Y2 - 7 January 2019 through 11 January 2019
ER -