Development of a Computationally Efficient Fabric Model for Optimization of Gripper Trajectories in Automated Composite Draping

Christian Krogh, Johnny Jakobsen, James A. Sherwood

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Resumé

An automated prepreg fabric draping system is being developed which consists of an array of actuated grippers. It has the ability to pick up a fabric ply and place it onto a double-curved mold surface. A previous research effort based on a nonlinear Finite Element model showed that the movements of the grippers should be chosen carefully to avoid misplacement and induce of wrinkles in the draped configuration. Thus, the present study seeks to develop a computationally efficient model of the mechanical behavior of a fabric based on 2D catenaries which can be used for optimization of the gripper trajectories. The model includes bending stiffness, large deflections, large ply shear and a simple contact
formulation. The model is found to be quick to evaluate and gives very reasonable predictions of the displacement field.
OriginalsprogEngelsk
TitelEngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization
Antal sider12
Udgivelses stedSchweiz
ForlagSpringer
Publikationsdato13 sep. 2018
Sider1107-1118
ISBN (Trykt)978-3-319-97772-0
ISBN (Elektronisk)978-3-319-97773-7
DOI
StatusUdgivet - 13 sep. 2018
BegivenhedEngOpt2018: 6th International Conference on Engineering Optimization - Instituto Superior Técnico, Lissabon, Portugal
Varighed: 17 sep. 201819 sep. 2018
http://engopt2018.tecnico.ulisboa.pt/

Konference

KonferenceEngOpt2018
LokationInstituto Superior Técnico
LandPortugal
ByLissabon
Periode17/09/201819/09/2018
Internetadresse

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Grippers
Trajectories
Composite materials
Stiffness

Citer dette

Krogh, C., Jakobsen, J., & Sherwood, J. A. (2018). Development of a Computationally Efficient Fabric Model for Optimization of Gripper Trajectories in Automated Composite Draping. I EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization (s. 1107-1118). Schweiz: Springer. https://doi.org/10.1007/978-3-319-97773-7_96
Krogh, Christian ; Jakobsen, Johnny ; Sherwood, James A. / Development of a Computationally Efficient Fabric Model for Optimization of Gripper Trajectories in Automated Composite Draping. EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization. Schweiz : Springer, 2018. s. 1107-1118
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title = "Development of a Computationally Efficient Fabric Model for Optimization of Gripper Trajectories in Automated Composite Draping",
abstract = "An automated prepreg fabric draping system is being developed which consists of an array of actuated grippers. It has the ability to pick up a fabric ply and place it onto a double-curved mold surface. A previous research effort based on a nonlinear Finite Element model showed that the movements of the grippers should be chosen carefully to avoid misplacement and induce of wrinkles in the draped configuration. Thus, the present study seeks to develop a computationally efficient model of the mechanical behavior of a fabric based on 2D catenaries which can be used for optimization of the gripper trajectories. The model includes bending stiffness, large deflections, large ply shear and a simple contactformulation. The model is found to be quick to evaluate and gives very reasonable predictions of the displacement field.",
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Krogh, C, Jakobsen, J & Sherwood, JA 2018, Development of a Computationally Efficient Fabric Model for Optimization of Gripper Trajectories in Automated Composite Draping. i EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization. Springer, Schweiz, s. 1107-1118, EngOpt2018, Lissabon, Portugal, 17/09/2018. https://doi.org/10.1007/978-3-319-97773-7_96

Development of a Computationally Efficient Fabric Model for Optimization of Gripper Trajectories in Automated Composite Draping. / Krogh, Christian; Jakobsen, Johnny; Sherwood, James A.

EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization. Schweiz : Springer, 2018. s. 1107-1118.

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

TY - GEN

T1 - Development of a Computationally Efficient Fabric Model for Optimization of Gripper Trajectories in Automated Composite Draping

AU - Krogh, Christian

AU - Jakobsen, Johnny

AU - Sherwood, James A.

PY - 2018/9/13

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N2 - An automated prepreg fabric draping system is being developed which consists of an array of actuated grippers. It has the ability to pick up a fabric ply and place it onto a double-curved mold surface. A previous research effort based on a nonlinear Finite Element model showed that the movements of the grippers should be chosen carefully to avoid misplacement and induce of wrinkles in the draped configuration. Thus, the present study seeks to develop a computationally efficient model of the mechanical behavior of a fabric based on 2D catenaries which can be used for optimization of the gripper trajectories. The model includes bending stiffness, large deflections, large ply shear and a simple contactformulation. The model is found to be quick to evaluate and gives very reasonable predictions of the displacement field.

AB - An automated prepreg fabric draping system is being developed which consists of an array of actuated grippers. It has the ability to pick up a fabric ply and place it onto a double-curved mold surface. A previous research effort based on a nonlinear Finite Element model showed that the movements of the grippers should be chosen carefully to avoid misplacement and induce of wrinkles in the draped configuration. Thus, the present study seeks to develop a computationally efficient model of the mechanical behavior of a fabric based on 2D catenaries which can be used for optimization of the gripper trajectories. The model includes bending stiffness, large deflections, large ply shear and a simple contactformulation. The model is found to be quick to evaluate and gives very reasonable predictions of the displacement field.

KW - Composites

KW - Carbin fiber prepreg

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KW - Trajectory optimization

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Krogh C, Jakobsen J, Sherwood JA. Development of a Computationally Efficient Fabric Model for Optimization of Gripper Trajectories in Automated Composite Draping. I EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization. Schweiz: Springer. 2018. s. 1107-1118 https://doi.org/10.1007/978-3-319-97773-7_96