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

Christian Krogh; Johnny Jakobsen; James A. Sherwood

doi:10.1007/978-3-319-97773-7_96

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

Christian Krogh, Johnny Jakobsen, James A. Sherwood

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

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 contact
formulation. The model is found to be quick to evaluate and gives very reasonable predictions of the displacement field.

Original language	English
Title of host publication	EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization
Number of pages	12
Place of Publication	Schweiz
Publisher	Springer
Publication date	13 Sept 2018
Pages	1107-1118
ISBN (Print)	978-3-319-97772-0
ISBN (Electronic)	978-3-319-97773-7
DOIs	https://doi.org/10.1007/978-3-319-97773-7_96
Publication status	Published - 13 Sept 2018
Event	EngOpt2018: 6th International Conference on Engineering Optimization - Instituto Superior Técnico, Lissabon, Portugal Duration: 17 Sept 2018 → 19 Sept 2018 http://engopt2018.tecnico.ulisboa.pt/

Conference

Conference	EngOpt2018
Location	Instituto Superior Técnico
Country/Territory	Portugal
City	Lissabon
Period	17/09/2018 → 19/09/2018
Internet address	http://engopt2018.tecnico.ulisboa.pt/

Keywords

Composites
Carbin fiber prepreg
Draping
Trajectory optimization

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10.1007/978-3-319-97773-7_96

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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.",

keywords = "Composites, Carbin fiber prepreg, Draping, Trajectory optimization",

author = "Christian Krogh and Johnny Jakobsen and Sherwood, {James A.}",

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booktitle = "EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization",

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note = "EngOpt2018 ; Conference date: 17-09-2018 Through 19-09-2018",

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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. in EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization. Springer, Schweiz, pp. 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. p. 1107-1118.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-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

Y1 - 2018/9/13

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

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