Stiffness Corrections for Overlaps and Gaps in Steered Composite Panel Optimization

Michel van Tooren; Ali Elham; D.A. Lucas

doi:10.2514/6.2017-0895

Stiffness Corrections for Overlaps and Gaps in Steered Composite Panel Optimization

Michel van Tooren, Ali Elham, D.A. Lucas

Flight Performance and Propulsion

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

7 Citations (Scopus)

Abstract

In this paper, a method is introduced that predicts the influence of gaps and overlaps introduced by fiber steering on the stiffness and strength of composite laminates. This method is based on the incorporation of a “density functional” which translates the effect of discrete gaps and laps into a continuous correction of the reduced stiffness matrix. It also includes a function to incorporate a fiber placement manufacturing strategy. Test configurations used to test the validity of the density functional approach show results consistent with the expected gap/overlap distributions, and also demonstrate the robustness of the manufacturing strategy function. The method is to be included in the TopSteer optimization code1 to study the influence of gaps and overlaps on optimization results.

Original language	English
Title of host publication	58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Subtitle of host publication	Grapevine, Texas, USA
Publisher	American Institute of Aeronautics and Astronautics Inc. (AIAA)
Number of pages	14
ISBN (Electronic)	978-1-62410-453-4
DOIs	https://doi.org/10.2514/6.2017-0895
Publication status	Published - 2017
Event	58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference - Grapevine, United States Duration: 9 Jan 2017 → 13 Jan 2017 Conference number: 58 http://arc.aiaa.org/doi/book/10.2514/MSDM17

Conference

Conference	58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Country/Territory	United States
City	Grapevine
Period	9/01/17 → 13/01/17
Internet address	http://arc.aiaa.org/doi/book/10.2514/MSDM17

Access to Document

10.2514/6.2017-0895

Cite this

@inproceedings{1895e1ffdfc649eaaace225346dc603a,

title = "Stiffness Corrections for Overlaps and Gaps in Steered Composite Panel Optimization",

abstract = "In this paper, a method is introduced that predicts the influence of gaps and overlaps introduced by fiber steering on the stiffness and strength of composite laminates. This method is based on the incorporation of a “density functional” which translates the effect of discrete gaps and laps into a continuous correction of the reduced stiffness matrix. It also includes a function to incorporate a fiber placement manufacturing strategy. Test configurations used to test the validity of the density functional approach show results consistent with the expected gap/overlap distributions, and also demonstrate the robustness of the manufacturing strategy function. The method is to be included in the TopSteer optimization code1 to study the influence of gaps and overlaps on optimization results. ",

author = "{van Tooren}, Michel and Ali Elham and D.A. Lucas",

year = "2017",

doi = "10.2514/6.2017-0895",

language = "English",

booktitle = "58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference",

publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",

address = "United States",

note = "58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference ; Conference date: 09-01-2017 Through 13-01-2017",

url = "http://arc.aiaa.org/doi/book/10.2514/MSDM17",

}

van Tooren, M, Elham, A & Lucas, DA 2017, Stiffness Corrections for Overlaps and Gaps in Steered Composite Panel Optimization. in 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference: Grapevine, Texas, USA., AIAA 2017-0895, American Institute of Aeronautics and Astronautics Inc. (AIAA), 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Grapevine, United States, 9/01/17. https://doi.org/10.2514/6.2017-0895

Stiffness Corrections for Overlaps and Gaps in Steered Composite Panel Optimization. / van Tooren, Michel; Elham, Ali; Lucas, D.A.

58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference: Grapevine, Texas, USA. American Institute of Aeronautics and Astronautics Inc. (AIAA), 2017. AIAA 2017-0895.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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PY - 2017

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N2 - In this paper, a method is introduced that predicts the influence of gaps and overlaps introduced by fiber steering on the stiffness and strength of composite laminates. This method is based on the incorporation of a “density functional” which translates the effect of discrete gaps and laps into a continuous correction of the reduced stiffness matrix. It also includes a function to incorporate a fiber placement manufacturing strategy. Test configurations used to test the validity of the density functional approach show results consistent with the expected gap/overlap distributions, and also demonstrate the robustness of the manufacturing strategy function. The method is to be included in the TopSteer optimization code1 to study the influence of gaps and overlaps on optimization results.

AB - In this paper, a method is introduced that predicts the influence of gaps and overlaps introduced by fiber steering on the stiffness and strength of composite laminates. This method is based on the incorporation of a “density functional” which translates the effect of discrete gaps and laps into a continuous correction of the reduced stiffness matrix. It also includes a function to incorporate a fiber placement manufacturing strategy. Test configurations used to test the validity of the density functional approach show results consistent with the expected gap/overlap distributions, and also demonstrate the robustness of the manufacturing strategy function. The method is to be included in the TopSteer optimization code1 to study the influence of gaps and overlaps on optimization results.

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DO - 10.2514/6.2017-0895

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