Details
| Original language | English |
|---|---|
| Pages (from-to) | 48-55 |
| Number of pages | 8 |
| Journal | Mechanics of Advanced Materials and Structures |
| Volume | 26 |
| Issue number | 1 |
| Early online date | 17 Jan 2019 |
| Publication status | Published - 2019 |
Abstract
Exploiting the anisotropic nature of composite laminates is a driving factor to improve the design regime of multistable structures. The concept of laminate tailoring is being taken a step ahead by allowing variation in fiber angle orientation within the ply planform. Such composite laminates known as variable stiffness (VS) composites have been reported to provide significant improvements in performance over constant stiffness designs. The phenomenon of snapping from one stable state to another is of paramount importance for multistable structures to be used in morphing applications. VS laminates allow the designer to tailor structural response according to the requirements of the morphing mechanism. This work presents a parametric study to explore designs by exploiting the tailoring options in VS laminates, with the objective of requiring low snap-through and snap-back voltages but at the same time enabling high out-of-plane displacements with the effective and efficient use of microfiber composites actuators. The fiber orientation of the layers of the VS laminate is assumed to vary linearly from the center to the edge of the plate. Design spaces of different laminates were investigated by varying the three angle parameters defining the VS laminates. Finite element analyses on snap-through and snap-back actions on the bistable nature of VS laminates were performed using the help of macro fiber composite actuators.
Keywords
- bistability, Composites, finite element analysis, MFC actuators, variable stiffness laminates
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Mathematics(all)
- General Mathematics
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Mechanics of Advanced Materials and Structures, Vol. 26, No. 1, 2019, p. 48-55.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Design optimization of multistable variable-stiffness laminates
AU - Anilkumar, P. M.
AU - Haldar, Ayan
AU - Jansen, Eelco
AU - Rao, B. N.
AU - Rolfes, Raimund
N1 - Funding information: The first author would like to acknowledge the IIT Master Sandwich Programme funded by German Academic Exchange Service: Deutscher Akademischer Austauschdienst – DAAD, during the course of this research.
PY - 2019
Y1 - 2019
N2 - Exploiting the anisotropic nature of composite laminates is a driving factor to improve the design regime of multistable structures. The concept of laminate tailoring is being taken a step ahead by allowing variation in fiber angle orientation within the ply planform. Such composite laminates known as variable stiffness (VS) composites have been reported to provide significant improvements in performance over constant stiffness designs. The phenomenon of snapping from one stable state to another is of paramount importance for multistable structures to be used in morphing applications. VS laminates allow the designer to tailor structural response according to the requirements of the morphing mechanism. This work presents a parametric study to explore designs by exploiting the tailoring options in VS laminates, with the objective of requiring low snap-through and snap-back voltages but at the same time enabling high out-of-plane displacements with the effective and efficient use of microfiber composites actuators. The fiber orientation of the layers of the VS laminate is assumed to vary linearly from the center to the edge of the plate. Design spaces of different laminates were investigated by varying the three angle parameters defining the VS laminates. Finite element analyses on snap-through and snap-back actions on the bistable nature of VS laminates were performed using the help of macro fiber composite actuators.
AB - Exploiting the anisotropic nature of composite laminates is a driving factor to improve the design regime of multistable structures. The concept of laminate tailoring is being taken a step ahead by allowing variation in fiber angle orientation within the ply planform. Such composite laminates known as variable stiffness (VS) composites have been reported to provide significant improvements in performance over constant stiffness designs. The phenomenon of snapping from one stable state to another is of paramount importance for multistable structures to be used in morphing applications. VS laminates allow the designer to tailor structural response according to the requirements of the morphing mechanism. This work presents a parametric study to explore designs by exploiting the tailoring options in VS laminates, with the objective of requiring low snap-through and snap-back voltages but at the same time enabling high out-of-plane displacements with the effective and efficient use of microfiber composites actuators. The fiber orientation of the layers of the VS laminate is assumed to vary linearly from the center to the edge of the plate. Design spaces of different laminates were investigated by varying the three angle parameters defining the VS laminates. Finite element analyses on snap-through and snap-back actions on the bistable nature of VS laminates were performed using the help of macro fiber composite actuators.
KW - bistability
KW - Composites
KW - finite element analysis
KW - MFC actuators
KW - variable stiffness laminates
UR - http://www.scopus.com/inward/record.url?scp=85060241995&partnerID=8YFLogxK
U2 - 10.1080/15376494.2018.1512022
DO - 10.1080/15376494.2018.1512022
M3 - Article
AN - SCOPUS:85060241995
VL - 26
SP - 48
EP - 55
JO - Mechanics of Advanced Materials and Structures
JF - Mechanics of Advanced Materials and Structures
SN - 1537-6494
IS - 1
ER -