Thermally induced multistable configurations of variable stiffness composite plates: Semi-analytical and finite element investigation

Haldar, A.; Reinoso, J.; Jansen, Eelco; Rolfes, Raimund

doi:10.1016/j.compstruct.2017.02.014

Cited by 71 publications

(18 citation statements)

References 33 publications

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“…Recently, the thermal buckling behaviour of variable-stiffness plates was investigated in [36], using a thin-plate finite element formulation, and [37], by considering FSDT. Thermally induced multi-stable configurations were assessed by Haldar et al [38] using finite elements and the Ritz approach proposed by Dano and Hyer [39].…”

Section: Introductionmentioning

confidence: 99%

Thermal Buckling Behaviour of Thin and Thick Variable-Stiffness Panels

Vescovini

Dozio

2018

J. Compos. Sci.

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The possibility of designing composite panels with non-uniform stiffness properties offers a chance for achieving highly-efficient configurations. This is particularly true for buckling-prone structures, whose response can be shaped through a proper distribution of the membrane and bending stiffnesses. The thermal buckling behaviour of composite panels is among the aspects that could largely benefit from the adoption of a variable-stiffness design, but, in spite of that, it has rarely been addressed. The paper illustrates a semi-analytical approach for evaluating the thermal buckling response of variable-stiffness plates (VSP) by considering different boundary conditions. The formulation relies upon the method of Ritz and a variable-kinematic approach, leading to a computationally efficient implementation, which is particularly useful for exploring the larger design spaces, typical of variable-stiffness configurations. Due to the possibility of choosing the underlying kinematic approach as an input of the analysis, the formulation is not restricted to thin plates, but is suitable for analyzing the response of thick plates as well. Novel results are derived, which can be useful for benchmarking purposes and for gathering insight into the mechanical behaviour of variable-stiffness plates. Furthermore, the importance of transverse shear flexibility is illustrated with respect to the boundary conditions as well as the degree of steering of the fibers.

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Section: Introductionmentioning

confidence: 99%

Thermal Buckling Behaviour of Thin and Thick Variable-Stiffness Panels

Vescovini

Dozio

2018

J. Compos. Sci.

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“…There was a lot of work done in the literature on the unsymmetric bistable plates in its individual form, but one of the significant gap identified was the study on the factors affecting the required snap‐through and snap‐back loads for different deflections of these laminates. So far in literature, the shapes of laminates that have been studied were either rectangle or square 13–15 . In this study, the behaviour of triangular shape laminates and the actuation force required for the snap through will be identified.…”

Section: Introductionmentioning

confidence: 99%

Study on the actuation force of triangular bistable composite laminates

Kumar

Nair

Rao

2020

Mat Design & Process Comms

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Morphing multistable structures is treated as computationally complex smart structures, which can show reconfigurable stable configurations for the changes in surrounding loads. Shape morphing structures exhibit various equilibrium stable shapes and require actuation energy for the shape transition during its structural performance. The major geometries of individual unsymmetric laminates studied so far were either rectangular or square. This paper attempts to study the behaviour of bistable shapes obtained from triangular shape unsymmetrical composite laminates for morphing applications. Snap through between the simulated bistable shapes is obtained by applying a transverse point load on the surface of the laminate. A detailed parametric study is performed to identify the effect of geometrical parameters on the snap‐through force of triangular laminates. All numerical investigations are performed using a commercially available finite element software, Abaqus.

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“…The methods to produce multistable shells have received great attention and are well documented in the literature [1], in which thermal stress-based bistable shells [2,3] and prestress-based bistable shells [4][5][6] are found to be the most common bistable components. Since 1981, ever since Hyer reported [2] the bistable cured shapes of unsymmetrical laminates, extensive works on bistable laminates have been published, especially on the prediction of cured shapes of bistable using analytical approaches [7][8][9][10], and the robust simulation of the snap-through process by finite element analyses [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%