Computational and experimental study on dynamic instability of extended bistable carbon/epoxy booms subjected to bending

Wu, Chenchen; Viquerat, Andrew

doi:10.1016/j.compstruct.2018.01.029

Cited by 16 publications

(4 citation statements)

References 21 publications

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“…The method assumes that there are no gaps in the unit cell and neglects the yarn's undulations. The mosaic method has been extended to include braids by Wu [44,46] and Knott [18] to good effect. In this extension to the mosaic method a braid ply is assumed to have half the properties of the corresponding unidirectional θ ply, the UD braid ply in the present case.…”

Section: Manufacture and Materials Propertiesmentioning

confidence: 99%

The natural frequency of drum-deployed thin-walled open tubular booms

Shore

Viquerat

Richardson

et al. 2022

Thin-Walled Structures

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Section: Manufacture and Materials Propertiesmentioning

confidence: 99%

The natural frequency of drum-deployed thin-walled open tubular booms

Shore

Viquerat

Richardson

et al. 2022

Thin-Walled Structures

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“…Bistable composite shells have been well studied for decades using theoretical, experimental and computational methods. [13][14][15][16] Guest 17 investigated the mechanical behavior of structures with bistability and proposed a two-parameter model to predict the bistability behavior. Liu et al 18 established an finite element (FE) model of the deployable composite boom and investigated the mechanical behavior in equal-sense and opposite-sense coiling up.…”

Section: Introductionmentioning

confidence: 99%

“…Bistable composite shells have been well studied for decades using theoretical, experimental and computational methods 13–16 . Guest 17 investigated the mechanical behavior of structures with bistability and proposed a two‐parameter model to predict the bistability behavior.…”

Section: Introductionmentioning

confidence: 99%

Experimental validation study on snap through and coiling up of deployable composite shells

Chang,

Zhao,

et al. 2023

Polymer Composites

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Bistable reeled composite shells (BRCS) have been widely used in deployable space structures due to advanced properties of light weight and large volume reduction. A finite element simulation and experimental validation to study the transition of BRCS between their two stable states are performed. In this article, multiscale representative volume element (RVE) modeling is used to compute the equivalent mechanical properties of carbon/epoxy plain woven fabrics that were utilized to construct the deployable composite laminates, followed by experimental verification. The deformation characteristics and strain energy distribution of the deployable composite shell (DCS) during snap through and coiling up are investigated using finite element analysis (FEA) and verified by strain‐gauge and digital image correlation (DIC) tests. The results show that the strain energy distribution in the snap through and coiling up of the carbon/epoxy plain woven BRCS with laminate stacking sequence of [+45/−45] is approximately symmetric. Additionally, an offset phenomena is observed during the coiling up of the BRCS in the finite element modeling. A parametric analysis is complemented to investigate effects of fiber angles on the deformation characteristics and strain energy distribution of the shell structures during snap through and coiling up.Highlights Shell deformation during snap through and coiling up was investigated. DIC test was performed to capture the shell deformation. Strain energy distribution of the deployable composite shell was discussed. Offset phenomena are observed during the coiling up.

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“…Bistable composite laminates can be designed to render two stable static configurations that are suitable candidates for deployable and aero structures, including booms [1], airfoils [2], winglet and wing [3], and trailing edge [4], as well as energy-harvesting devices [5][6][7] and other morphing structures [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Developing Equations for Free Vibration Parameters of Bistable Composite Plates Using Multi-Objective Genetic Programming

et al. 2022

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For the last three decades, bistable composite laminates have gained publicity because of their outstanding features, including having two stable shapes and the ability to change these states. A common challenge regarding the analysis of these structures is the high computational cost of existing analytical methods to estimate their natural frequencies. In the current paper, a new methodology combining the Finite Element Method (FEM) and Multi-Objective Genetic Programming (MOGP) is proposed for the analysis of bistable composite structures, leading to some analytical relations derived to obtain the modal parameters of the shells. To achieve this aim, the data extracted from FEM, consisting of the ratio of the length to width (a/b) and the thickness (t) of the laminate, is split into Train and Validation, and Test, subsets. The former is used in MOGP, and four formulas are proposed for the prediction of the free vibration parameters of bistable laminates. The formulas are checked against the Test subset, and the statistical indices are calculated. An excellent performance is observed for all GP formulas, which indicates the reliability and accuracy of the predictions of these models. Parametric studies and sensitivity analyses are conducted to interpret the trend of input parameters in the GP models and the level of sensitivity of each natural frequency formula to the input parameters. These explicit mathematical expressions can be extended to the other bistable laminates to obtain their natural frequencies on the basis of their geometrical dimensions. The results are validated against the experimental data and verified against FEM outcomes.

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Computational and experimental study on dynamic instability of extended bistable carbon/epoxy booms subjected to bending

Cited by 16 publications

References 21 publications

The natural frequency of drum-deployed thin-walled open tubular booms

The natural frequency of drum-deployed thin-walled open tubular booms

Experimental validation study on snap through and coiling up of deployable composite shells

Developing Equations for Free Vibration Parameters of Bistable Composite Plates Using Multi-Objective Genetic Programming

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