Experimental and numerical investigation of the nonlinear dynamics of compliant mechanisms for deployable structures

Dewalque, Florence; Schwartz, Cédric; Denoël, Vincent; Croisier, Jean-Louis; Forthomme, Bénédicte; Brüls, Olivier

doi:10.1016/j.ymssp.2017.08.006

Cited by 28 publications

(11 citation statements)

References 38 publications

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“…It was found that, for curved tape hinges and straight tape hinges, there was an important difference in equal-sense folds with small rotation angles. Dewalque et al [13,14] investigated geometrically nonlinear behaviour of tape springs from experimental and numerical methods. The buckling, formation of fold and hysteresis were characterized, and the effect of structural dissipation on the dynamic simulation for the tape spring was examined.…”

Section: Introductionmentioning

confidence: 99%

Folding analysis for thin-walled deployable composite boom

et al. 2019

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Thin-walled deployable composite structures with high strain ability are of considerable interest and increasingly used in aerospace field due to their superior mechanical behaviour and folding function. This paper seeks to investigate large folding deformation behaviour of a thin-walled deployable composite boom (DCB) made of high strain carbon-fibre-reinforced-plastics fabricated by vacuum-bag and co-bonding technologies. Large deformation function tests are conducted to determine tensile, compression and folding behaviours of the DCB. Geometrically nonlinear, explicit and standard, finite element models and an analytical model are implemented to characterize the tensile and compression behaviours of the DCB, and the deviations of predictions from experiments are in an acceptable scatter. Furthermore, a geometrically nonlinear and explicit finite element model is also generated for folding analysis of the DCB, and a good correlation between predictions and experiments has been achieved.

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Section: Introductionmentioning

confidence: 99%

Folding analysis for thin-walled deployable composite boom

et al. 2019

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“…For example, at the material level, crystalline lattices with negative thermal expansivities use geometric mechanisms analogous to those of the helical geometry proposed here [7]. More generally, functionality can be designed for from the nano-, to the architectured-and meta-material scale, all the way up to the macro-scale [8][9][10][11][12][13][14][15][16][17]. Tuneable thermal responses have been achieved by tailoring of meta-material lattices [18].…”

Section: Such Behaviours Includementioning

confidence: 99%

“…. would be more useful to a designer if the resulting criteria for these qualitatively-different behaviours could be expressed in terms of the geometric and material parameters in (16). Unfortunately, since the map (15) from geometric/material parameters to a/b parameters is nonlinear a non-numerical analysis in terms of the geometric/material parameters is not feasible.…”

Section: Figurementioning

confidence: 99%

Multiscale tailoring of helical lattice systems for bespoke thermoelasticity

O’Donnell

Stacey

Chenchiah

et al. 2019

Journal of the Mechanics and Physics of Solids

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Meta-)Materials, e.g. functional or architectured materials that change shape in response to external stimuli, often do so by exploiting solid-solid phase transitions or concerted elastic deformations. For the resulting system to be effective the (meta-)material needs to have desirable and tunable properties at length scales sufficiently small that desirable continuum behaviour of the resulting component is obtained. Developing such (meta-)materials has proven to be an endeavour which requires considerable expertise in science, engineering and mathematics. Here, we pursue an alternative approach where the design for functionality is integrated across multiple length scales in the system. We demonstrate this approach by designing and prototyping helical lattices that act as one-dimensional thermoelastic materials with unusual properties such as negative thermal expansivity-with magnitude far exceeding the most extreme values reported in the literature-and zero-hysteresis shape memory. Our strategy is independent of characteristic length scale, allowing us to design behaviour across a range of dimensions.

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“…In the case of boom application of TS hinges, due to extreme slenderness of appendages deployed, it is susceptible to lose structural stability subjected to various micro-vibration excitation. Thus, its inherent mechanisms of single TS (STS) according to the equal-sense bending and the opposite-sense bending was experimentally investigated (see Figure 2a) [20][21][22]. Besides, various numerical simulation of STS was conducted by an equivalent beam modeling [23] and nonlinear analysis by FE simulation [21,22,24,25].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Solar Panels Deployment with Tape Spring Hinges Having Nonlinear Hysteresis with Friction Compensation

et al. 2020

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In this work, experimental and numerical investigation on the deployment of solar panels with tape spring (TS) hinges showing complex nonlinear hysteresis behavior caused by the snap-through buckling was conducted. Subsequently, it was verified by comparing simulation results by multi-body dynamics (MBD) analysis with test results on ground-based deployment testing considering gravity compensation, termed zero-gravity (Zero-G) device. It has been difficult to predict the folding and unfolding behavior of TS hinges because their moment–rotation relationship showed a nonlinear hysteresis behavior. To realize this attribute, an algorithm that checks the sign of angular velocity of the revolute joints was used to distinguish folding from unfolding. The nonlinear hysteresis was implemented in terms of two path-dependent nonlinear moment–rotation curves with the aid of the expression function (a kind of user subroutine) in MBD software RecurDyn. Finally, it was found that the results of the deployment analysis were in excellent agreement with those of the test when the friction torques of the revolute joints were properly identified by an inverse analysis with the test frames, thus validating the MBD model.

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Experimental and numerical investigation of the nonlinear dynamics of compliant mechanisms for deployable structures

Cited by 28 publications

References 38 publications

Folding analysis for thin-walled deployable composite boom

Folding analysis for thin-walled deployable composite boom

Multiscale tailoring of helical lattice systems for bespoke thermoelasticity

Experimental and Numerical Investigation of Solar Panels Deployment with Tape Spring Hinges Having Nonlinear Hysteresis with Friction Compensation

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