Towards a bio-mimetic flytrap robot based on a snap-through mechanism

Kim, Seung-Won; Koh, Je‐Sung; Cho, Maenghyo; Cho, Kyu-Jin

doi:10.1109/biorob.2010.5627994

Cited by 37 publications

(31 citation statements)

References 20 publications

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“…The previous study of a flytrap robot presented the similarity between the bi-stability of the doubly-curved leaf of the Venus flytrap and the bi-stability of the unsymmetric laminate CFRP structure as shown in Fig. 2 [2].…”

Section: Introductionmentioning

confidence: 93%

“…The previous flytrap robot was developed based on the bi-stability of composite structure and it used a SMA spring actuator for snap-through [2]. Though the robot performed the closure motion similar to the flytrap plant, it did not show the open motion, which needs large deformation.…”

Section: Introductionmentioning

confidence: 98%

“…Applying bending moment by fingers, CFRP composite snap-through progress sequence from (a) to (d) .Snap-through occurs between (b) to (c)[2].…”

mentioning

confidence: 97%

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Design & analysis a flytrap robot using bi-stable composite

Kim

Koh

Cho

et al. 2011

2011 IEEE International Conference on Robotics and Automation

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This paper presents a second prototype of the flytrap robot which mimics the fast snap-through motion of the Venus flytrap, the previous version of the robot. This second prototype employs a new type of unsymmetrically laminated carbon fiber reinforced prepreg (CFRP) structure which has two different curvatures, and an SMA spring actuator. To estimate the force of snap-through the structure, a linear beam bending model is introduced and a force-displacement experiment is demonstrated. Based on the numerical and experimental results, the flytrap robot can be closed rapidly and opened for re-load. The closure time is about 100ms.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 98%

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Design & analysis a flytrap robot using bi-stable composite

Kim

Koh

Cho

et al. 2011

2011 IEEE International Conference on Robotics and Automation

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“…The static characteristics of unsymmetric bi-stable fiber reinforced plates have been well quantified, after a comprehensive research effort over the last three decades. Bi-stable composite plates have shown extensive potential applications for morphing aircraft [5][6][7][8][9][10] and energy harvesting devices [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Advanced nonlinear dynamic modelling of bi-stable composite plates

Friswell

2018

Composite Structures

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This paper proposes a novel analytical model to study the nonlinear dynamics of cross-ply bi-stable composite plates. Based on Hamilton's principle, in conjunction with the Rayleigh-Ritz method, an advanced analytical model with only 17 unknown terms is developed to predict the entire nonlinear dynamic response of bi-stable composite plates, which are excited by an electrodynamic shaker. The coupling between the bi-stable plate and the shaker is considered in the development of analytical model. This work, for the first time, simulates the full dynamics of bi-stable plates using an analytical model, including the prediction of the nonlinear characteristics of single well vibration and cross well vibration. Numerical results on three vibrational patterns of two standard cross-ply composite plates are obtained to study the nonlinear dynamics of bi-stable plates. The prediction accuracy on the dynamic characteristics of different vibrational patterns of bi-stable plates are verified by both finite element analysis (FEA) and experimental results. Large amplitude cross-well vibrations due to the transitions between different stable states of bi-stable plates are also characterized accurately. Applying this 17-term analytical model for the dynamic analysis of bi-stable plates is straightforward, as the mass and stiffness properties are obtained directly from the geometry and material properties. Only the damping coefficients for different plates need to be determined from experiments. Furthermore, this proposed 17-term analytical model has much higher computational efficiency than FEA.

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“…Digital actuators can also be used as array to perform more complex tasks by combing several elementary actions. The common applications of actuators arrays are optical switch arrays [13], tactile displays [14], digital robots [15] and displacement tables [16], [17].…”

Section: Introductionmentioning

confidence: 99%

Characterization of a conveyance device based on a digital actuators array and a structured plate

Petit

Dupont

et al. 2016

2016 11th France-Japan &Amp; 9th Europe-Asia Congress on Mechatronics (MECATRONICS) /17th International Conference on Research

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This paper presents a conveyance device based on a digital actuators array and a structured plate. The actuators array is composed of four electromagnetic digital actuators, arranged in a 2 × 2 matrix. The principle of the actuators array and of the conveyance device are firstly presented. The control strategy of the array to generate the conveyance task is then described. A prototype of the device is presented and experimentally tested. Conveyance of the structured plate has been experimental realized in different conditions and compared with theoretical results.

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Towards a bio-mimetic flytrap robot based on a snap-through mechanism

Cited by 37 publications

References 20 publications

Design & analysis a flytrap robot using bi-stable composite

Design & analysis a flytrap robot using bi-stable composite

Advanced nonlinear dynamic modelling of bi-stable composite plates

Characterization of a conveyance device based on a digital actuators array and a structured plate

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