Modeling and simulation of electrostatic attraction force for climbing robots on the conductive wall material

Mao, Jiubing; Lan, Qing; Wang, Yong; Li, Jun; Xue, Lian

doi:10.1109/icma.2014.6885832

Cited by 14 publications

(10 citation statements)

References 20 publications

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“…This air gap leads to greater separation of the plates than expected, and also introduces a region of lower permittivity (Figure 3 (c)). Thus, from the work of Mao et al a better approximation for the expected level of holding force (for a given air gap) can be found [12]. …”

Section: Level Of Adhesive Forcementioning

confidence: 99%

Electrostatic adhesion for added functionality of composite structures

Heath

Bond

Potter

2016

Smart Mater. Struct.

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Electrostatic adhesion can be used as a means of reversible attachment. The incorporation of electrostatic adhesion into fibre reinforced polymer (FRP) composite structures could provide significant value added functionality. Imparting large potential differences (~ 2 kV) across electrodes generates an attractive force, thus providing a means of attachment. This could be used as a reversible latching mechanism or as a means of controllable internal connectivity. Varying the connectivity for discrete elements of a substructure of a given design allows for control of internal load paths and moment of area of the cross section. This could facilitate variable stiffness (both in bending and torsion). Using a combination of existing fabrication techniques, functional electrodes have been integrated within a FRP. Copper polyimide thin film laminate material has been both co-cured with carbon fibre reinforced epoxy (CFRP) and bonded to PVC closed cell foam core material to provide a range of structural configurations with integrated electrodes. The ability of such integrated devices to confer variations in global bending stiffness of basic beam structures is investigated. Through the application of 4 kV across integrated electrostatic adhesive devices, a 112% increase in flexural stiffness has been demonstrated for a composite sandwich structure.

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Section: Level Of Adhesive Forcementioning

confidence: 99%

Electrostatic adhesion for added functionality of composite structures

Heath

Bond

Potter

2016

Smart Mater. Struct.

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“…For conductive substrates, Coulomb forces will be dominant if the volume resistivity of the dielectric material covering the electrodes is greater than approximately 10 14 Ω cm whilst Johnsen-Rahbek forces will be dominant if the volume resistivity is between approximately 10 10 and 10 12 Ω cm [13]. The theoretical modelling of electroadhesive forces on conductive substrates were mostly based on the Maxwell stress tensor method and the virtual work method, and is always based on several assumptions [14] such as that the dielectric material is rigid, linear, homogenous, isotropic and neutrally charged, the scale of the area of the pad is far larger than the thickness dielectrics within the capacitor and the fringing fields are neglected. Usually, the electroadhesive forces between the pad and grounded conductive substrates are different from those substrates where a permanent earth is not ensured [7].…”

Section: Principle Of Electroadhesionmentioning

confidence: 99%

Investigation of relationship between interfacial electroadhesive force and surface texture

Guo

Tailor

Bamber

et al. 2015

J. Phys. D: Appl. Phys.

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“…To account for the introduction of an air gap, the configuration can be more accurately represented as in Figure 4 (b). The inclusion of a region of lower permittivity leads to a reduction in the achieved holding force, and a better approximation for this force has been shown by Mao et al [28]:…”

Section: Introductionmentioning

confidence: 87%

Morphing hybrid honeycomb (MOHYCOMB) within situPoisson’s ratio modulation

Heath

Neville

Scarpa

et al. 2016

Smart Mater. Struct.

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Electrostatic adhesion can be used as a means of reversible attachment. Through application of high voltage (~2kV) across closely spaced parallel plate electrodes, significant shear stresses (11 kPa) can be generated. The highest levels of electrostatic holding force can be achieved through close contact of connection surfaces; this is facilitated by flexible electrodes which can conform to reduce air gaps. Cellular structures are comprised of thin walled elements, making them ideal host structures for electrostatic adhesive elements. The reversible adhesion provides control of the internal connectivity of the cellular structure, and determines the effective cell geometry. This would offer variable stiffness and control of the effective Poisson's ratio of the global cellular array. Using copper-polyimide thin film laminates and PVDF thin film dielectrics, double lap shear electrostatic adhesive elements have been introduced to a cellular geometry. By activating different groups of reversible adhesive interfaces, the cellular array can assume four different cell configurations. A maximum stiffness modulation of 450 % between the "All off" and "All on" cell morphologies has been demonstrated. This structure is also capable of in-situ effective Poisson's ratio variations, with the ability to switch between values of -0.45 and 0.54. Such a structure offers the potential for tuneable vibration absorption (due to its variable stiffness properties), or as a smart honeycomb with controllable curvature and is termed MOHYCOMB (MOrphing HYbrid honeyCOMB).

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Modeling and simulation of electrostatic attraction force for climbing robots on the conductive wall material

Cited by 14 publications

References 20 publications

Electrostatic adhesion for added functionality of composite structures

Electrostatic adhesion for added functionality of composite structures

Investigation of relationship between interfacial electroadhesive force and surface texture

Morphing hybrid honeycomb (MOHYCOMB) within situPoisson’s ratio modulation

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