Modelling and Computation of Silicone Rubber Deformation Adapting Neo-Hookean Constitutive Equation

Noor, Siti Noor Azizzati Mohd; Mahmud, Jamaluddin

doi:10.1109/csnt.2015.276

Cited by 11 publications

(6 citation statements)

References 18 publications

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“…The Neo-Hookean model is adopted as the skin constitutive model, which describes the constitutive relationship of hyper-elastic materials. The equation of the strain energy potential U is derived as (1) [ [54] , [55] , [56] ].

where C 10 is the material stiffness, and I 1 is the first invariant of the left Cauchy-Green deformation tensor.…”

Section: Methodsmentioning

confidence: 99%

A flexible and dissolving traditional Chinese medicine microneedle patch for sleep-aid intervention

He,

Fang,

et al. 2024

Heliyon

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where C 10 is the material stiffness, and I 1 is the first invariant of the left Cauchy-Green deformation tensor.…”

Section: Methodsmentioning

confidence: 99%

A flexible and dissolving traditional Chinese medicine microneedle patch for sleep-aid intervention

He,

Fang,

et al. 2024

Heliyon

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“…This equation is valid for rubbers with an A-shore hardness S higher than 40, which is the case of the rubber used for the fins, which has an A-shore hardness of 45, and the resulting Young modulus is 1.76 MPa. The material is modeled as incompressible and isotropic with a Neo-Hookean constitutive equation:

where W is the strain energy density,

is the first invariant of the left Cauchy–Green deformation tensor, and

is a constant of the material which for silicone rubber is equal to 1.3078 MPa [ 47 ].…”

Section: Robot Designmentioning

confidence: 99%

A Bioinspired Cownose Ray Robot for Seabed Exploration

et al. 2023

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This article presents the design and the experimental tests of a bioinspired robot mimicking the cownose ray. These fish swim by moving their large and flat pectoral fins, creating a wave that pushes backward the surrounding water so that the fish is propelled forward due to momentum conservation. The robot inspired by these animals has a rigid central body, housing motors, batteries, and electronics, and flexible pectoral fins made of silicone rubber. Each of them is actuated by a servomotor driving a link inside the leading edge, and the traveling wave is reproduced thanks to the flexibility of the fin itself. In addition to the pectoral fins, two small rigid caudal fins are present to improve the robot’s maneuverability. The robot has been designed, built, and tested underwater, and the experiments have shown that the locomotion principle is valid and that the robot is able to swim forward, perform left and right turns, and do floating or diving maneuvers.

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“…The fingers of the gripper were reproduced by 3D printing but a new element in silicone was added to simulate the human fingertip contact. The fingertip was made of EcoFlex 00-30 (Noor and Mahmud, 2015;Steck et al, 2019;Pozzi et al, 2021) and crafted using a 3D printed mould realized according to a proper design. After casting, the silicone fingerpad was mounted on the last phalanx of the WaveJoint finger (Figure 3).…”

Section: Sample Preparationmentioning

confidence: 99%

Contact mechanics analysis of a soft robotic fingerpad

et al. 2022

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The precision grasping capabilities of robotic hands is a key feature which is more and more required in the manipulation of objects in several unstructured fields, as for instance industrial, medical, agriculture and food industry. For this purpose, the realization of soft robotic fingers is crucial to reproduce the human finger skills. From this point of view the fingerpad is the part which is mostly involved in the contact. Particular attention must be paid to the knowledge of the mechanical contact behavior of soft artificial fingerpads. In this paper, artificial silicone fingerpads are applied to the last phalanx of robotic fingers actuated by tendons. The mechanical interaction between the fingerpad and a flat surface is analyzed in terms of deformations, contact areas and indentations. A reliable model of fingertip deformation properties provides important information for understanding robotic hand performance, that can be useful both in the design phase and for defining control strategies. The approach is based on theoretical, experimental, and numerical methods. The results will be exploited for the design of more effective robotic fingers for precision grasping of soft or fragile objects avoiding damages.

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Modelling and Computation of Silicone Rubber Deformation Adapting Neo-Hookean Constitutive Equation

Cited by 11 publications

References 18 publications

A flexible and dissolving traditional Chinese medicine microneedle patch for sleep-aid intervention

A flexible and dissolving traditional Chinese medicine microneedle patch for sleep-aid intervention

A Bioinspired Cownose Ray Robot for Seabed Exploration

Contact mechanics analysis of a soft robotic fingerpad

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