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Bionic dolphin skin based on shape memory alloy artificial muscle

An artificial muscle and memory alloy technology, applied in the field of engineering bionics, to achieve the effect of sensitive elastic working mechanism and durable service life

Inactive Publication Date: 2014-05-28
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of artificial dolphin skin is still at a relatively low level in imitating the special and complex structure of the dolphin skin biological prototype, especially in the imitation of the dynamic deformation structure of the dolphin papillae, which is only replaced by a simple rubber nipple. There is obviously still a lot of room for improvement in terms of bionics and functional bionics

Method used

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  • Bionic dolphin skin based on shape memory alloy artificial muscle
  • Bionic dolphin skin based on shape memory alloy artificial muscle
  • Bionic dolphin skin based on shape memory alloy artificial muscle

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Experimental program
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specific Embodiment 1

[0025] Specific embodiment one: with reference to figure 1 , figure 2 and Figure 6A , The shape memory alloy used to make the shape memory alloy artificial muscle spring 7 is a nickel-titanium alloy with a two-way memory effect, and its transformation temperature is 55°C. When making the shape memory alloy artificial muscle spring 7, it is first processed into a thin and elongated compression spring shape with a height of 5.0 mm when the temperature is higher than 55 °C, and then artificially deformed into a shape with a height of 2.5 mm when the temperature is lower than 55 °C. Stubby compression spring shape.

[0026] The bionic dolphin skin is intended to be applied to a certain type of motor boat (3.2 m in length) that is active in the offshore all year round, and the laying length of the bionic dolphin skin is 2.0 m. First, according to the usual working environment of this type of motorboat (seawater temperature 20°C, density 1.025×10 3 kg / m 3 , The dynamic visco...

specific Embodiment 2

[0029] Specific embodiment two: with reference to figure 1 , figure 2 and Figure 6B , if the shape memory alloy used to make the shape memory alloy artificial muscle spring 7 is a nickel-titanium alloy with two-way memory effect, its transition temperature is 55°C. When making the shape memory alloy artificial muscle spring 7, it is first processed into a short and thick compression spring shape with a height of 2.5 mm when the temperature is higher than 55 °C, and then artificially deformed into a height of 5.0 mm when the temperature is lower than 55 °C slim compression spring shape.

[0030] The bionic dolphin skin is also applied to a certain type of motor boat (length 3.2 m) that is active in the offshore all year round, and the laying length of the bionic dolphin skin is 2.0 m. First, according to the usual working environment of this type of motorboat (seawater temperature 20°C, density 1.025×10 3 kg / m 3 , The dynamic viscosity is 1.002×10 -3 kg / m s) to calcul...

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Abstract

The invention relates to the technical field of engineering bionics, in particular to a bionic dolphin skin based on a shape memory alloy artificial muscle. The bionic dolphin skin based on the shape memory alloy artificial muscle comprises a supporting base, a hardened conducting layer, a flexible resin layer, a flexible conducting layer, a smooth rubber layer and artificial muscle stretching and contraction units, wherein each artificial muscle stretching and contraction unit comprises a shape memory alloy artificial muscle spring, a traction head, a two-section type electric heating rod and a connecting lead. Compared with the prior art, the shape memory alloy artificial muscle is used for imitating elastic mastoid processes in a dolphin skin structure; the unique material characteristic of the shape memory alloy artificial muscle is used for achieving protrusion or pit type deformation of the bionic dolphin skin, wherein the unique material characteristic of the shape memory alloy artificial muscle is that the two-way memory effect is achieved through driving of the transformation temperature of the shape memory alloy artificial muscle; the flexible working mechanism of the bionic dolphin skin is more sensitive and controllable, and a beneficial example is provided for development of the engineering bionics technology and especially the bionic anti-drag epidermis manufacturing technology in the aspect of the structural and functional bionics.

Description

technical field [0001] The invention relates to a bionic dolphin skin, in particular to a bionic dolphin skin based on a shape memory alloy artificial muscle, and belongs to the technical field of engineering bionics. Background technique [0002] Effectively reducing the surface resistance of aircraft to improve speed, maneuverability, endurance and fuel efficiency is of great significance to national economy and national defense security. High-speed underwater organisms such as dolphins, sharks, and tuna undoubtedly provide humans with extremely valuable engineering bionic models. The targeted development of low-resistance, high-efficiency bionic drag-reducing skin has become a current research hotspot and difficulty. [0003] Dolphins are the champions of swimming in the ocean, with a speed of 70-100 kilometers per hour. As early as 1936, British scientist Gray discovered that the swimming speed of dolphins had far exceeded the limit of their muscle strength, and then pr...

Claims

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Application Information

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IPC IPC(8): B63B1/32
CPCY02T70/10
Inventor 韩鑫靳印凯陈亮亮邱先慧
Owner SHANDONG UNIV OF TECH
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