Manufacture method of transformative shark-simulation anti-drag skin based on adjustable surface appearance and size
A technology of surface topography and manufacturing method, applied in ships, hydrodynamic characteristics/hydrostatic characteristics, hulls, etc., can solve the problem of affecting the drag reduction effect, the best applicable speed range, difficult to meet various application objects, grooves Issues such as fixed size
Inactive Publication Date: 2010-12-15
BEIHANG UNIV
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Problems solved by technology
CN101081532 and CN101487130 respectively disclose the method of using hot embossing method and electroforming method to make a high-fidelity imitation shark skin shape negative template. This method has high molding efficiency, low cost and good drag reduction effect, but the existing problems are: The appearance of the skin is formed by densely packed scales with grooves. The geometric elements such as the width of the grooves directly affect the best applicable speed range of the drag reduction effect. The scales with smaller groove widths are suitable for objects with higher speeds. Drag reduction, scales with larger groove width are suitable for drag reduction of objects with lower speed, while the groove size of shark surface scales is relatively fixed, which is difficult to meet the needs of various application objects
Method used
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Embodiment 1
[0079] Create deformable shark-like drag-reducing skin using mako sharks.
[0080] Step 1: Make a Sharkskin Creature Template
[0081] (A) Wash the skin of the purchased mako shark with deionized water for 5 times, then chemically fix the washed skin of the shark in 2.5% glutaraldehyde solution for 6-87 hours, and the chemical fixation temperature is 3°C to prepare the fixation test. like epidermis;
[0082] (B) Wash the fixed sample epidermis prepared by step (A) with deionized water for 5 times, then put the cleaned fixed sample epidermis into 50% ethanol solution for dehydration for 25min, and then dehydrate in 75% ethanol solution. Dehydrate in medium for 20 to 30 minutes, dehydrate in 95% ethanol solution for 25 minutes, and dehydrate in 100% ethanol solution for 25 minutes to obtain the epidermis of the dehydrated sample;
[0083] (C) Dry the skin of the dehydrated sample prepared in step (B) at 60° C. for 10 h to prepare a shark skin biological template, the surface m...
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The invention relates to a manufacture method of a transformative shark-simulation anti-drag skin based on adjustable surface appearance and size, which comprises the following four steps:(1) manufacturing a shark-skin biometric template; (2) manufacturing a silicon rubber elastic female template; (3) manufacturing a transformative shark-appearance-simulation anti-drag skin and researching a law;and (4) manufacturing the transformative shark-appearance-simulation anti-drag skin according to the requirements of application objects. The elastic female template manufactured by applying the invention has more than 95% of similarity to that of original shark skin appearance, the size of the skin surface appearance of the shark-simulation anti-drag skin manufactured by applying the invention can be adjusted according to the parameters of the common speed, the dielectricviscosity and the like of the application objects, and the anti-drag effect of the shark-simulation anti-drag skin approaches the optimum state. The manufacture method of a transformative shark-simulation anti-drag skin based on adjustable surface appearance and size has good utility value and wide application prospects in the field of simulation manufacture technology.
Description
(1) Technical field [0001] The present invention relates to a method for manufacturing a deformed imitation shark drag-reducing skin based on adjustable surface topography, more particularly, refers to a method for making deformed imitation shark skin by deforming and replicating the topography of low-resistance biological skin The invention relates to a preparation process of a topographic drag-reducing skin, which belongs to the technical field of bionic manufacturing. (2) Background technology [0002] Reducing the wall friction resistance between solid and liquid and saving energy consumption has always been the goal pursued by human beings. Effectively reducing the surface resistance of aircraft, pipelines and other transportation means to increase speed and reduce fuel consumption is of great significance to national economy and national defense security. The drag reduction method usually adopted is to attach a skin with drag reduction effect on the surface of the veh...
Claims
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IPC IPC(8): B63B1/34B29C39/42
CPCY02T70/121Y02T70/10
Inventor 张德远李翔郭明宇张鑫陈华伟
Owner BEIHANG UNIV
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