Deformation regulation and control method of deployable antenna back frame structure based on 4D printing
A structural deformation, 4D technology, applied in geometric CAD, instruments, other home appliances, etc., can solve the problems of high manufacturing cost and complex back frame structure, and achieve the effect of low manufacturing cost, maintaining shape and surface accuracy, and easy control.
Pending Publication Date: 2022-05-27
ZHEJIANG UNIV OF TECH
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Problems solved by technology
The traditional back frame structure is composed of hinges, trusses, and torsion springs. The advantages are high control precision and fast driving speed. The disadvantages are the complex structure of the back frame and high manufacturing cost. Therefore, we are looking for a back frame deformation control with simple design and convenient control. method is required
Method used
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[0046] as Figure 1 Shown, in order to prepare the completed expandable antenna back frame structure, comprising 23 antenna back frame arms, 23 hinges 4, a main pole 5 and base 6; the base 6 has a circular top surface, the center of the circular top face is provided with a main pole perpendicular to the circular top face 5; the circular top surface along the circumferential direction is evenly distributed 23 hinges 4, the lower end of each antenna back frame arm is hinged through a hinge 4 reaming on the base 6, so that several antenna back frame arms around the main pole 5 along the circumferential uniform distribution. The antenna back frame arm includes an outer rod 1, an intermediate hinge 2 and an inner rod 3; the lower end of the outer rod 1 is hinged corresponding to a hinge 4, and the upper end of the outer rod 1 is hinged through the middle hinge 2 hinges the lower end of the outer rod 1, and the upper end of the outer rod 1 is not in contact with each other and is evenly ...
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The invention discloses a 4D printing-based deployable antenna back frame structure deformation regulation and control preparation method. The method comprises the following steps: determining an initial folding state and a target unfolding state of a 4D printing rod group of the deployable antenna back frame structure; presetting the external change temperature, the external load and the material distribution of the 4D printing rod group; an optimization model of the 4D printing rod group is established, and the optimal external change temperature, external load and material distribution of the 4D printing rod group are obtained; 3D printing is carried out to obtain a 4D printing rod group, and a deployable antenna back frame structure is built. The unfoldable antenna back frame structure is low in manufacturing cost, simple in structure and easy to control, multiple materials are applied to 4D printing and printed to build the unfoldable antenna back frame structure, and deformation regulation and control of the unfoldable antenna back frame structure can be achieved under the conditions of external loads and external temperature changes.
Description
Technical field [0001] The present invention relates to a deformation regulation method of a functional surface, specifically to a deformation regulation method based on a 4D printable antenna back frame structure. Background [0002] Complex functional surface refers to the complex surface that can realize some specific physical functions such as light, electricity, heat, magnetism, etc., and is an important infrastructure for complex mechanical and electrical equipment such as reflective surface antennas, optical telescopes, and super-large hydraulic platforms, and the structural form and functional accuracy of functional surfaces are important guarantees for the performance of complex mechanical and electrical equipment. Functional surfaces tend to have multiple states of motion, which are regulated by the back frame structure behind the surface. The traditional back frame structure is composed of hinges, trusses and torsion springs, etc., the advantage is high control accurac...
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IPC IPC(8): B29C64/386B29C64/393B33Y50/00B33Y50/02G06F30/10B29L31/34G06F113/10G06F119/08
CPCB29C64/386B29C64/393B33Y50/00B33Y50/02G06F30/10G06F2113/10G06F2119/08B29L2031/3456
Inventor 彭翔王俊王南航吴化平李吉泉姜少飞景立挺
Owner ZHEJIANG UNIV OF TECH