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Bamboo-like truss structure

A truss structure, imitating bamboo technology, applied in the direction of truss structure, truss beams, joists, etc., can solve the problems of assembly difficulty, affect the bending stiffness and strength of the structure, and form a smooth surface, so as to improve the stiffness and strength, strengthen the Effects of bending and radial compression resistance

Inactive Publication Date: 2013-12-25
NORTHWESTERN POLYTECHNICAL UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the outer contour of the structure is jagged, it is not conducive to forming a smooth surface by gluing the skin, and it also brings difficulties to the assembly between components; Rod element supports, which affect the overall bending stiffness and strength of the structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] This embodiment is a bamboo imitation truss structure, which consists of a cylindrical bus bar unit 1 , a cylindrical spiral curved bar unit 2 , a spiral broken line bar unit 3 and a radial bar unit 4 .

[0034] The rod unit along the axial direction of the imitation bamboo truss structure is composed of a cylindrical generatrix rod unit 1, a cylindrical spiral curve rod unit 2 and a spiral broken line rod unit 3, and the radial rod unit 4 is connected by a straight line segment to the spiral curve rod in the same cross section The intersection of the element with the bus bar element is formed.

[0035] Cylindrical bus bar units 1 are evenly distributed on the cylindrical surface along the circumferential direction of the cylindrical surface, and the number of cylindrical bus bar unit segments is set to n, then n≥3.

[0036] The cylindrical spiral curved rod unit 2 is formed by spirally winding clockwise and counterclockwise along the cylindrical surface starting from t...

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Abstract

The invention relates to a bamboo-like truss structure, which consists of pole units composed of cylindrical busbar pole units, cylindrical spiral curve pole units and spiral broken line pole units along the axial direction of the structure, and pole units formed by connecting the intersection points of the spiral curve pole units and the busbar pole units located in one cross section by straight-line segments along the radial direction of the structure. Specifically, the cylindrical busbar pole units and the spiral curve pole units together ensure a contour as a smooth cylinder; the spiral broken line pole units strengthen the axial compression resistance and the anti-torsion performance of the structure; the radial pole units improve the radial compression resistance and the bending resistance of the structure. The invention is a columnar truss structure with high specific strength and high specific stiffness, and can meet the large span and lightweight demands of the components of modern aerospace vehicles, as well as effectively solves the problems of insufficient stiffness and strength of a columnar truss structure under the condition of a great slenderness ratio.

Description

technical field [0001] The invention relates to a columnar imitation bamboo truss structure, which belongs to the technical field of structure design. Background technique [0002] The imitation bamboo truss structure is a columnar truss structure that is bionically designed by referring to the macroscopic characteristics of natural bamboo. The natural plant bamboo is a kind of bamboo joints distributed along the axial direction, and the radial partition frame of the bamboo joints and the bamboo tube part form a vertically and horizontally related whole structure. Tests have shown that the radial spacers of the bamboo joints can increase the radial bearing capacity of the bamboo tube by three times, greatly improving the rigidity and strength of the structure. The columnar truss structure is a form of truss whose outer contour is columnar. Due to its high specific stiffness and specific strength, the columnar truss structure is widely used in the aerospace field. The repre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C3/02
Inventor 赖长亮刘闯王俊彪范玉斌陈辉
Owner NORTHWESTERN POLYTECHNICAL UNIV
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