Super-elastic tension structure of octahedral unit truss

Abstract

The invention provides a super-elastic tension structure of an octahedral unit truss. The super-elastic tension structure is formed by an octahedron variable geometry truss and super-elastic tension lines; the octahedron variable geometry truss is formed by one or more than one octahedral basic unit; every octahedral basic unit is formed by twelve truss extensible rods of equal length and six ball joints; every two adjacent octahedral basic units share one surface; the three ball joints of every triangle formed on the surface of the corresponding octahedral basic unit are connected with each other through three of the super-elastic tension lines, wherein the three super-elastic tension lines are gathered at a central point of the triangle and connected with a plane hook; every octahedral basic unit is located in the compression state through the super-elastic tension lines, only the pressure is applied to the truss rods, and the tension is not applied to the truss rods. According to the super-elastic tension structure of the octahedral unit truss, the structure is simple, the machining is convenient, a tensioning device is easy to install, the node size is small, the force transfer path is clear, and the super-elastic tension structure can be applied to variable geometry truss structures of the field such as buildings, bridges and the aerospace.

Description

technical field [0001] The invention relates to the technical field of new material structures, in particular to an octahedral unit truss superelastic tension structure applicable to the fields of aerospace, construction, bridge engineering and the like. [0002] Background technique [0003] The variable geometry truss is a relatively new form of aerospace structure, which can be used for the load-bearing structure of the spacecraft control arm or the space crane arm. Compared with the traditional mechanical arm, the variable geometry truss extension arm has the advantages of flexible movement, small mass, high rigidity and high storage rate. [0004] The regular polyhedron is the basic unit of the variable geometry truss, and the regular octahedron is the most commonly used unit form of the variable geometry truss, because the space truss unit composed of the regular octahedron is a just statically definite system with no internal mechanism number and no hyperstatic defin...

AI Technical Summary

Problems solved by technology

[0006] The invention discloses a superelastic tension structure of an octahedral unit truss, which solves the problems of complex node structure and large node size of the octahedral unit variable geometry truss, thereby reducing the self-weight of the truss

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