Auxetic structure based on wire-woven metal and fabrication method and appratus of the same

The present invention relates to an inflatable structure, and a manufacturing method based on woven metal. The manufacturing method comprising: forming a wire into a spiral; A step of weaving the helical wire provides a truss structure having a unit cell of tetrahedral or octahedral; The step of filling the interior of the unit cell in solid. And a step of performing the initial plastic deformation for inducing a rotation transformation to the connecting portion between the unit cell of the truss structure. The inflatable structure is being woven in a spiral wire is characterized in that the interior formed as a truss structure having a unit cell of the tetrahedral or octahedral filled with a solid material, the initial plastic deformation for the truss structure. The manufacturing method is the form of a weave of the truss structure having a unit cell of tetrahedral or octahedral with the metal wire is applied with a slight rotation of the tetrahedral or octahedral lattice and, after the initial plastic deformation, filling the inside with a separate solid by modifying in may provide a new porous expandable structure, it is advantageous to produce a large amount of formation of the expandable structure in a simple manner. In addition, the expandable structure is a regular truss structure of the metal wire part of the interior is filled by a solid fixed by being inherently buckling is not generated have a high strength, the tetrahedral or the octahedral lattice upon application of an external load connected to one another by the moment only occurs in having an expandable property that the deformation caused by rotation can be used for various engineering applications.