Three-dimensional woven material based on space group P*

Abstract

The invention relates to a three-dimensional woven material based on symmetry of a space group, the woven geometric structure of the woven material is the structure which extends and is woven in three-dimensional space in the form of continuous yarns, the yarn section in a representative volume unit in the woven geometric structure can meet the symmetry of points described in a space point group,and the woven structure integrally shows three-dimensional woven fabric, which is mutually interwoven in the three-dimensional space and obtained by using translation symmetrical operation described by the space group to carry out translation on the representative volume unit. The new three-dimensional woven geometric structure which meets the symmetry of the space group is deduced via the woven material by taking the representative volume unit capable of meeting the symmetry of the point group as a basic structure unit, and a new three-dimensional woven material type with excellent geometricstructure and performance can be obtained by studying the process feasibility and predicting the fiber content, by volume percentage, of the corresponding three-dimensional woven fabric. An array of the woven material adopts the shape of a regular hexagon, so that the motion trajectory of a yarn carrier is convenient to realize, and the production is easy to organize.

Description

technical field [0001] The invention relates to a three-dimensional braided material, in particular to a space group based Symmetrical three-dimensional woven material. Background technique [0002] Three-dimensional braided composites have attracted extensive attention in aerospace, defense, and medical industries due to their excellent mechanical properties. Due to the constraints of processing technology and other factors, there are too few varieties of three-dimensional braided composite materials, low processing efficiency and high process cost. In order to obtain 3D braided composites with better comprehensive performance, it is urgent to develop more 3D weaving processes. At present, most researches focus on two weaving methods, four-step method and two-step method, while the research on the prediction of three-dimensional weaving method is still in its infancy. [0003] Crystals with different lattice structures exhibit different properties, and crystal geometric...

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Problems solved by technology

However, as a new three-dimensional braided material, the process

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