Space group R3 symmetry-based three-dimensional woven material and weaving method thereof

Abstract

The invention discloses a space group R3 symmetry-based three-dimensional woven material and a weaving method thereof. The woven geometric structure of the woven material is a continuous yarn structure which is formed by extending and weaving in a three-dimensional space, yarn sections in representative volume units of the woven geometric structure meet the symmetry of points described by the space point group C3, the woven structure presents the three-dimensional woven fabric which interweaves with the three-dimensional space obtained by the translation symmetry operation described by the space group for the representative volume unit. According to the woven material, by researching the technological feasibility and predicting the fiber volume percentage of the corresponding three-dimensional fabric, the new three-dimensional woven material variety with the fiber volume percent content higher than that of the traditional three-dimensional woven material can be obtained, the geometric structure is more stable, and the corresponding composite material has better mechanical performance compared with the traditional three-dimensional composite material.

Description

technical field [0001] The invention relates to a three-dimensional braided material, in particular to a three-dimensional braided material based on the symmetry of space group R3. Background technique [0002] Three-dimensional braided composites have attracted extensive attention in aerospace, defense, and medical industries due to their excellent mechanical properties. At present, most studies focus on two weaving methods, the four-step method and the two-step method. Due to the constraints of processing technology and other factors, the variety of three-dimensional braided composite materials is too small, the processing efficiency is low, and the process cost is high, which is not conducive to optimizing the performance of composite materials. In practical engineering applications, two-step three-dimensional braided composite materials are not widely used. In order to obtain 3D braided composite materials with better comprehensive performance, it is urgent to develop m...

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