WEAVING METHOD OF THREE-DIMENSION PRECAST BODY HAVING GRADIENT STRUCTURE

摘要

A method for weaving a three-dimensional preform having a gradient structure is provided. The method mainly includes the following steps: according to a service requirement of a required composite material parts, decomposing and determining performance requirements of different functional locations (1, 3) of the parts; selecting guide sleeves (4, 6) and fibers of each of the functional locations (1, 3) and designing a parameter; selecting guide sleeves and fibers of a transition area (2) and designing a parameter, thereby implementing smooth transition of the transition area (2); determining a weaving sequence according to layouts of the guide sleeves and winding manners of the fibers in the functional locations (1, 3) and the transition area (2) to generate a fiber iterative instruction for layer-by-layer weaving; arranging guide sleeves according to design requirements of the functional locations (1, 3) and the transition area (2) to generate a guide sleeve array; and driving a weaving mechanism to select different fibers for subarea weaving layer by layer to obtain the three-dimensional preform having a gradient structure. The method can realize the weaving of the composite material three-dimensional preform having the gradient structure, and is particularly applied to researching a preform of a part on which different portions have different loading conditions.