【摘要】 碳纤维纱线编织过程中会因纱线张力波动大,导致其在变应力作用下发生局部断裂起毛问题。为了降低纱线张力波动,使碳纤维纱线在合适的编织张力下完成编织,需要优化碳纤维纱线用编织锭子结构参数。根据编织工艺和锭子结构,分阶段建立纱线张力模型;根据粒子群优化算法原理和优化目标,选择结构参数和优化目标函数,并确定结构参数优化范围。通过MatLab软件完成碳纤维纱线用编织锭子结构参数的优化,仿真结果表明:通过调节碳纤维纱线用编织锭子各阶段起始角度、线坠长度、弹簧刚度和预压缩长度,碳纤维纱线张力可以满足加工要求,且优化后放纱阶段纱线张力波动率相比于单补偿编织锭子下降了18.13%。更多还原

【Abstract】 During the braiding process of carbon fiber yarn, the tension of the yarn fluctuates obviously, which causes the problem of local fracture and fluffing under the action of variable stress. In order to reduce the fluctuation of the yarn tension and braid the carbon fiber yarn under a proper braiding tension, it is necessary to optimize the structural parameters of the braiding carrier for the carbon fiber yarn. According to the braiding process and the carrier structure, the yarn tension model was established in stages; according to the principle of particle swarm optimization algorithm and the optimization goal, the structural parameters and the optimization objective function were selected, and the optimization range of the structural parameters were determined. The optimization of the structural parameters of the braiding carrier for carbon fiber yarn was completed with MatLab software. The simulation results show that by adjusting the starting angle, thread length, spring stiffness and pre-compressed length of the braiding carrier for carbon fiber yarn, the tension of the carbon fiber yarn can be satisfied with processing requirements, and the yarn tension fluctuation rate after the optimization of the release stage is 18.13% lower than the experimental result of the single compensation braiding carrier.更多还原