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利用数值模拟分析的方法研究了铺层角度、厚度、顺序以及对称性对碳纤维复合材料传动轴抗扭性能的影响规律。研究发现结构抗扭截面系数在单向铺层方向为接近0°、45°及接近90°时较高,且随着铺层厚度增加而增大;扭转刚度则在40°~70°较好。在接近0°和接近90°铺层间铺设45°铺层能提高零件抗扭性能;与反对称铺层方案相比对称铺层方案更有利于零件承受扭矩。将优化铺层方案应用在某型号风机传动轴的设计中,试验证明能够满足使用要求并达到节约原材料的目的。
The effect of ply angle, thickness, order and symmetry on the torsional behavior of carbon fiber composite drive shaft was studied by means of numerical simulation. The results show that the torsional section coefficient of the structure is higher when the unidirectional ply direction is close to 0 °, 45 ° and close to 90 °, and increases with the increase of ply thickness. The torsional stiffness is better at 40 ° ~ 70 ° . Laying 45 ° plies between 0 ° and near 90 ° ply improves part torsional resistance and symmetrical plying scheme is more favorable for part torques compared to the antisymmetrical ply. The application of optimized laying program in the design of a certain type of fan drive shaft, the test proved to meet the requirements and achieve the purpose of saving raw materials.