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基于Halpin-Tsai方程,引入纤维取向因子,建立了芳纶浆粕纤维增强气压砂轮内橡胶层模量预测模型,描述了气压砂轮基体在动态变化过程中的应力-应变关系。通过ANSYS仿真分析,得出了气压砂轮在不同纤维体积分数下的应力-应变规律,证实了芳纶浆粕纤维增强方法可以改善砂轮基体接触形变缺陷问题。采用混炼法制备了芳纶浆粕纤维增强的橡胶基体,观测到了多维网状纤维微观分布结构,并采用拉伸试验验证了弹性模量预测模型。设计了芳纶浆粕纤维增强气压砂轮加工试验。证明了经芳纶浆粕纤维增强后的气压砂轮可以迅速提升工件表面质量,并使划痕损伤获得一定的控制。
Based on the Halpin-Tsai equation, the fiber orientation factor was introduced to establish the prediction model of the rubber layer modulus in the aramid pulp reinforced pneumatic wheel, and the stress-strain relationship of the pneumatic wheel matrix in the dynamic change was described. Through the ANSYS simulation analysis, the stress-strain law of pneumatic wheel under different fiber volume fraction was obtained. It was confirmed that the fiber-reinforced aramid pulp can improve the contact deformation of the wheel base. Aramid fiber reinforced rubber matrix was prepared by a mixing method. The microstructure of multidimensional reticular fibers was observed. The elastic modulus prediction model was verified by tensile test. Aramid pulp fiber reinforced pneumatic grinding wheel was designed. Proved by the aramid pulp fiber reinforced pressure wheel can quickly improve the quality of the surface of the workpiece, and scratches get a certain degree of control.