Characteristic of AFRP pneumatic wheel
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摘要: 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。Abstract: Based on Halpin-Tsai formula, direction factor was brought in for establishment of elastic modulus prediction model of fiber reinforced pneumatic wheel. By ANSYS simulation, rules of stress and strain of pneumatic wheel with different volume ratios of fiber were given. It is proved out that aramid fiber reinforced method can overcome defect of inner rubber deformation in contact process. By mixed refining method, pneumatic wheels reinforced by aramid fiber were achieved. Multi-dimension nets distribution of aramid fiber reinforced polymer (AFRP)were observed in micro-view. Elastic modulus prediction model was confirmed by traction experiments. After that, well-distributed aramid fiber pneumatic wheel machining experiments were carried out. The results show that aramid fiber reinforced method can improve surface roughness efficiently in pneumatic wheel machining process and decrease scratch damages of surface.
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Key words:
- pneumatic wheel /
- aramid fiber reinforced /
- elastic modulus /
- machining /
- scratch
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