用于轮胎的聚合物复合材料和织绳的循环测试
Jan Krmela1, Michal Michna1, Zdeněk Růžička1
1Faculty of Mechanical Engineering, Jan Evangelista Purkyně University in Ustí nad Labem, 400 96 Ustí nad Labem, Czech Republic.
Polymers
|May 27, 2023
概括
对于聚合物复合材料和聚胺66 (PA66) 绳子,新的低循环测试方法得到了验证. 这些方法为计算式轮胎模拟提供了关键的材料参数,增强了材料特性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 聚合物科学 聚合物科学
背景情况:
- 聚合物复合材料和聚胺66 (PA66) 绳是重要的钢筋材料.
- 准确的材料参数对于计算式轮胎模拟至关重要.
- 现有的测试方法可能无法完全捕捉这些材料在循环负荷下复杂的行为.
研究的目的:
- 为了验证聚合物复合物和PA66电缆的新型低循环测试方法.
- 描述材料参数,用于计算式轮胎模拟.
- 为了评估温度对PA66电缆的机械性能的影响.
主要方法:
- 开发用于低循环测试聚合物复合材料和PA66电缆的实验方法.
- 在20°C和120°C的温度下进行循环加载,保持60秒的时间.
- 使用视频延伸计技术进行精确的应变和应力测量.
- 遵守DIN 53835-13标准,用于初始的织绳索测试周期.
主要成果:
- 确定第四个周期是聚合物复合材料的稳定周期,第四和第五个周期之间的应力变化为1.6%.
- 获得了复合材料和PA66电缆的真实应力-应力 (延长) 和力-应力依赖性.
- 建立了复合材料的应力和循环环之间的二度多项式关系.
- 开发了一个简单的关系来描述织绳的循环末端的力值.
结论:
- 开发的测试方法有效地描述了用于计算轮胎模拟的材料参数.
- 温度显著影响PA66电缆的材料特性.
- 获得的数据为准确的轮胎外建模提供了宝贵的输入.
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