基于多尺度有限元模型的M50轴承环冷变形的流动行为分析
Wenting Wei1,2,3,4, Zheng Liu1,2, Qinglong Liu5
1Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China.
Materials (Basel, Switzerland)
|January 11, 2025
概括
这项研究模拟了M50轴承钢冷环,揭示了应力均性和渐进的应变增加. 中等尺度分析显示,在水泥石中压力度最高,在水泥石之间铁矿中塑料压力最高.
科学领域:
- 材料科学与工程 材料科学与工程
- 机械工程 机械工程
- 部落学 (tribology) 是一个学科.
背景情况:
- 了解M50轴承钢在冷环过程中的微结构行为,对于预测材料性能和优化制造工艺至关重要.
- 现有的模型可能无法完全捕捉严重塑性变形下铁和水泥相之间的复杂的多尺度相互作用.
研究的目的:
- 建立和验证M50轴承钢冷环的多尺度有限元模型.
- 在冷过程中调查宏观和中大尺度的流动行为和应力/应变分布.
主要方法:
- 采用纳米沉积实验,获取M50轴承钢的费里特单相参数.
- 基于M50.0.实际微观结构的代表性体积元素 (RVE) 模型的开发.
- 建立和验证用于冷环模拟的多尺度有限元模型.
主要成果:
- 宏观分析显示,滚动后应力分布均,等效塑料应力 (PEEQ) 逐步增加,赛道表现出最高的PEEQ.
- 介光学模拟显示了水泥石内部的应力度,峰值在铁矿-水泥石结点,在水泥石之间的铁矿矩阵中最高的PEEQ.
- 观察到,水泥石的变形遵循的是铁质矩阵,在辐射,轴向和周长位移方面具有特定的模式.
结论:
- 开发的多尺度有限元模型准确模拟了M50轴承钢的冷环.
- 该研究提供了对宏观和微观结构层面应力和应变局部化的详细见解,突出了水泥矿的关键作用.
- 了解这些微结构流动行为对于预测M50轴承组件的疲劳寿命和性能至关重要.
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