在铁基粉末的高速压缩中对密集过程的有限元分析
Miao Liu1, Yan Cao1, Chaorui Nie2
1School of Mechatronic Engineering, Xi'an Technological University, Xi'an 710021, China.
Materials (Basel, Switzerland)
|July 13, 2024
概括
有限元素建模精确模拟了在高速压缩 (HVC) 过程中的铁基粉末金密度化. 这项研究开发了一个最佳的紧缩方程,并分析了对密度分布的冲击效应.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 计算机建模 计算建模
背景情况:
- 粉末金对于制造先进材料至关重要.
- 高速压缩 (HVC) 在粉末凝固中提供了独特的优势.
- 了解HVC过程中铁基粉末的密度化行为对于过程优化至关重要.
研究的目的:
- 开发和验证一个有限元模型来模拟HVC过程中铁基粉末的密集.
- 分析冲击速度和能量对密集过程的影响.
- 为了推导出一个最佳的经验压缩方程,以铁为基础的粉末HVC.
主要方法:
- 使用了弹性-塑料理论和Shima-Oyane模型.
- 使用MSC Marc 2020软件进行了有限元分析.
- 数字模拟与实验结果进行了验证.
主要成果:
- 有限元模型准确地预测了HVC期间的密集过程.
- 该研究获得了基于铁的粉末高速冲击成型的最佳经验压缩方程.
- 分析了撞击速度和能量对相对密度分布的影响.
结论:
- 开发的有限元模型可靠地模拟铁基粉末的HVC.
- 由此得出的压缩方程可以指导优化HVC流程.
- 冲击参数显著影响密度分布和紧的最终特性.
相关概念视频
01:22Compacting Factor test
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The compacting factor test is a method used to assess the workability of concrete. It is especially suitable for concrete mixes containing aggregates up to one and a half inches in size. This test involves specialized equipment consisting of two truncated cone-shaped hoppers and a cylinder, all with polished interior surfaces to minimize friction.
The procedure begins by placing concrete into the upper hopper without any compaction. Once filled, the bottom door of this hopper is opened,...
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01:15Fineness of Cement
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The fineness of cement directly influences the rate of hydration, as the hydration begins at the surface of the cement particles. In addition to hydration, the fineness of cement is vital for various properties of concrete including workability, gypsum requirement, and long-term behavior. The fineness of cement is represented in terms of the specific surface of cement which is typically measured in square meters per kilogram, with several methods available for this determination.
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Direct...
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