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热运行器变形的数值模拟
Jae Sung Jung1, Sun Kyoung Kim1
1Department of Mechanical System Design Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea.
Micromachines
|July 29, 2023
概括
热流体系统中的热变形可能会导致泄漏和故障. 这项研究模拟了这些效应,发现热膨胀比融压力更大的风险,并提供设计指导,以提高可靠性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 制造过程 制造过程 制造过程
背景情况:
- 热流系统在注塑中至关重要,以实现高效的聚合物加工.
- 运行压力,包括热和机械负载,可能导致系统故障,如泄漏和过早磨损.
- 了解和预测这些变形对于提高系统寿命和性能至关重要.
研究的目的:
- 在操作过程中模拟热流体集散体和喷嘴组件的热力学变形.
- 确定变形的主要驱动因素及其对系统完整性的影响.
- 提供可操作的设计建议,以提高热流系统的可靠性.
主要方法:
- 使用合热和机械有限元素分析 (FEA) 模型.
- 为计算效率开发了一套简化的边界条件.
- 在运行热量和化压力负载下分析了变形模式.
主要成果:
- 热变形被确定为潜在的灾难性故障和泄漏的主要原因.
- 发现压引起的变形明显较小,不超过热变形的12%.
- 模拟结果突出了易受热应力和应变的关键区域.
结论:
- 热膨胀是热流系统的关键设计考虑因素.
- 与热效应相比,融化的压力对整体变形的影响较小.
- 该研究的发现和建议可以指导设计更坚固,更可靠的热流管集散器和喷嘴组件.
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