模拟尺度沉积对注射成型中热传递的影响
Béla Zink1,2, Anna Héri-Szuchács1,2, Szabolcs Hajagos1,2
1Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, 1111, Hungary.
Scientific reports
|April 22, 2025
概括
增材制造能够在注塑模具中实现先进的合规冷却. 一个新的模型预测了石灰和腐蚀等沉积物如何降低冷却效率,有助于预测性维护.
科学领域:
- 制造业 工程 制造工程
- 材料科学 材料科学 材料科学
- 热力工程是热力工程中的一个.
背景情况:
- 增材制造 (AM) 在注塑模具中允许复杂的合规冷却通道,以提取优质的热量.
- 沉积物 (腐蚀,灰) 随着时间的推移降低了冷却通道的性能,降低了传热效率.
- 对沉积效应的准确建模对于保持模具性能至关重要.
研究的目的:
- 开发一种通用有限元模型,用于预测冷却道沉积物对注塑模具冷却效率的影响.
- 为了评估传统和合规冷却通道中的导热率和沉积层的厚度.
- 为优化冷却系统提供一个工具,并使注塑模具能够进行预测性维护.
主要方法:
- 开发有限元模型来模拟冷却通道内的各种沉积场景.
- 对沉积层的导热性和厚度的评估.
- 验证一种通用模型,用于预测不同模具材料和沉积类型的冷却效率.
主要成果:
- 开发的通用模型准确地预测了各种材料和任意沉积特征的注塑模具的冷却效率.
- 该模型量化了沉积物厚度和导热率对传热的影响.
- 具有预测模具性能变化和预测性维护计划的能力.
结论:
- 一个通用模型有效地预测了因沉积而导致的合规冷却通道的性能退化.
- 这种建模方法有助于优化注塑模具冷却系统.
- 这些发现对于预测性维护和确保长期模具性能至关重要.
相关概念视频
Design Example: Creating a Hydraulic Model of a Dam Spillway
79
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
79
Typical Model Studies
155
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
155
Modeling and Similitude
124
Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
124


