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| 基于TPMS胞元的相变-金属复合结构散热拓扑优化设计 |
| Topological optimization design of heat dissipation of phase-change metal composite structures based on TPMS cells |
| 投稿时间：2024-10-14 修订日期：2024-12-24 |
| DOI： |
| 中文关键词: 相变材料 结构散热 拓扑优化 TPMS结构 双尺度优化 |
| 英文关键词:Phase change materials Structural heat dissipation Topological Optimization TPMS structure Two-scale optimization |
| 基金项目: |
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| 摘要点击次数: 8 |
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| 中文摘要: |
| 随着电子器件向小型化和多功能化方向的发展，结构的散热需求迅速增加。相变材料在相变过程中能够吸收大量热量，改善温度调控效果，但其较低的导热率限制了应用范围。为此，本文基于三重周期最小曲面（TPMS）单胞，分析其等效属性与金属骨架体积分数之间的关系，并在此基础上提出了宏微观双尺度优化设计方法。通过密度法，以最小化热柔度为目标，对金属骨架的体积分数分布进行优化。数值结果表明，与相同金属用量的翅片结构相比，该方法在稳态和瞬态传热条件下显著降低了芯片的最高温度和平均温度。研究结果验证了该优化模型的有效性，为复合材料散热结构设计提供了理论依据。 |
| 英文摘要: |
| As electronic devices become more miniaturized and multifunctional, the demand for effective heat dissipation in structures has significantly increased. Phase change materials can absorb substantial heat during phase transitions, aiding in temperature regulation. However, their low thermal conductivity limits their broader application. To address this, this paper analyzes the relationship between the equivalent properties of triple periodic minimal surface (TPMS) unit cells and the volume fraction of the metal skeleton. Building on this, a macro-micro dual-scale optimization design method is proposed. Using a density-based approach, the volume fraction distribution of the metal skeleton is optimized with the objective of minimizing thermal compliance. Numerical results demonstrate that, compared to fin structures with the same amount of metal, this method significantly reduces both the maximum and average temperatures of the chip under steady-state and transient heat transfer conditions. The findings validate the effectiveness of the proposed optimization model and offer a theoretical foundation for designing composite heat dissipation structures. |
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