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沃罗诺伊细胞有限元素方法用于复合材料的导热分析
Siqi Chen1, Changhao Hu2, Jingjie Tian3
1Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, 650500, China.
Scientific reports
|May 27, 2024
概括
一种新的沃罗诺伊细胞有限元素方法 (VCFEM) 准确地模拟了粒子增强复合材料中的热传导. 这种方法为增强材料分析提供全场热流和有效导热率.
科学领域:
- 计算材料科学科学 计算材料科学
- 热传递分析热传递分析
- 复合材料工程 复合材料工程
背景情况:
- 精确的粒子增强复合材料的热分析对于性能预测至关重要.
- 传统方法在精确捕捉异质材料中复杂的传热现象时可能面临挑战.
研究的目的:
- 提出一种新的Voronoi细胞有限元素方法 (VCFEM) 解决粒子增强复合材料中的导热问题.
- 开发一种直接接近热流的配方,并插入温度以提高准确性.
主要方法:
- 在VCFEM框架内假设流量混合配方.
- 在矩阵和纳入阶段的热流的独立近似.
- 使用拉格朗日乘数来缓解热平衡条件,用于两变量函数 (热流和温度).
主要成果:
- 成功计算了全场热量流量分布.
- 精确确定复合材料的有效导热率.
- 通过数值示例验证方法的可行性和有效性.
结论:
- 假设流量混合配方的拟议VCFEM为复合材料的热分析提供了强大的和有效的方法.
- 该方法为传热行为和材料特性提供了宝贵的见解.
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