用VCFEMEM模拟空洞颗粒增强复合材料的界面解接
1Engineering Mechanics Department of Kunming, University of Science and Technology, Kunming, 650500, China.
Scientific reports
|March 22, 2024
概括
一种新的Voronoi细胞有限元素方法 (VCFEM) 提高了模拟空心微球复合材料的计算效率. 这种方法准确地模拟了接口解接,改进了材料故障分析.
科学领域:
- 材料科学 材料科学 材料科学
- 计算力学 计算力学 计算力学
- 复合材料 复合材料 复合材料
背景情况:
- 空洞玻璃微球提高复合材料的机械性能,但接口解接会导致材料故障.
- 传统的有限元方法 (FEM) 需要过多的网格来模拟这些复合材料,从而增加计算成本.
- 准确模拟界面解接对于理解复合材料故障机制至关重要.
研究的目的:
- 开发一种计算效率高的沃罗诺伊细胞有限元件方法 (VCFEM),用于模拟空洞颗粒增强复合材料.
- 准确地建模和分析这些材料中的界面解接.
- 为了研究界面解接和空洞颗粒壁厚度对复合材料性能的影响.
主要方法:
- 建立一个二维的沃罗诺伊细胞有限元素模型.
- 对于空洞颗粒增强复合材料的剩余能量概括函数的导数.
- 使用拟议的VCFEM计算接口解锁.
- 与商业软件 (MARC,ABAQUS) 相比,VCFEM的验证.
主要成果:
- 与传统的FEM相比,拟议的VCFEM显著提高了计算效率.
- VCFEM精确模拟了界面解接及其对复合材料机械性能的影响.
- 模拟结果表明VCFEM在预测材料故障方面的有效性.
- 该研究分析了界面解接和变化的空洞颗粒壁厚对结构损伤的影响.
结论:
- VCFEM提供了一种高效和准确的方法来模拟空心微球复合材料.
- 这种方法为界面解锁的机制及其后果提供了宝贵的见解.
- VCFEM是设计和分析先进复合材料的一个有前途的工具.
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