X-IGA用于正极管材料裂生长的X-IGA
Mohammed Berrada Gouzi1, Ahmed El Khalfi1, Sorin Vlase2,3
1Faculty of Science and Technology, Sidi Mohamed Ben Abdellah University, Fez 30000, Morocco.
Materials (Basel, Switzerland)
|August 10, 2024
概括
一种新的数值方法,扩展的同立方分析,准确模拟复合材料的裂生长. 这种方法提供了可靠的应力强度因子预测,与已知方法 (如扩展有限元素方法) 相比.
科学领域:
- 计算力学是计算力学.
- 材料科学是一种材料科学.
- 断裂力学 断裂力学 断裂力学
背景情况:
- 复合材料容易发生裂传播,影响结构完整性.
- 精确模拟裂生长对于预测材料故障至关重要.
- 现有的方法,如扩展的有限元素方法 (X-FEM) 显示承诺,但可以是计算密集型.
研究的目的:
- 引入和验证一种新的数值方法,扩展的同立方分析 (X-IGA),用于模拟单向复合材料的裂纹生长.
- 评估X-IGA在确定压力强度因子和T-压力的准确性.
- 为了比较X-IGA与扩展有限元素方法 (X-FEM) 的性能.
主要方法:
- 使用能量积分方法,斯特罗公式和异型弹性来制定治理方程.
- 使用开发的 MATLAB 代码进行应力和应力强度因子 (SIF) 的数值解决和后处理.
- 对一个基准问题进行验证:一个带有两个边缘裂的异型板.
主要成果:
- 拟议的扩展同立体分析 (X-IGA) 有效模拟复合材料的裂生长.
- 从X-IGA计算的压力强度因子 (SIF) 显示出与X-FEM结果的良好一致.
- 在比较X-IGA和X-FEM SIF值时,观察到0.0021 Pa·m^0.5的最小差异.
结论:
- 扩展异地测量分析 (X-IGA) 是一种可信且准确的方法,用于数值模拟单向复合材料的裂纹生长.
- X-IGA的高精度表明它有可能成为分析复合材料故障的X-FEM强大的替代方案.
- 这种方法可以提高各行各业复合结构的设计和安全性.
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