摘要
为进行复合材料协同多尺度渐进损伤的分析,提出一种基于高保真通用胞元法和有限元相结合的方法。推导高保真通用胞元的计算格式,并通过一个典型周期性单胞的分析结果与有限元结果的对比,验证所建模型的精确性。采用所建立的方法对一个单向复合材料缺口试验件的渐进损伤过程进行协同多尺度模拟,揭示试验件宏观性能衰减与微观尺度损伤演化之间的内在联系。结果说明:该方法适用于复合材料多尺度分析。
A method combining HFGMC and FEM was developed to simulte the progressive damage of composite material at multi-scales synergistically.The computational formulars of HFGMC were deduced,and their precision was verified by the comparison of the reserch results between unicellulars and finite elements in a typical periodic unit cell.The proposed combination method was used to simulate the progressive damage of a unidirectional composite notched panel at both macroscale and microscale synergistically,which reveals the intrinsic connections between macroscale mechanical degradation and microscale damage evolution of the composite.The results prove the validity of the proposed method in multiscale analysis of composite material.
作者
白连乙
周储伟
马伟杰
BAI Lianyi;ZHOU Chuwei;MA Weijie(College of Astronautics,Nanjing University of Aeronautice and Astronautice,Nanjing 210016,China)
出处
《机械制造与自动化》
2023年第1期91-94,共4页
Machine Building & Automation
基金
国家自然科学基金项目(11872205)。
关键词
高精度通用胞元
复合材料
多尺度分析
渐进损伤
high precision universal cell
composite materials
multi-scale analysis
progressive damage