基于m积分的界面材料损伤评估

IF 4 2区 工程技术 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Jun Li, Xiaoman Feng, Junling Hou, Yaohua Liu, Binglei Wang
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引用次数: 0

摘要

本文用m积分研究了界面材料的损伤问题。结果表明,m积分的积分路径可以跨越材料界面。采用域积分法实现了m积分的数值计算。用解析解验证了模型的准确性。利用有限元方法探讨了影响界面材料m积分的因素。研究了弹性模量比、缺陷和载荷对m积分的影响,提出了一种基于m积分的等效损伤标定方法。结果表明,弹性模量比一旦超过一定阈值,就不再是影响m积分的主要因素。弹性问题的等效缺陷与原缺陷形态和弹性模量比有关,与外载荷无关。该研究对界面材料损伤水平的标定、结构损伤容限设计和完整性评估具有重要意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Damage evaluation of interfacial materials based on M-integral
The paper investigates the issue of damage in interfacial materials using M-integral. It demonstrates that the integration path of M-integral can cross the material interface. The numerical calculation of M-integral is realized by using domain integral method. The accuracy of the model was verified using analytical solutions. The factors affecting the M-integral of the interfacial material are explored with the help of finite elements. The study explores the effects of elastic modulus ratio, defects, and load on the M-integral, and proposes an equivalent damage calibration method based on the M-integral. The results suggest that once the elastic modulus ratio exceeds a certain threshold, it is no longer the primary factor influencing the M-integral. The equivalent defect for elastic problems is linked to the original defect configuration and elastic modulus ratio, and is independent of the external load. This study is important for calibrating damage levels of interfacial materials, designing for damage tolerance in structures, and assessing integrity.
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来源期刊
International Journal of Damage Mechanics
International Journal of Damage Mechanics 工程技术-材料科学:综合
CiteScore
8.70
自引率
26.20%
发文量
48
审稿时长
5.4 months
期刊介绍: Featuring original, peer-reviewed papers by leading specialists from around the world, the International Journal of Damage Mechanics covers new developments in the science and engineering of fracture and damage mechanics. Devoted to the prompt publication of original papers reporting the results of experimental or theoretical work on any aspect of research in the mechanics of fracture and damage assessment, the journal provides an effective mechanism to disseminate information not only within the research community but also between the reseach laboratory and industrial design department. The journal also promotes and contributes to development of the concept of damage mechanics. This journal is a member of the Committee on Publication Ethics (COPE).
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