An analytical method for assessing the initiation and interaction of cracks in fused silica subjected to contact sliding

IF 4.2 2区工程技术 Q2 ENGINEERING, MANUFACTURING

Advances in Manufacturing Pub Date : 2023-05-19 DOI:10.1007/s40436-023-00444-2

Chang-Sheng Li, Na Zhao, Liang-Chi Zhang, Jian-Jun Ding, Lin Sun, Duan-Zhi Duan, Cheng-Wei Kang, Zhuang-De Jiang

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Abstract

Understanding the fracture behavior of fused silica in contact sliding is important to the fabrication of damage-free optics. This study develops an analytical method to characterize the stress field in fused silica under contact sliding by extending the embedded center of dilation (ECD) model and considering the depth of yield region. The effects of densification on the stress fields were considered by scratch volume analysis and finite element analysis. Key mechanisms, such as crack initiation and morphology evolution were comprehensively investigated by analyzing the predicted stress fields and principal stress trajectories. The predictions were validated by Berkovich scratching experiment. It was found that partial conical, median and lateral cracks could emerge in the loading stage of the contact sliding, but radial and lateral cracks could be initiated during unloading. It was also found that the partial conical crack had the lowest initiation load. The intersection of long lateral cracks makes the material removal greater.

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一种评估熔融二氧化硅接触滑动裂纹萌生和相互作用的分析方法

了解熔融石英在接触滑动中的断裂行为对制造无损伤光学器件具有重要意义。本文通过扩展嵌埋膨胀中心(ECD)模型，并考虑屈服区深度，建立了一种表征熔融石英接触滑动时应力场的解析方法。通过划痕体积分析和有限元分析，考虑了致密化对应力场的影响。通过分析预测应力场和主应力轨迹，对裂纹萌生和形貌演化等关键机理进行了全面研究。通过Berkovich抓痕实验验证了预测结果。研究发现，接触滑动加载阶段可形成部分锥形、中裂纹和侧向裂纹，卸载阶段可形成径向裂纹和侧向裂纹。局部锥形裂纹的起裂载荷最低。长横向裂纹的相交使材料的去除更大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advances in Manufacturing Materials Science-Polymers and Plastics

CiteScore

9.10

自引率

3.80%

发文量

274

期刊介绍： As an innovative, fundamental and scientific journal, Advances in Manufacturing aims to describe the latest regional and global research results and forefront developments in advanced manufacturing field. As such, it serves as an international platform for academic exchange between experts, scholars and researchers in this field. All articles in Advances in Manufacturing are peer reviewed. Respected scholars from the fields of advanced manufacturing fields will be invited to write some comments. We also encourage and give priority to research papers that have made major breakthroughs or innovations in the fundamental theory. The targeted fields include: manufacturing automation, mechatronics and robotics, precision manufacturing and control, micro-nano-manufacturing, green manufacturing, design in manufacturing, metallic and nonmetallic materials in manufacturing, metallurgical process, etc. The forms of articles include (but not limited to): academic articles, research reports, and general reviews.