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A dynamic cutting force model for transverse orthogonal cutting of unidirectional carbon/carbon composites considering fiber distribution

机译：考虑光纤分布的单向碳/碳复合材料横向正交切割动态切割力模型

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摘要

Many unwanted defects such as burr and delamination can be induced due to the high cutting forces in the machining process of carbon/carbon (C/C) composites due to their brittle property. In this regard, it is necessary to predict the cutting force accurately in the machining of C/C composites. In this paper, a prediction model of dynamic cuffing force in time domain is proposed for transverse orthogonal cutting of unidirectional C/C (UD-C/C) composites based on the energy method considering the random distribution of fibers and voids. Firstly, a microscopic representative volume element (MRVE) consisting of a single carbon fiber and its surrounding carbon matrix is introduced into this model, and its size varies with the distribution of fibers and voids. Then, the cutting force model of a MRVE is established considering the fiber orientation angle. Second, the representative volume element (RVE) of transverse cross section of UD-C/C composites is simulated mathematically with the random distribution of fibers and voids. The instantaneous resultant cuffing force model in time domain is developed by integrating the cuffing force of the in-cut MRVEs. The comparison of the predicted and experimental cutting forces shows a good agreement.
机译：由于碳/碳（C / C）复合材料的加工过程中的高切割力，可以引起许多不需要的缺陷，例如毛刺和分层由于它们的脆性性质。在这方面，必须在C / C复合材料的加工中准确地预测切割力。本文基于考虑纤维和空隙的随机分布的能量方法，提出了一种时域动态袖带力的预测模型，提出了基于纤维和空隙的随机分布的能量方法的单向C / C（UD-C / C）复合材料的横向正交切割。首先，将由单碳纤维及其周围碳基质组成的微观代表性体积元素（MRVE）引入该模型中，其尺寸随纤维和空隙的分布而变化。然后，考虑纤维取向角度建立MRVE的切割力模型。其次，用纤维和空隙的随机分布在数学上模拟UD-C / C复合材料的横截面的代表体积元素（RVE）。时域中的瞬时所得到的箍筋模型是通过整合在切割的MRVER的袖口的倾斜力而开发的。预测和实验切削力的比较表现出良好的一致性。

著录项

  • 来源
    《Composite Structures》 |2020年第11期|112668.1-112668.16|共16页
  • 作者

    Shan Chenwei; Zhang Menghua; Yang Yang; Zhang Shengnan; Luo Ming;

  • 作者单位

    Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab High Performance Mfg Aero Engine Xian 710072 Shaanxi Peoples R China|Northwestern Polytech Univ Engn Res Ctr Adv Mfg Technol Aero Engine Minist Educ Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab High Performance Mfg Aero Engine Xian 710072 Shaanxi Peoples R China|Northwestern Polytech Univ Engn Res Ctr Adv Mfg Technol Aero Engine Minist Educ Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab High Performance Mfg Aero Engine Xian 710072 Shaanxi Peoples R China|Northwestern Polytech Univ Engn Res Ctr Adv Mfg Technol Aero Engine Minist Educ Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab High Performance Mfg Aero Engine Xian 710072 Shaanxi Peoples R China|Northwestern Polytech Univ Engn Res Ctr Adv Mfg Technol Aero Engine Minist Educ Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab High Performance Mfg Aero Engine Xian 710072 Shaanxi Peoples R China|Northwestern Polytech Univ Engn Res Ctr Adv Mfg Technol Aero Engine Minist Educ Xian 710072 Shaanxi Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    C/C composites; Orthogonal cutting; Cutting force; RVE; Fiber distribution;

    机译：C / C复合材料;正交切割;切割力;RVE;纤维分布;

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