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首页> 外文期刊>Composite Structures >Effect of cutter geometry on machining induced damage in orthogonal cutting of UD polymer composites: FE study
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Effect of cutter geometry on machining induced damage in orthogonal cutting of UD polymer composites: FE study

机译：刀具几何形状对UD聚合物复合材料正交切削中加工引起的损伤的影响：有限元研究

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摘要

This article presents a finite-element analysis (FEA) based study to understand the influence of cutting parameters (rake angle, relief angle and cutter edge radius) on the machining-induced damage of unidirectional (UD) composites. Carbon/epoxy (CFRP) and glass/epoxy (GFRP) composites are considered. Onset of damage in composites is modelled using a combination of maximum stress and Puck's fracture criteria, while a novel damage propagation algorithm is proposed to account for the post-damage material softening behaviour. A spring-back phenomenon (partial elastic recovery of workpiece material after tool passed a cutting surface) often observed in composites machining, is considered in the FE model to allow a better prediction of the thrust force and induced damage. A validated FE model predicts that with increasing relief angle, the extent of sub-surface damage is reduced. Rake angle or tool edge radius are not found to have a great influence on the induced damage. A large dependence is observed between the fibre angle and the induced damage, as the severity of damage increase when fibre orientations varies from 30 degrees to 90 degrees.
机译：本文提出了一项基于有限元分析（FEA）的研究，以了解切削参数（前角，后角和刀刃半径）对加工引起的单向（UD）复合材料损伤的影响。考虑了碳/环氧树脂（CFRP）和玻璃/环氧树脂（GFRP）复合材料。使用最大应力和Puck的断裂准则对复合材料的损伤开始进行建模，同时提出了一种新颖的损伤传播算法来说明损伤后材料的软化行为。在有限元模型中考虑了在复合材料加工中经常观察到的回弹现象（刀具通过切削表面后工件材料的部分弹性恢复），以便更好地预测推力和引起的损伤。一个经过验证的有限元模型预测，随着后角的增加，地下破坏的程度会降低。没有发现前角或刀刃半径对引起的损坏有很大的影响。当纤维取向从30度到90度变化时，随着损伤的严重程度增加，在纤维角度和引起的损伤之间观察到很大的依赖性。

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  • 来源
    《Composite Structures》 |2019年第4期|439-450|共12页
  • 作者

    Cepero-Mejias F.; Curiel-Sosa J. L.; Zhang C.; Phadnis V. A.;

  • 作者单位

    Univ Sheffield, Ind Doctorate Ctr Machining Sci, Sir Frederick Mappin Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England|Comp Aided Aerosp & Mech Engn CA2M Res Grp, Sir Frederick Mappin Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England|Univ Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England;

    Comp Aided Aerosp & Mech Engn CA2M Res Grp, Sir Frederick Mappin Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England|Univ Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England;

    Jiangsu Univ, Sch Mech Engn, Zhenjiang, Peoples R China;

    AMRC Boeing, Adv Mfg Pk,Wallis Way, Rotherham S60 5TZ, S Yorkshire, England;

  • 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

    Machining; Induced machining damage; Finite element; Modelling; Orthogonal cutting; Composite;

    机译：机械加工;引起的加工损伤;有限元;造型;正交切削;复合;

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