A finite element assessment of chip formation mechanisms in the machining of CFRP laminates with different fibre orientations

被引：18

作者：

Cepero-Mejias, F. ^{[1
,2
,3
]}

Phadnis, V. A. ^{[4
]}

Kerrigan, K. ^{[5
]}

Curiel-Sosa, J. L. ^{[2
,3
]}

机构：

[1] Univ Sheffield, Ind Doctorate Ctr Machining Sci, Sir Frederick Mappin Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England

[2] Comp Aided Aerosp & Mech Engn CA2M Res Grp, Sir Frederick Mappin Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England

[3] Univ Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England

[4] 3M UK Plc, Bracknell RG12 8HT, Berks, England

[5] Univ Sheffield, Adv Mfg Res Ctr Boeing, Adv Mfg Pk,Wallis Way, Rotherham S60 5TZ, S Yorkshire, England

来源：

COMPOSITE STRUCTURES | 2021年 / 268卷

基金：

英国工程与自然科学研究理事会;

关键词：

Machining; Chip formation; Finite element; Modelling; Orthogonal cutting; Composite; REINFORCED POLYMER; COMPOSITE; DELAMINATION; INTERFACE;

D O I：

10.1016/j.compstruct.2021.113966

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The virtual assessment of a composite machining process using finite element (FE) models constitutes a costeffective solution to study the surface quality of machined parts. Thus, the correct simulation of the chip fracture becomes essential to obtain consistent numerical results. This work develops an original FE approach to emulate the chip formation in the machining of carbon fibre reinforced polymer (CFRP) laminates. Composite damage initiation modes are evaluated via hybrid Puck-Hashin composite failure criteria. Subsequently, mechanical properties of the damaged elements are linearly degraded. Finally, a novel strainbased element deletion criterion is applied to reliably simulate the chip release process. Five different cutting configurations are successfully modelled. The influence of relevant fibre orientations and cutter rake angles on chip formation are analysed in detail. The shape of the simulated chips reaches a high similarity with the chips obtained in relevant experimental trials presented in the literature. Useful insights about the modelling of subsurface damage in composite machining are also produced in this investigation. For instance, the modelling of the fibre bending damage which take place in the machining of 90 degrees laminates is modelled with great precision.

引用

页数：13

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