Abstract
Finite elements (FE) provide an excellent and low-cost approach in the assessment of composite machining induced damage. This article is focused on the evaluation of the damage underlying the machined surface through the development of a novel 3D FE model in composite machining. Sub-surface damage of UD-CFRP with fibre orientations from 0o to 90o is evaluated. An algorithm to assess composite damage evolution and chip formation is inserted via user-defined subroutine. Damage initiation is determined using Hashin's failure criteria for fibre damage modes, while matrix damage modes are assessed via Puck's failure criteria. Subsequent damage evolution is modelled using an energy-based linear damage degradation law. Numerical results reveal relevant advances in the prediction of the damage induced underlying the machined surface for fibre orientations from 60o to 90o obtained in previous investigations.
Original language | English |
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Pages (from-to) | 366-371 |
Number of pages | 6 |
Journal | Procedia CIRP |
Volume | 87 |
DOIs | |
Publication status | Published - 31 May 2020 |
Externally published | Yes |
Event | 5th CIRP Conference on Surface Integrity, CSI 2020 - Duration: 1 Jun 2020 → 5 Jun 2020 |
Bibliographical note
Funding Information:This work is funded by the EPSRC Industrial Doctoral Centre (EP/L016257/1) of Sheffield.
Publisher Copyright:
© 2020 The Author(s).
Keywords
- Composite
- Finite element
- Machining
- Subsurface damage
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering