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Progressive damage induced degradation of mechanical properties in the hole surfaces during drilling processes of CFRP

Communication avec acte
Author
LIU, Hongguang
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
301676 Xi'an Jiaotong University [Xjtu]
ccCHERIF, Mehdi
1002421 Institut de Mécanique et d'Ingénierie [I2M]
ccCALAMAZ, Madalina
1002421 Institut de Mécanique et d'Ingénierie [I2M]
ccELIAS-BIREMBAUX, Hélène L.
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
ROSSI, Frederic
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
POULACHON, Gerard
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
ccAYED, Yessine
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]

URI
http://hdl.handle.net/10985/24924
DOI
10.1016/j.cirp.2023.04.044
Date
2023

Abstract

This paper presents a novel 3D numerical model of drilling CFRP to evaluate the degradation of mechanical properties in the hole surfaces. It can be used to determine the change of functional performance induced by accumulated damage. This function is realized through introducing damage evolution laws of the plies as well as the interfaces into the model. The damage level within plies leads to the degradation of stiffness of the hole surfaces. The simulation results are validated against cutting forces, torques and delamination, then the degradation of stiffness matrix is evaluated through prediction. This model is the first to merge different progressive damage evolution laws in drilling CFRP, which is beneficial for understanding the damage mechanisms in hole surfaces, and can be used to optimize CFRP drilling processes by reducing damage, delamination, and subsequent degradation of the workpiece stiffness.

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  • Institut de Mécanique et d’Ingénierie de Bordeaux (I2M)
  • Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA)
  • Laboratoire des Matériaux et Procédés (LaBoMaP)

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