TY - JOUR
T1 - Modeling the effect of temperature and pressure on the peak and steady-state ply-ply friction response for UD C/PAEK tapes
AU - Pierik, E.R.
AU - Grouve, W.J.B.
AU - Wijskamp, S.
AU - Akkerman, R.
N1 - Funding Information:
This work was performed as part of the MaterialenNL research program under project number 17880, which is financed by the Dutch Research Council (NWO), The Netherlands . The authors also gratefully acknowledge the financial and technical support from the industrial and academic members of the ThermoPlastic composites Research Center (TPRC), The Netherlands . Further, we thank Marten van der Werff for performing the rheometry measurements on PEEK.
Publisher Copyright:
© 2023 The Authors
PY - 2023/10
Y1 - 2023/10
N2 - A proper description of ply-ply friction is essential for the simulation of thermoplastic composite forming processes. The friction response from characterization experiments typically shows a peak followed by a steady-state shear stress. The rate-dependency of the peak and steady-state shear stress can be predicted by considering shear flow and wall slip effects. In this study, we investigated the temperature- and pressure-dependency of the peak and steady-state friction. The friction decreased slightly with increasing temperature, which was predicted by the shear flow model when including the temperature-dependency of the matrix viscosity. Further, the normal pressure was found to govern the onset of wall slip. A high pressure suppresses wall slip, increasing the steady-state friction. This effect was successfully modeled by including a pressure-sensitive critical shear stress for the onset of wall slip.
AB - A proper description of ply-ply friction is essential for the simulation of thermoplastic composite forming processes. The friction response from characterization experiments typically shows a peak followed by a steady-state shear stress. The rate-dependency of the peak and steady-state shear stress can be predicted by considering shear flow and wall slip effects. In this study, we investigated the temperature- and pressure-dependency of the peak and steady-state friction. The friction decreased slightly with increasing temperature, which was predicted by the shear flow model when including the temperature-dependency of the matrix viscosity. Further, the normal pressure was found to govern the onset of wall slip. A high pressure suppresses wall slip, increasing the steady-state friction. This effect was successfully modeled by including a pressure-sensitive critical shear stress for the onset of wall slip.
U2 - 10.1016/j.compositesa.2023.107671
DO - 10.1016/j.compositesa.2023.107671
M3 - Article
SN - 1359-835X
VL - 173
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 107671
ER -