Stress states of pre-stress filament wound parts are crucial to their design. However,
proposed models exhibit certain errors that cannot be neglected. To minimize these errors,
we propose an analytical model for tension-induced residual stress of composite rings
with a metal liner based on elastic cylinder theory. The contributions of stress variation
of inner layers on the entire part are calculated through inverse iteration method and the
stress distribution of the outmost layer is accurately calculated by integral relationship.
For comparisons with the analytical model, a finite element model is proposed based
on several special simulation strategies. Both models are verified through winding
experiments with the maximum error being under 5%. Compared with previous results
of analytical models through three effect factors, the error between the two models
in case of hoop stress was over 20%, thereby confirming the accuracy of our model.
Keywords
pre-stress winding, analytical model, finite element model,
stress distribution
R&D Center for Composites
Industry Automation, College of Material Science and
Technology
Nanjing University of Aeronautics and Astronautics
Nanjing
China
R&D Center for Composites
Industry Automation, College of Material Science and
Technology
Nanjing University of Aeronautics and Astronautics
Nanjing
China
R&D Center for Composites
Industry Automation, College of Material Science and
Technology
Nanjing University of Aeronautics and Astronautics
Nanjing
China
R&D Center for Composites
Industry Automation, College of Material Science and
Technology
Nanjing University of Aeronautics and Astronautics
Nanjing
China
R&D Center for Composites
Industry Automation, College of Material Science and
Technology
Nanjing University of Aeronautics and Astronautics
Nanjing
China
R&D Center for Composites
Industry Automation, College of Material Science and
Technology
Nanjing University of Aeronautics and Astronautics
Nanjing
China