A friction model for use with a commingled fiberglass-polypropylene plain-weave fabric and the metal tool during thermostamping
Keywords:
finite element analysis, thermoforming, woven-fabric composite material, frictionAbstract
This research focuses on the friction mechanism at the tool/fabric interface during thermostamping of woven commingled glass-polypropylene plain-weave fabric. A friction model was derived after completing an experimental investigation into the effect of processing parameters on the steel/fabric friction mechanism. This friction model was incorporated into ABAQUS as a user subroutine for use with a finite element model of a thermostamping operation. Parametric finite element studies were conducted to investigate the effect of changing the binder-ring force and punch velocity on the reaction force of the punch during the thermostamping process. Punch velocity was found to have a much greater effect on the reaction force of the punch and state of strain in the fabric than the binder-ring force.
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References
Anand L., “A constitutive model for interface friction”, Computational Mechanics, Vol. 12,
, pp. 197-213.
Blanchard P., Ford Research Laboratory, Personal communications, Aug 2003 and Feb 2004.
Chow S., Frictional Interaction between Blank Holder and Fabric in Stamping of Woven
Thermoplastic Composites, Master’s Thesis, Department of Mechanical Engineering,
University of Massachusetts Lowell, 2002.
Clifford M.J., Long A.C. and deLuca P, “Forming of engineering prepregs and reinforced
thermoplastics”, 2001 TMS Annual Meeting, Second Global Symposium on Innovations in
Materials, Process and Manufacturing: Sheet Materials: Composite Processing, (New
Orleans, LA) 2001.
Dong L., Lekakou C. and Bader M.G., “Solid-mechanics finite element simulations of the
draping of fabrics: a sensitivity analysis”, Composites Part A: applied science and
manufacturing, Vol. 31, 2000, pp. 639-652.
Gearing B.P., Moon H.S. and Anand L., “A plasticity model for interface friction: application
to sheet metal forming”, International Journal of Plasticity, Vol. 17, 2001, pp. 237-271.
Gorczyca J., Sherwood J. and Chen J., “Friction Between the Tool and the Fabric During the
Thermostamping of Woven Co-Mingled Glass-Polypropylene Composite Fabrics”,
Proceedings for the 18th Annual American Society for Composites Conference,
Gainesville, FL, October 20-22, 2003, paper number: 196.
Gorczyca J., A Study of the Frictional Behaviour of a Plain-Weave Fabric during the
Thermostamping Process, Doctoral Dissertation, Department of Mechanical Engineering,
University of Massachusetts Lowell, 2004.
Gorczyca J., Sherwood J., Liu L. and Chen J., “Friction and Shear in Thermostamping of
Composites - Part I”, Journal of Composite Materials, In Press, 2004.
Hutchings I.M., Tribology: Friction and Wear of Engineering Materials, CRC Press, Ann
Arbor, 1992.
Li X., Sherwood J., Liu L. and Chen J., “A material model for woven commingled glasspolypropylene
composite fabrics using a hybrid finite element approach”, International
Journal of Materials and Product Technology, In Review, 2004.
Liu L., Chen J., Gorczyca J. and Sherwood J., “Friction and Shear in Thermostamping of
Composites - Part II”, Journal of Composite Materials, In Press, 2004.
Peng X., Material Characterization and Stamping Simulation of Woven Composites, Ph.D.
Dissertation, Department of Mechanical Engineering, Northwestern University, 2003a.
Saint-Gobain, Website: http://www.twintex.com/fabrication_processes/tw_process.html,
Stachowiak G. W. , Batchelor A. W., Engineering Tribology, Second Edition, Butterworth
Heinemann, Boston, 2001.
