This paper presents a computational procedure for the analysis of the diaphragm forming of thermoplastic composite materials. The objective of the analysis is to simulate the diaphragm forming process and predict the resulting fiber orientation and transverse thickness distribution. A computational algonthm of the procedure is presented along with a description of each submodel in the analysis. Predictions are presented for the resulting thickness distributions and fiber orientations for a series of circular disk geometries.
References
1.
Carlile, D.R. and D.C. Leach "Damage and Notch Sensitivity of Graphite/PEEK Composites," in 15th National SAMPE Technical Conference (1983)
2.
Gibbs, H.H. "K-Polymer Composite Materials—A New Approach to Damage Tolerant Aerospace Structures,"m SAE Aerospace Contress (1984).
3.
Ma, C.C. , J.E. O'Conner and A.Y. Loo "Polyphenylene Sulfide High Performance Composites,"SAMPE Quarterly, 15 (1984)
4.
Harvey, M.T. "Designing with Thermoplastic Composites-Product, Form and Process Economics," in CoGSME-Fabncating Composites'86 (1986)
5.
Cattanach, J.B. and A.J. Barnes."Forming Fibre-Plastics Composites,"U S. Patent #4657717 (April 14, 1987)
6.
Gutowski, T.G. , S.J. Wineman and Z. Cai "Application of the Resin Flow/Fiber Deformation Model," in 31st International SAMPE Symposium (1986)
7.
Barnes, J.A. and F.N. Cogswell "Transverse Flow Processes in Thermoplastic Composites," in ASC-Second Technical Conference (1987)
8.
Cogswell, F.N. and J.B. Cattanach "Reinforced Plastics, Applied Science/Pritchard, 1986,"Processing with Aromatic Polymer Composites
9.
Cornfield, G.E. and R.H. Johnson "The Forming of Superplastic Sheet Metal,"International Journal of Mechanical Sciences , 12479-490 (1970)
10.
Holt, D.L. "An Analysis of the Bulging of a Superplastic Sheet Metal," International Journal of Mechanical Sciences, 12491-497 (1970)
11.
Odquist, F K GMathematical Theory of Creep and Creep Rupture , Oxford University Press ( 1974 )
Crochet, M.J.Numencal Simulation of Non-Newtonian Flow , Elsevier (1984).
18.
Robertson, R.E. , E.S. Hsiue and G S Y. Yeh. "Continuous Fiber Rearrangements During the Modeling of Fiber Composites, II Flat Cloth to a Rounded Cone " Polymer Composites, 5 (1984).
19.
Robertson, R.E. , E.S. Hsiue and G S Y Yeh "Fiber Rearrangements During the Molding of Continuous Fiber Composites I Flat Cloth to a Hemisphere ," Polymer Composites, 2 (1981)
20.
Potter, K.D. "The Influence of Accurate Stretch Data for Reinforcements on the Production of Complex Structural Moldings," Composites, 3 ( 1979).
21.
Kuo, S.S.Numerical Methods and Computers, Addison-Wesley Publishing Company (1965)
22.
Abdy, P.R. and M A H Dempsters Introduction to Optimization Methods , Chapman and Hall Ltd. (1974)