The elastic recovery at the end of the forging process has been modelled using the finite element method. The polymer is considered as an an isotropic inhomogeneous elastic material. Thermal expansions are taken into account. It is pointed out that the polymer final shape highly depends on the anisotropic and inhomogeneous characteristics of the material. As a conse quence, it is necessary to measure carefully the elastic properties of the forged material.
Coffman, P.M.1968. 26th Annual Technical Conference, Society of Plastics Engineers, p. 225.
3.
Werner, A.C. and J.J. Krimm.1968. 26th Annual Technical Conference, Society of Plastics Engineers, p. 619.
4.
Coffman, P.M.1969. SPE J.,25:50.
5.
Latham, D.H.1970. Plastics and Polymers, p. 346.
6.
Abrahams, M. , C.E. Spedding and B.J. Marsh.1970. Plastics and Polymers , 38:124.
7.
Titus, J.B.1972. "Solid Phase Forming (Cold Forming) of Plastics;' Plastics Report R42, Plastics Technical Evaluation Center, Picatinny Arsenal, N.J.
8.
Kulkarni, K.M.1973. Machine Design, 45:94.
9.
9. Kulkarni, K. M. 1974. US Patent 3,825,648.
10.
Kulkarni, K.M.1979. Polym. Eng. Sci., 19:474.
11.
11. Kepes, A., E. Weynant, P. Avenas and J. M. Haudin. 1982. US Patent 4,324,756.
12.
Weynant, E. and J.M. Haudin.1981. Matériaux et Techniques, (March):57.
13.
Weynant, E. and J.M. Haudin.1981. 27th International Symposium on Macromolecules, IUPAC Macro 81, 2:1019.
14.
Bielefeldt, K. and J.W. Walkowiak.1983. 29th International Symposium on Macromolecules, IUPAC Macro 83, 3:56.
15.
Deneuville, P.1985. "Déformation plastique et cinétique de cristallisation du polyoxymethylene. Forgeage en matrice fermée à l'état solide," Thesis, Ecole Nationale Supérieure des Mines de Paris.
16.
Deneuville, P. and J. M. Haudin. 1986. French Patent 2,578,779.
17.
17. Gaussens, G., J. M. Haudin and B. Monasse. 1988. US Patent 4,747,990.
18.
Haudin, J.M., T. Valla and S. Glommeau.1988. "Compte rendu d'une recherce financée par le Ministere de la Recherche et de la Technologie," 85.S.0180.
19.
Monasse, B., M. Laugier, J.M. Haudin and J.L. Chenot.1989. 5th Annual Meeting of the Polymer Processing Society, Kyoto, p. 135.
20.
Valla, T., B. Monasse, J.M. Haudin and S. Glommeau.1990. 6th Annual Meeting of the Polymer Processing Society, Nice, 11-01.
21.
Käufer, H. and G. Arnold.1977. Kunststoffe, 67:457.
22.
Gauvin, R., Q.X. Nguyen, J.P. Chalifoux and H. Yelle.1986. Entraînements et Systèmes, (March-April):17.
23.
Germain, Y.1985. "Modélisation par elements finis d'écoulements viscoplastiques avec frottement. Application au forgeage à chaud," Thesis, Ecole Nationale Supérieure des Mines de Paris.
24.
Germain, Y., J.L. Chenot and P.E. Mosser.1986. Proc. NUMIFORM 86 Conf, Gothenburg, p. 271.
25.
Laugier, M., T. Valla, E. Wey, J.M. Haudin and J.L. Chenot.1987: Proc. NUMETA 87, Swansea, 2:C11-C19.
26.
G'Sell, C. and J.J. Jonas.1979. J. Mater. Sci. , 15:583.
27.
Valla, T., J.M. Haudin and S. Glommeau.1990. 6th Annual Meeting of the Polymer Processing Society, Nice, P11-01.