A unified viscoplastic constitutive equation is combined with the Bernoulli-Euler beam equations to create a model to describe autoclave age forming of beam structures used in aerospace structures. Predictions of ‘springback’ based on the model are obtained numerically and compared with experimental data for pure aluminium and 7075 aluminium alloy. Accurate predictions are found between model simulations and experimental observations. Issues related to extensions of the methodology to more complicated geometries are discussed.
MillerA. K.TanakaT. G.NONSS: A new method for integrating unified constitutive equations under complex historiesASME J. Engng Mater. Technol., 1988, 110, 205–211.
Ramsey-IdemK.PeddiesonJ.Unified simulation of age and cold forming. In Proceedings of theSECTAM-XX, Paper MF80, 2000, pp. 1–8.
6.
JamesG. H.ImbrieP. K.HillP. S.AllenD. H.HaislerW. E.An experimental comparison of several current viscoplastic constitutive modles at elevated temperaturesASME J. Engng Mater. Technol., 1987, 109, 130–139.
7.
HolmanM. C.Autoclave age forming large aluminium aircraft panelsJ. Mech. Working Technol., 1989, 20, 477–488.
8.
MillerA. K.ShihC. F.An improved method for numerical integration of constitutive equations of the work hardening recovery typeASME J. Engng Mater. Technol., 1977, 99, 275–277.
9.
MillerA. K.SherbyO. D.A simplified phenomenological model for non-elastic deformation: Prediction of pure aluminium behaviour and incorporation of solute strengthening effectsActa Metall., 1978, 26, 289–304.
10.
HartE. W.Constitutive relations for the non-elastic deformation of metalsASME J. Engng Mater. Technol., 1976, 98, 193–202.
11.
BodnerS. R.PartomY.Constitutive equations for elastic-viscoplastic strain-hardening materialsASME J. Appl. Mech., 1975, 42, 385–389.
12.
BodnerS. R.MerzerA.Viscoplastic constitutive equations for copper with strain rate history and temperature effectsASME J. Engng Mater. Technol., 1978, 100, 388–394.
13.
StoufferD. C.BodnerS. R.A constitutive model for the deformation induced anisotropic plastic flow of metalsInt. J. Engng Sci., 1979, 17, 757–764.
14.
WalkerK. P.WilsonD. A.Constitutive modeling for engine materials. United Technologies, Pratt and Whitney Report FR-17911, 1983.
15.
NarimetlaS. P.PeddiesonJ.BuchananG. R.ForoudastanS.Simulation of stringer age forming. In Proceedings of Nineteenth Southeastern Conference onTheoretical and Applied Mechanics, Vol. 19, 1998, pp. 430–441.
16.
MillerA. K.An inelastic constitutive model for monotonic, cyclic and creep deformation, Part IASME J. Engng Mater. Technol., 1976, 98, 97–105.
17.
MillerA. K.An inelastic constitutive model for monotonic, cyclic and creep deformation, Part IIASME J. Engng Mater. Technol., 1976, 98, 106–113.
18.
MillerA. K.Modeling of cyclic plasticity: Improvements in simulating normal and anomalous Bauschinger effectsASME J. Engng Mater. Technol., 1980, 102, 215–220.
