Material consolidation modeling and control system

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364578, G05B 1302

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active

051364972

ABSTRACT:
A process and apparatus for providing simulation and modeling and control which permits user feedback for purposes of implementing design and process optimization for composite or powder compact materials. Control is achieved through a dual feedback and feedforward hierarchical control scheme employing an interactive modeling system for providing the feedforward control data and a PID control loop for the feedback control. Modeling is based upon constitutive equations which form the basis of modeling solutions derived from the micromechanical relationships inherent in the consolidated materials. The system is implemented in an FEM software platform such that a graphics based visualization in three dimensional form can be provided to the user.

REFERENCES:
patent: 3758762 (1973-09-01), Littman et al.
patent: 3989935 (1976-11-01), Fay
patent: 4038531 (1977-07-01), Loe, Jr.
patent: 4363612 (1982-12-01), Walchutter
patent: 4407013 (1983-09-01), Acara et al.
patent: 4546810 (1985-10-01), Landolt
patent: 4563735 (1986-01-01), Hiroi et al.
patent: 4570229 (1988-02-01), Breen et al.
patent: 4698745 (1987-10-01), Hiroi et al.
patent: 4721448 (1988-01-01), Irish et al.
patent: 4817006 (1989-03-01), Lewis
patent: 4828007 (1989-05-01), Fisher et al.
patent: 4951191 (1990-08-01), Hiroi et al.
"Finite Element Simulation of Hot Isostatic Pressing of Metal Powders," Int Abouaf, M. et al., Int. J. Numerical Methods Engineering, vol. 25, 191-212 (1988).
"On the Numerical Integration of a Class of Pressure-Dependent Plasticity Models", Aravas, N., Int. J. Numerical Methods Engineering, vol. 24, pp. 1395-1416 (1987).
HIP 6.0 Background Reading, and User Manual, Engineering Department, Cambridge University, Cambridge, U.S., Ashby, M. (Jan. 1990) (software product).
"Numerical Simulation of Hot Isostatic Pressing of Ceramic Powders", Besson, J. et al., Centre des Materiaux, ENSMP (Publication date uncertain).
"Densification of Iron Compacts with Various Initial Porosities Under Hydrostatic Pressure", Biner et al., Acta Metall., vol. 38, No. 4, pp. 603-610 (1990).
"An Internal Variable Constitutive Model for Hot Working of Metals", Brown et al., Int. J. Plasticity, vol. 5, pp. 95-130 (1989).
"Anayltical Modeling of the Hot Isostatic Pressing Process", Cassenti, UTRC, East Hartford, Connecticut (Jul., 1980).
DEFORM.TM., Product of Battelle, Columbus, Ohio (software based simulation system).
"A New Yield Function for Compressible P/M Materials", Doraivelu, Int. J. Mechn. Sci., vol. 26, No. 9/10, pp. 527-535 (1984).
"Deformation-Mechanism Maps," Frost & Ashby, excerprts, Pergamon Press, N.Y., 1982 (handbook).
"Continuum Theory of Ductile Rupture by Void Nucleation and Growth: Part 1-Yield Criteria and Flow Rules for Porous Ductile Materials", J. Eng. Matl. Tech 99, 2-15, Gurson, A. (1977).
"HIPNAS.TM.", Product of KOBE Steel, Ltd., Kobe, Japan (software based simulation system).
"Metal Forming and Finite Element Method", Kobayashi et al., Oxford University Press (1989) (Handbook).
"Theory and Optimization of Hot Isostatic Pressing", PMI, vol. 22, No. 2 (1990), Catev et al.
"Analysis of the Forming Process of Sintered Powder Metals by a Rigid-Plastic Finite Element Method," Mori et al., Int. J. Mech. Sci., vol. 29, No. 4, pp. 229-238 (1987).
"Computer Simulation of Sintering", J. Ross et al., Acta Metall, vol. 30 (1), pp. 203-212 (1982).
"Thermomechanical Deformation of Powder-Based Porous Aluminum, Part I: Evolution of Pore Structure: Part II: Constitutive Model Including Densification Hardening," Wang, Alcoa Laboratories, Alcoa Center, PA., in progress (1990).
"An Objective Time-Integration Procedure for Isotropic Rate-Independent and Rate-Dependent Elastic-Plastic Constitutive Equations," Weber et al., submitted for publication for Int. J. Plasticity, (Jun., 1989) (Weber I).
"Simulation of the Compaction of Powder Components", Weber et al., (Published after 1989) (Weber II).
"Modeling of Densification and Coarsening During Hot Isostatic Pressing", Wlassich et al., TMS Symposium on Intelligent Processing of Materials, Indianapolis, Indiana (Oct., 1989).
"Microstructure and Mechanical Properties of Nickel Alumnide Powders Consolidated by Extrusion and Hot Isostatic Pressing", Wright et al., Idano National Eng. Laboratory, Idaho Falls, ID. (Jan. 1990).

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