Computer-assisted modelling method for the behavior of a...

Data processing: structural design – modeling – simulation – and em – Simulating nonelectrical device or system

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C703S002000

Reexamination Certificate

active

07865341

ABSTRACT:
A computer determines a subsequent state of a steel volume, based on an instantaneous initial state of said steel volume and at least one volumetric surface, the temporary influence quantities acting on said steel volume, by resolution of an equation of thermal condition and phase change. The states include for at least one volumetric element of the steel volume, a local distribution in concentration of a alloy element mobile in the steel, the local proportions of the modeled phases of the steel and a quantity describing a local energy content of the steel. The phases include austenite and another phase, generally, ferrite or cementite. In the context of the change equation, the concentration levels of the mobile alloy element, which are located on either side of the phase boundary, between the austenite and the other phase are determined by resolution of a Stephan problem.

REFERENCES:
patent: 6860950 (2005-03-01), Franz et al.
patent: 199 63 185 (2001-07-01), None
patent: 101 29 565 (2003-01-01), None
patent: 0 997 203 (2000-05-01), None
patent: 58199613 (1983-11-01), None
patent: 02258914 (1990-10-01), None
O.P. Bruno et al., Free Boundary Conditions at Austenite-Martensite Interfaces, Jan. 30, 1995, THe American Physical Society, vol. 74, No. 5, pp. 746-749.
G. N. Vlasichev, A method of numerical solution of one-dimensional stefan problems of two types, Sep. 1, 1993, Journal of Engineering Physics and Thermophysics, vol. 65, Issue 3, pp. 896-902.
A. Visintin; “Mathematical Models of Solid-Solid Phase Transitions in Steel”; IMA Journal of Applied Mathematics; 1987; pp. 143-157; vol. 39; XP008009060; Oxford University Press.
Example book of the software, “DICTRA Examples, Thermo-Calc AB”, Stockholm, Sweden, version 21, 2001, pp. 23 to 63.
User manual of the software DICTRA (“user, guide,”) the company Thermo-Calc, Stockholm, Schwerden, version 21, 2001, pp. 1-78.
Helander-Editor, “Newsletter, Firma Thermo-Calc Software”, No. 25, Mar. 2002, pp. 1-12, online http://www.thermocalc.com/Filer/Pdf/Newsletters/Newsletter-25.pdf; Stockholm, Sweden.
Greven et al., “Macroscopic Modeling of The Microstructural Evolution in Castins Using Thermodynamic Formulated Phase Diagrams”, 1998; pp. 187-194, Modelling of Castings, Welding and Advanced Soldification Processes VIII, The Minerals, Metals & Materials Society.
Borgenstam et al., “DICTRA, A Tool For Simulation of Diffusional Transformations in Alloys”, Journal of Phase Equilibria, vol. 21, No. 3, 2000, pp. 269-274.
Andersson et al., “Thermo-Calc & DICTRA, Computational Tools for Material Science”, vol. 26, No. 2, 2002, pp. 273-312, Elsevier Science Ltd.
Inden et al., “Interfacial Conditions At The Moving Interface During Growth Of Ferrite From Austenite In Fe-C-(X) Alloys”, Materials Science & Technology Nov. 9-12, 2003, pp. 65-79, Conference Proceedings, Chicago, Illinois, ISSN: 1546-2498.
Grafe, “Eidesstattliche Erklärung”, regarding the program DICTRA, pp. 61-63, 2008.
Höglund, “Computer Simulation Of Diffusion Controlled Transformations in Multicomponent Alloys”, Royal Institute of Technology, Stockholm, Schweden, 1997, pp. 1-17.
Crusius et al., “On the Numerical Treatment of Moving Boundary Problems”, Z. Metallkunde 83, 1992. pp. 673-678.
Thermo-Calc Software, “Thermo-Calc Software History”, online http://www.thermocalc.com/Company/History.html, Feb. 2, 2009,The Royal Institute of Technology, Stockholm, Sweden, 1 page.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Computer-assisted modelling method for the behavior of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Computer-assisted modelling method for the behavior of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer-assisted modelling method for the behavior of a... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2645589

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.