Design of Forging Process Parameters With Deformation and Temperature Constraints-Reference-Cited by-同舟云学术

Design of Forging Process Parameters With Deformation and Temperature Constraints

Published:1996-08-01 Issue:3 Volume:118 Page:441-444
ISSN:1087-1357
Container-title:Journal of Manufacturing Science and Engineering
language:en
Short-container-title:

Author:

Grandhi R. V.¹,Cheng H.²,Kumar S. S.¹

Affiliation:

1. Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435

2. Systems Research Laboratory, Dayton, OH

Abstract

This paper presents a methodology for designing optimal process parameters for forging operations. The nonlinear rigid viscoplastic finite element (FE) method is used for deformation and thermal analyses. From the FE model a state space system is developed for representing the coupled deformation and thermal behavior of the metal forming system. Constraints are imposed on the strain rate and temperature of the deforming work-piece for obtaining the desired physical/microstructural properties in the final product. The linear quadratic regulator (LQR) theory for finite time control is used in designing the initial die temperature and optimal ram velocity schedules. The approach is demonstrated on a plane strain channel section forging under nonisothermal conditions.

Publisher

ASME International

Subject

Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering

Link

http://asmedigitalcollection.asme.org/manufacturingscience/article-pdf/118/3/441/5558222/441_1.pdf

Reference5 articles.

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2. Seetharaman V. , MalasJ. C., and LombardC. M., “Hot Extrusion of a Ti-AL-Nb-Mn Alloy,” Materials Research Society Proceedings, Vol. 213, 1991, pp. 889–894.

3. Kobayashi, S., Oh, S. I., and Altan, T., Metal Forming and the Finite Element Method, Oxford University Press, New York, 1989.

4. Grandhi R. V. , ModukuruS. C., and MalasJ. C., “Integrated Strength and Manufacturing Process Design Using a Shape Optimization Approach,” ASME Journal of Mechanical Design, Vol. 115, March 1993, pp. 125–131.

5. Cheng H. , GrandhiR. V., and MalasJ. C., “Design of Optimal Process Parameters for Non-isothermal Forging,” International Journal for Numerical Methods in Engineering, Vol. 37, No. 1, 1994, pp. 155–177.

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