Eliminating Forging Defects Using Genetic Algorithms

Abstract In this article, an optimization method for metal forging process designs using finite element-based simulation is presented. Using as entry parameters the specifications of the final product the so-called inverse techniques developed for optimization problems allows the calculation of the optimal solution, the design parameters that produce the required product. An evolutionary genetic algorithm is proposed to calculate optimal shape geometry and temperature. An example demonstrating the efficiency of the developed method is presented considering a two-stage hot forging process. It considers optimization of the process parameters to reduce the difference between the realized and the prescribed final forged shape under minimal energy consumption, restricting the maximum temperature.

[1]  Ramana V. Grandhi,et al.  Computer aided preform design in forging using the inverse die contact tracking method , 1996 .

[2]  Ramana V. Grandhi,et al.  Studies on optimization of metal forming processes using sensitivity analysis methods , 2004 .

[3]  Jean-Loup Chenot,et al.  Inverse problems in finite element simulation of metal forming processes , 1996 .

[4]  Luísa Costa Sousa,et al.  Simulation model for hot and cold forging by mixed methods including adaptive mesh refinement , 1996 .

[5]  Jean-Loup Chenot,et al.  OPTIMAL DESIGN FOR NON‐STEADY‐STATE METAL FORMING PROCESSES—I. SHAPE OPTIMIZATION METHOD , 1996 .

[6]  Shiro Kobayashi,et al.  Metal forming and the finite-element method , 1989 .

[7]  Nicholas Zabaras,et al.  A sensitivity analysis for the optimal design of metal-forming processes , 1996 .

[8]  J. Z. Zhu,et al.  The finite element method , 1977 .

[9]  Ramana V. Grandhi,et al.  PREFORM DIE SHAPE DESIGN IN METAL FORMING USING AN OPTIMIZATION METHOD , 1997 .

[10]  H. Saunders Book Reviews : The Finite Element Method (Revised): O.C. Zienkiewicz McGraw-Hill Book Co., New York, New York , 1980 .

[11]  Luísa Costa Sousa,et al.  Optimisation of shape and process parameters in metal forging using genetic algorithms , 2004 .

[12]  Luísa Costa Sousa,et al.  Inverse methods in design of industrial forging processes , 2002 .

[13]  Catarina F. Castro,et al.  An efficient algorithm to estimate optimal preform die shape parameters in forging , 2001 .