Fitting function representation for strain fields and its application to the optimizing process |
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Authors: | Kun Chen Ke-jia Liu Li-qun Wei Yi-tao Yang |
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Institution: | 1. School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai, 201418, China 2. School of Materials Science and Engineering, Shanghai University, Shanghai, 200072, China
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Abstract: | A fitted function method to describe the strain fields during forging was discussed to optimize the homogeneous distribution of strain in the axial forging zones during successive stretching. The results are verified by experiment and numerical simulation, and the deviations between experiment and simulation are less than 24%. Therefore, the fitted function method can be applied to optimize the stretching process for large forgings. The optimal value of feed determined by the analytic method ensures that the degree of inhomogeneity in strain in the axial ingot zone is less than 6%. This work provides a mathematic model to optimize technological parameters in stretch forging of large ingots. |
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Keywords: | forging strain fitting fimcfion representation optimization |
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