| 摘要 |
A method of analyzing press forming in the present invention includes a step of analyzing press forming, a step of analyzing springback, and a step of analyzing a shape. The step of analyzing press forming includes setting an initial temperature distribution for a heated press-forming material and performing a press-forming analysis by combining a temperature analysis and a structural analysis to obtain shape information, temperature distribution, stress distribution, and strain distribution after press forming and before release from a tool. The step of analyzing springback includes performing a springback analysis by combining a temperature analysis and a structural analysis based on the shape information, the temperature distribution, the stress distribution, and the strain distribution obtained in the step of analyzing press forming to obtain shape information, temperature distribution, stress distribution, and strain distribution after springback. The step of analyzing a shape includes performing an analysis of a change in shape of the press-forming material that occurs during and after cooling, until a range of the temperature distribution in the press-forming material falls within ±5°C, by combining a temperature analysis and a structural analysis based on the shape information, the temperature distribution, the stress distribution, and the strain distribution obtained in the step of analyzing springback. |
