Application technology
- Mechanical properties evaluation
- Body rigidity and durability evaluation
- Crashworthiness evaluation
- Performance evaluation of outer panels
- Analysis of body-structures and their performance
- Press-forming simulation
- New forming technology
- Joining techniques for steel steets
- Corrosion performance evaluation techniques
Formability Prediction Technique
Material model for forming simulation
In order to improve the accuracy of CAE prediction, material modeling techniques are being developed with consideration of the Bauschinger effect and elastic / plastic anisotropies.
Example of stretch-flange formability analysis
The stretch-flange-fractures can be accurately predicted by using the fracture criterion considering the strain gradient in stretch-flange deformation.
- Fracture prediction by using criterion with strain gradient effect
- CAE analysis
In CAE prediction, the red area indicates the risk of stretch-flange-fractures.
The CAE prediction shows good agreement with the experimental result.
Example of springback analysis
The CAE simulation can accurately estimate the springback, the major issue in formability of high strength steels, and propose a remediation to improve the precision of part shapes.
Advanced CAE technologies are being developed including CAE prediction techniques for various issues in press forming, such as fractures, wrinkles, stretch-flange-fractures, springback and surface distortion, and material modeling techniques which can consider the Bauschinger effect and elastic / plastic anisotropies. The CAE prediction can support the deployments of automobile parts by the proposed remediation for the press forming issue.