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  • Y-Tec manufactures an ultra high strength steel bumper with PAM-STAMP 2G's springback correction
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    Y-Tec manufactures an ultra high strength steel bumper with PAM-STAMP 2G's springback correction

    Trade钣金成型Industry地面交通
    www.ytec.com
    Using the Yoshida-Uemori model in PAM-STAMP 2G improves the accuracy of springback prediction to a point where it becomes possible to determine effective qualitative countermeasures. By analyzing the stress and strain accumulated during forming, we were able to determine and eliminate the cause of poor dimensional accuracy. Thanks to PAM-STAMP 2G, we reduced the number of modifications on the stamping tool even in cases where the parts’ formability was challenging, such as Ultra High Strength Steel parts.
    Hiroki Kondo, Deputy Manager, Advanced Press Engineering Group/Dept. Y-Tec Corporation

    Challenge

    For vehicle crash active parts, ultra high strenght steels (UHSS) are used more and more. However with these materials, the increase in crash performance comes with more difficult formability and more complex springback behavior. In this case, after several physical trials with real prototype dies, Y-Tec failed to reach the required dimensional accuracy. Side walls were warped and the part was not curved enough along its length.

    Y-Tec manufactures an ultra high strength steel bumper with PAM-STAMP 2G's springback correction
    Y-Tec manufactures an ultra high strength steel bumper with PAM-STAMP 2G's springback correction

    Benefits

    • PAM-STAMP 2G allowed Y-Tec to identify phenomena that could not be seen with physical prototype tools
    • Springback calculation of 980 MPa UHSS was made possible with PAM- STAMP 2G and the Yoshida-Uemori material model

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    Permanent link to the page:
    https://cn.esi-group.com/node/784
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