In order to solve the lack of flaw when flanging the part with freeform internal profile,the circumferential strain dispersion effect has been analyzed in flanging the profile.

• 为了解决具有异形内轮廓的冲压件翻边工序中易产生裂纹等缺陷,分析了异形内轮廓翻边成形时周向应变分散效应。