부분모델 합성법을 이용한 자동차 외판의 헤밍 공정에 대한 3차원 유한요소해석

초록

Hemming is the last forming process in stamping and determines external quality of automotive outer panels. Few numerical approaches using 3-dimensional finite element model have been applied to a hemming process due to small element size which is needed to express the bending behavior of the sheet around small die corner and comparatively big model size of automotive opening parts, such as side door, back door and trunk lid etc. In this study, part model assembling method is suggested and applied to the 3-dimensional finite element simulation of flanging and hemming process for an automotive front hood.

키워드