首页>
外国专利>
STRETCH FLANGE CRACK PREDICTION METHOD, STRETCH FLANGE CRACK PREDICTION APPARATUS, COMPUTER PROGRAM, AND RECORDING MEDIUM
STRETCH FLANGE CRACK PREDICTION METHOD, STRETCH FLANGE CRACK PREDICTION APPARATUS, COMPUTER PROGRAM, AND RECORDING MEDIUM
展开▼
机译:拉伸凸缘裂纹预测方法,拉伸凸缘裂纹预测装置,计算机程序和记录介质
展开▼
页面导航
摘要
著录项
相似文献
摘要
A stretch flange crack prediction method of predicting initiation of stretch flange cracks that occurs in a flange end section during stretch flange forming of a deformable sheet, includes: a measurement value acquisition process of acquiring, for each of a plurality of sheet-shaped test pieces, a fracture strain measurement value, a normal strain gradient measurement value, and a circumferential strain gradient measurement value; a CAE analysis process of acquiring a maximum major strain maximum element having a highest maximum major strain, a normal strain gradient of the maximum major strain maximum element, and a circumferential strain gradient of the maximum major strain maximum element; a fracture determination threshold acquisition process of acquiring a fracture determination threshold by converting the fracture strain measurement value; and a prediction process of predicting that stretch flange cracks will be initiated, when the maximum major strain is equal to or higher than the fracture determination threshold.
展开▼