Asymmetric double-curvature thick plate blank unfolding method for integral pressing forming process

• Main Authors: LIN YANLI, XU ENQI, LIU JUNPENG, YAN GENG, KONG PENG
• Format: Patent
• Language: Chinese; English
• Published: 08.07.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention belongs to the technical field of asymmetric double-curvature thick plate forming and manufacturing, and discloses an asymmetric double-curvature thick plate blank unfolding method for an overall pressing forming process. According to the method, the stress neutral layer is selected as the unfolded curved surface, the area change before and after the stress neutral layer is unfolded is small, the unfolding precision is improved through the unfolded curved surface of the stress neutral layer, and the more accurate blank shape and size can be obtained. According to the method, the problem of inward movement of the neutral layer in the forming process of the double-curvature thick plate is considered, and the accurate stress neutral layer curved surface can be obtained by calculating the curvature radius of the stress neutral layer of each discrete point. According to the method, the more accurate blank shape and size can be obtained, excessive trimming allowance does not need to be added, the mate