Transactions of Materials and Heat Treatment

Title：Numerical simulation of bending process for large marine bending machine

Authors： CHEN Lan ZHANG Xin-zhou SUN Yu CHANG Xin YANG Shu-tian

Unit： Nanjing University of Science and Technology Tai`an Hualu Metalforming Machine Tool Co. Ltd.

KeyWords： bending machine roll\|bending process spring\|back down force drive torque

ClassificationCode：TH123

year,vol(issue):pagenumber：2011,36(5):76-80

Abstract：

The bending and spring-back process of a certain large marine bending machine was successfully simulated by using the finite element software ABAQUS and distributions of the stress and the strain were obtained. The impact of the press displacement of the upper roller on the forming process of bending machine was studied. The normal contact pressure between the roller and sheet metal in the bending process was analyzed, the simulative results and the theoretical calculation were compared, and the reasons of errors were analyzed. At the same time, the tangential friction between the roller and sheet metal was obtained, and then the drive torque was calculated. The calculated results provide the basis for the choice of the power system of the bending machine. The obtained achievements are useful for the optimal design of bending machine equipments and the practical sheet forming process study in general.

Funds：

国家科技重大专项资助项目（2010ZX04004-122）

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