Transactions of Materials and Heat Treatment

Title：Effect of clamp quantity on stretch forming for hyperbolic top part

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ClassificationCode：TG386

year,vol(issue):pagenumber：2022,47(4):91-94

Abstract：

For the hyperbolic top part, the finite element model of stretch forming with different numbers of clamps were established by finite element software ABAQUS, and the influence of the number of clamps on the forming effect of sheet metal was analyzed. The results show that when the stretch force is the same, with the increasing of the number of champs, the formability of sheet metal is better. The sheet metal stretched by the whole clamp and five clamps cannot be completely fitted the mold, and the degree of die fitting for the latter is better than that for the former. The sheet metal stretched by ten clamps and fifteen clamps can be completely fitted the die, the strain and thickness distributions of the forming part for the latter is more uniform than that for the former. The forming test of the hyperbolic top part was conducted by flexible stretch forming device, and the test results are in agreement with the numerical simulation results, which verifies the feasibility of flexible stretch forming for the hyperbolic top part and the accuracy of the numerical simulation.

Funds：

吉林化工学院重大科技项目(2019017)；吉林化工学院博士启动基金项目（2021023）

作者简介：程艳艳（1980-），女，博士，副教授 E-mail：chengyanyan1980@sina.com

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