Transactions of Materials and Heat Treatment

Title：Preforming design based on Fourier descriptor

Authors： Huang Chaoqun Lai Fei

Unit： Chongqing Technology and Business Institute Chongqing University of Technology

KeyWords： Fourier transform preforming design Fourier descriptor shape overlay axisymmetric forgings

ClassificationCode：TG312

year,vol(issue):pagenumber：2020,45(6):16-21

Abstract：

In order to solve the preforming design problem of axisymmetric forgings, the preforming design method based on Fourier transform theory was proposed. In this design method, the shapes of preform billet was added in Fourier space by the shapes of initial billet and final forging, and the similar degree of preform billet shape to final forgings was controlled by controlling the weight coefficient of addition. Then, the Fourier transformation of the initial billet shape and the final forging shape was conducted by converting the plane contour shape in Euclidean space into the Fourier descriptors in Fourier space, and after the weighted addition of the Fourier descriptors for the initial billet shape and the final forging shape, the inverse Fourier transform was performed to generate the new shape, which was used as the preform billet shape. Finally, an axisymmetric forging was used to test the algorithm. The test results show that the forging fills perfectly, the equivalent strain is uniform, and there are no folding and other defects.

Funds：

重庆工商职业学院科研项目资助（ZD2016-01）

黄超群(1981-),女,硕士,副教授 E-mail：hcq_ctbi@163.com

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