Transactions of Materials and Heat Treatment

Title：Numerical analysis and simulation on stress neutral layer position of bending for wide plate based on Deform

Authors： Jin Dunshui Dong Tu

Unit： Anhui Vocational College of Electronics ＆ Information Technology Anhui TSP Mold Limited by Share Ltd.

KeyWords： wide plate stress neutral layer thinning coefficient inward shift coefficient bending deformation

ClassificationCode：THl62

year,vol(issue):pagenumber：2021,46(11):270-274

Abstract：

In order to determine the position of stress neutral layer in the bending process of wide plate and improve the forming accuracy of bending parts, by analyzing the stress of the micro element at the section of wide plate during bending, the differential equation was established by the classical mechanical analysis hypothesis, and the mathematical relationship among the position of stress neutral layer, the relative bending radius and the thinning coefficient was determined to obtain that the position of stress neutral layer shifted to the inner layer of plate during the elastic-plastic bending deformation process of wide plate. At the same time, the difference between the position of stress neutral layer and the position of center layer of medium wide plate increased with the increasing of bending moment. Furthermore, the theoretical research results were verified by software Deform and bending die design experiments, and in the process design of bending parts, the value ranges of thinning coefficient and inward shift coefficient were obtained according to the deformation degree of materials so as to guide the actual production.

Funds：

安徽省高校自然科学重点研究项目（KJ2018A0780，KJ2019A1066）；安徽省高校优秀拔尖人才资助项目（gxbjZD2020124）

作者简介：金敦水（1984-），男，硕士，副教授，E-mail：181539444@qq.com

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