Transactions of Materials and Heat Treatment

Title：Analysis on cross section deformation behaviors of high strength titanium tube TA18 in rotary draw bending process with material property variations

Authors： Fang Jun Liang Chuang Lu Shiqiang Wang Kelu Min Xuguang Hu Lili

Unit： Jiangxi Science and Technology Normal University Nanchang Hangkong University

KeyWords： high strength titanium tube TA18 material property parameters cross section deformation NC rotary draw bending FE analysis

ClassificationCode：TG386

year,vol(issue):pagenumber：2017,42(7):158-163

Abstract：

In order to study the influence rule and sensitivities of material property parameters on cross section deformation of tube in numerical control (NC) rotary draw bending process, a finite element (FE) model of high strength titanium tube TA18 in NC rotary draw bending process was established by ABAQUS software, and its reliability was validated by experiment results in literature. Then, the cross section deformation behaviors of high strength titanium tube TA18 in NC rotary draw bending process were numerically studied by the model under material property variations. The results show that the cross section deformation ratio decreases with the increasing of elastic modulus and hardening exponent or with the decreasing of strength coefficient and normal anisotropy exponent, and the decrease rates are 11.76%,23.67%,12.07% and 23.51% respectively. The maximum value of cross section deformation ratio is less than 4.00% under different material property variations, and the cross section deformation ratio shows a negative value near the bending plane. Furthermore, the sensitivities of cross section deformation ratio to material property parameters from high to low are strength coefficient, elastic modulus, hardening exponent and normal anisotropy exponent.

Funds：

江西省教育厅科学技术研究项目（GJJ150810）；轻合金加工科学与技术国防重点学科实验室开放课题研究基金项目（gf201501001）；江西科技师范大学博士科研启动基金项目（BSJJ2015015）

作者简介：方军（1984-），男，博士，讲师，E-mail：fangjun020j13@163.com；通讯作者：鲁世强（1962-），男，博士，教授，博士生导师，E-mail：niatlusq@126.com

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