锻压技术

轧制差厚板力学性能试验及数值模拟研究

英文标题：Research on experiment and numerical simulation of mechanical properties for tailor rolled blank

作者：邓仁昡张广基刘相华

单位：东北大学

分类号：TG314

出版年,卷(期):页码：2014,39(6):32-36

摘要：

为了掌握差厚板的力学性能，在不同厚度钢板的0°，45°和90°方向取样进行拉伸试验，并对试验参数与板厚的关系曲线进行分析，绘制了应力、应变与厚度的三维曲面，并建立了相应的数学模型。利用上述试验数据，在ABAQUS有限元软件中建立差厚板的单向拉伸模型，根据有限元模拟的差厚板单向拉伸过程进行实际拉伸试验。结果表明，差厚板不同区域的力学性能差异较大；通过在应力、应变与厚度的三维曲面上插值，即可得到差厚板0°，45°和90°方向上任意厚度的力学性能参数；差厚板单向拉伸试验与模拟的缩颈位置均在试样薄区，试验与模拟的力-位移曲线吻合良好。

For grasping properties of tailor rolled blank（TRB)，the tensile experiments were conducted along 0°,45° and 90° direction of different thickness sheet drawn，and the relationship curves of experimental parameters varing with thickness were analyzed. Then the 3D figures of real stress and plastic strain varing with thickness were drawn，and relevant mathematical models were established. The above experimental data were used to establish the model of uniaxial tensile for TRB by using the finite element software ABAQUS. According to the finite element simulation of uniaxial tensile process，the actual tensile test was conducted. The results are as follows: the mechanical properties of different regions of TRB are of great differences;through linear interpolation on the 3D figure of real stress, plastic strain and thickness， the mechanical properties of different thickness of TRB along 0°, 45° and 90° direction are obtained;the necking region of TRB uniaxial tensile test and simulation are all in the thin area of tensile sample，and force-displacement curves of experiment and simulation fit well.

基金项目：

国家自然科学基金资助项目（50974039，51374069）；中央高校基本科研业务费专项资金资助项目（N130407007）

参考文献：

［1］刘相华，张广基. 变厚度轧制过程力平衡微分方程[J]. 钢铁研究学报，2012，24(4)：10-13.Liu Xianghua, Zhang Guangji. Force equilibrium differential equations for variable gauge rolling[J]. Journal of Iron and Steel Research, 2012，24(4):10-13.
［2］Liu Xianghua, Wu Zhiqiang, Fang Zhi, et al. From TRB and LP plate to variable gauge rolling:technology, theory, simulation and Experiment[J]. Materials Science Forum, 2012, (706-709):1448-1453.
［3］Liu Xianghua. Prospects for variable gauge rolling:Technolog,theory and application[J]. Journal of Iron and Steel Research International, 2011, 18(1),1-7.
［4］王梦寒，周杰，何春妃，等. 差厚拼焊板盒形件成形影响因素及焊缝移动规律[J]. 机械工程学报，2009，45 (6): 234-245.Wang Menghan, Zhou Jie, He Chunfei，et al. Weld-line movement and factors affecting formability for different thickness tailor-welded blank of square cup[J]. Journal of Mechanical Engineering, 2009，45(6): 234-245.
［5］阳德森，周杰，何春妃，等. 轿车前地板焊缝移动研究及仿真分析[J]. 热加工工艺，2009，38(21)：79-83.Yang Desen, Zhou Jie, He Chunfei，et al. Research and simulation analysis on weldline movement for front floor panel[J]. Hot Working Technology, 2009，38(21):79-83.
［6］刘相华，吴志强，支颖，等. 差厚板轧制技术及其在汽车制造中的应用[J]. 汽车工艺与材料，2011，(1)，30-33.Liu Xianghua, Wu Zhiqiang, Zhi Ying，et al. The different thickness sheet's rolling technology and its application in manufacturing[J]. Automobile Technology & Material, 2011，(1):30-33.
［7］张华伟，胡平，刘立忠，等. 影响轧制差厚板冲压成形性能的几何参数研究[J]. 机械设计及制造，2012，(4): 7-9.Zhang Huawei, Hu Ping, Liu Lizhong，et al. Research on geometric parameters affecting stamping formability of tailor rolled blank[J]. Machiney Design & Manufacture, 2012，(4):7-9.
［8］刘相华，高琼，苏晨，等. 变厚度轧制理论与应用的新进展[J]. 轧钢，2012，29(3):1-6.Liu Xianghua, Gao Qiong, Su Chen，et al. New progress of theory and application in variable gauge rolling[J]. Steel Rolling, 2012，29(3):1-6.
［9］张华伟，刘立忠，胡平，等. 轧制差厚板单向拉伸性能研究[J]. 大连理工大学学报，2012，52(5)：648-651.Zhang Huawei, Liu Lizhong, Hu Ping，et al. Research on uniaxial tension performance of tailor rolled blank[J]. Journal of Dalian University of Technology, 2012，52(5): 648-651.
［10］李艳华，杜继涛，费宏斌. 影响TRB单向拉伸的几何参数研究[J].现代制造工程，2010，(3)：83-107.Li Yanhua, Du Jitao, Fei Hongbin. Research of geometric parameters related to TRB uniaxial tension test[J]. Modern Manufacturing Engineering, 2010，(3):83-107.
［11］田野，支颖，刘相华. 差厚板退火过程的组织演变模拟研究[J]. 武汉科技大学学报：自然科学版，2013，36(1)：49-54.Tian Ye, Zhi Ying, Liu Xianghua. Simulation of microstructure evolution of CR340 TRB during annealing[J]. Journal of Wuhan University of Science and Technology：Natural Science Edition, 2013，36(1):49-54.
［12］GB/T 288.1-2010.金属材料拉伸试验第1部分：室温试验方法[S].GB/T 288.1-2010. Metallic materials—Tensile testing—Part 1: Method of test at room temperature[Ｓ].

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