锻压技术

材料力学性能参数对ST07Zn车用钢板拉深成形特性的影响

英文标题：Effect of material mechanics property parameters on drawing formability of STO7Zn automobile steel sheet

作者：龚红英李名尧黄金湘姚华

单位：上海工程技术大学材料工程学院材料加工工程系上海工程技术大学材料工程学院材料加工工程系上海交运股份有限公司汽车零部件分公司上海交运股份有限公司汽车零部件分公司上海201620 上海201620 上海200032 上海200032

分类号：TG386.3

出版年,卷(期):页码：2007,32(3):26-29

摘要：

为了掌握目前在汽车生产中被广泛应用的ST07Zn车用钢板的拉深成形性能,采用计算机数值模拟与物理模拟技术相结合的综合试验研究方法,着重对3种主要力学性能参数(sσ、n、r)对ST07Zn车用钢板拉深成形性能的影响进行相关试验研究。根据试验结果,获得了此3种力学性能参数(sσ、n、r)对ST07Zn车用钢板的成形性能影响的显著性:sσ值对最大成形力影响最大,r值对变形程度的影响最为显著,n值的影响居中,但适当提高这3种力学性能参数能较好地改善板料成形性能。同时,通过试验证明,采用ETA/DYNAFORM软件进行数值模拟试验能有效预测材料力学性能参数对板料拉深成形性能的影响效果。

In order to know clearly the drawing formability of STO7Zn sheet steel which is broadly applied to the automobile produces,the numerical simulation and physical simulation tests were used in the relative tests to study on the influences of three mechanics property parameters(σs、n、r) on the drawing formability of the STO7Zn steel sheet.Based on a series of tests,the notable effect of three material mechanics property parameters on the drawing formability of the STO7Zn steel sheet was gained.Properly increasing three mechanics property parameters could effectively improve the sheet forming property.The quantitative analysis were applied to study on the effects about the three material mechanics property parameters(σs、n、r).By the test results,it shows that σs value has great effect on the maximum drawing force of test steel sheet.r value can make the formability degree change evidently,and the effects of n value on the test steel sheet is the middle one among the others.At the same time,it is proved through the experiment that numerical simulation test using ETA/DYNAFORM software can effectively predict effective result of material mechanics property parameter to sheet drawing formability.

基金项目：

参考文献：

[1]耿炳玺.尽快改变镀锌板供不应求状态[J].冶金管理,2005,23(8):37-40.
[2]Keecheol.Park,Youngsuk.Kim.The Effect of Material andProcess Variable on the Stamping Formablility of Sheet Mate-rials[J].Material Processing Technology,1999,51(4):64-78.
[3]谢世坤,桂国庆,李强征,等.冲压加工的绿色体系结构和工艺评价分析.锻压技术,2006,31(5):18-21.
[4]陶宏芝.板料多道次拉深成形模拟技术研究及工艺优化[D].上海:上海交通大学,2001.
[5]王仲仁.塑性加工领域的新发展[J].金属成形工艺,2003,21(5):1-4.
[6]包向军,蒋宏范,何丹农,等.材料参数对汽车覆盖件冲压成形性能影响的数值模拟[J].机械工程材料,2001,25(7):15-17.
[7]马鸣图.我国汽车钢板研究与应用进展[J].钢铁,2001,36(8):65-69.

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