为提高拼焊板成形性,用单拉实验来研究拼焊板焊缝方向对其拉伸性能的影响.采用解析、实验和有限元法研究了拼焊板焊缝方向对其综合延伸率、失效模式的影响.结果表明,当焊缝角度较小时,失效表现为焊缝开裂;随着焊缝角度增大,平均延伸率非线性减小,且变化速率逐渐减小.当焊缝角度超过一定值后,失效变为薄侧母材开裂,并随着焊缝角度增大拼焊板综合延伸率逐渐增大,且增大的速率逐渐减小.在失效模式转换时,焊缝角度相应存在一个临界点,这一临界角度大小主要依赖于焊缝和薄侧母材性能.适当的焊缝角度有利于拼焊板成形性能的提高和失效模式的控制.
参考文献
| [1] | Sadok Gaied;Jean-Marc Roelandt;Fabrice Pinard;Francis Schmit;Mikhael Balabane .Experimental and numerical assessment of Tailor-Welded Blanks formability[J].Journal of Materials Processing Technology,2009(1):387-395. |
| [2] | R.J. Pallett;R.J. Lark .The use of tailored blanks in the manufacture of construction components[J].Journal of Materials Processing Technology,2001(1/2):249-254. |
| [3] | W. Chen;G. S. Lin;S. J. Hu .A comparison study on the effectiveness of stepped binder and weld line clamping pins on formability improvement for tailor-welded blanks[J].Journal of Materials Processing Technology,2008(1/3):204-210. |
| [4] | Sushanta Kumar Panda;D. Ravi Kumar;Harish Kumar;A. K. Nath .Characterization of tensile properties of tailor welded IF steel sheets and their formability in stretch forming[J].Journal of Materials Processing Technology,2007(2/3):321-332. |
| [5] | Lee, Wonoh;Chung, Kyung-Hwan;Kim, Daeyong;Kim, Junehyung;Kim, Chongmin;Okamoto, Kazutaka;Wagoner, R. H.;Chung, Kwansoo .Experimental and numerical study on formability of friction stir welded TWB sheets based on hemispherical dome stretch tests[J].International Journal of Plasticity,2009(9):1626-1654. |
| [6] | C. H. Cheng;L. C. Chan;C. L. Chow;T. C. Lee .Experimental investigation on the weldability and forming behavior of aluminum alloy tailor-welded blanks[J].Journal of laser applications,2005(2):81-88. |
| [7] | P.A.Friedman;G.T.Kridli .Microstructural and Mechanical Investigation of Aluminum Tailor-Welded Blanks[J].Journal of Materials Engineering and Performance,2000(5):541-551. |
| [8] | Cheng CH;Chan LC;Chow CL .Weldment properties evaluation and formability study of tailor-welded blanks of different thickness combinations and welding orientations[J].Journal of Materials Science,2007(15):5982-5990. |
| [9] | Scott D. Raymond;Peter M. Wild;Christopher J. Bayley .On modeling of the weld line in finite element analyses of tailor-welded blank forming operations[J].Journal of Materials Processing Technology,2004(1):28-37. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%