采用固有应变法预测超薄板的焊接变形
Prediction of welding distortion in extra thin plate joint by means of inherent strain method
-
摘要: 文中以汽车制造中常用的1 mm厚的薄板为分析对象,采用热-弹-塑性有限元分析了焊缝长度对固有变形分布特征的影响,通过比较热-弹-塑性有限元法及固有应变法预测的变形结果,定量分析了焊缝长度对固有应变法预测超薄板焊接变形时计算精度的影响.结果表明,当焊缝长度达到一定临界长度时,固有应变法可适用于板厚为1 mm左右超薄板焊接接头的焊接变形预测.Abstract: Because the stiffness of extra thin-plate welded joint or structure is very small, welding distortion is apt to generate after welding. Therefore, it is very meaningful to predict welding-induced deformation accurately in such welded joint. Inherent strain method is a practical approach which can be used to predict welding deformation in large and complex structures. However, this method is seldom employed to estimate welding deformation in extra thin-plate joints. In this study, the features of inherent strain distribution in bead-on joint with 1 mm thickness was investigated by means of thermal elastic plastic finite element (T-E-P FE) models. Meanwhile, the influence of weld length on the distribution of inherent strain was also clarified. Moreover, the welding deformation in extra thin-plate joints with different weld lengths was calculated by using inherent strain method. The comparison between the results obtained by inherent strain method and those computed by T-E-P FE models shows that when the weld length is up to a critical value, the inherent strain method can be used to predict welding deformation in the extra thin-plate joints.
-
Keywords:
- extra thin plate /
- length of weld /
- inherent strain /
- welding deformation /
- finite element
-
-
[1] 王炎金, 丁国华, 王俊玖. 铝合金车体制造技术在中国的发展现状和展望[J]. 焊接, 2004(10): 5-7. Wang Yanjin, Ding Guohua, Wang Junjiu. Status and Prosperct of Manufacture Technology About Aluminium Alloy Bodywork[J]. Welding & Joining, 2004(10): 5-7. [2] Ueda Y, Murakawa H, Ma N.Welding deformation and residual stress prevention[M]. Amsterdam: Elsevier, 2012. [3] 梁 伟, 邓德安, Murakara Hidekazu. 铝合金薄板固有变形逆解析方法的研究与开发[J]. 中国有色金属学报, 2015(11): 3011-3018. Liang Wei, Deng Dean, Murakawa Hidekazu. Investigation and develepment of inverse analysis method to estimate inherent deformation of Al-alloy thin-plate joint the concept of the inherent strain and the application in ship industry[J]. The Chinese Journal of Nonferrous Metals, 2015(11): 3011-3018. [4] Deng D, Murakawa H, Liang W, Prediction of welding distortion in a curved plate structure by means of elastic finite element method[J]. Journal of Materials Processing Technology, 2008 (203): 252-266. [5] 梁 伟, 村川英一. T形焊接接头固有变形逆解析方法的开发[J]. 焊接学报, 2013, 34 (10): 79-82. Liang Wei, Murakawa H. An inverse analysis method to estimate inherent deformation in T-fillet welded joints[J]. Transactions of the china welding institution, 2013, 34(10): 79-82. [6] Goldak J, Chakravariti A, Bibby M. A new finite element model for welding heat sources[J]. Metallurgiacl Tetallurgical Transactions, 1984(15): 299-305. -
期刊类型引用(14)
1. 邵晨东,马江坤,黄舒宇,兰玲,吴广明,芦凤桂. 曲面三明治结构激光焊接变形数值模拟研究. 机械工程学报. 2025(06): 121-132 . 百度学术
2. 李又春,胡加敏,宾浩宇,张运鑫,李建军,陈雯. 波瓣焊接组合零件整体成型工艺与模具技术. 模具技术. 2024(05): 70-75 . 百度学术
3. 张鑫,马康,朱亚蓉,范紫龙,李洋,王超. 运载火箭超薄椭球箱底环缝焊接变形研究. 焊接技术. 2024(12): 56-60+146 . 百度学术
4. 李岩,刘琪,李艳彪,张艳峰,田孟良,吴志生. 外部约束对薄壁高温合金尾喷管焊接变形的影响. 材料热处理学报. 2023(08): 175-185 . 百度学术
5. 李岩,刘琪,李艳彪,张艳峰,田孟良,吴志生. 薄壁GH3536尾喷管组焊变形控制工艺优化仿真. 稀有金属材料与工程. 2023(08): 2775-2782 . 百度学术
6. 周宏,冒凯凡,吴泰峰,徐宏伟,刘建峰,马网扣. 激光功率对激光-电弧复合焊接头成型的影响. 造船技术. 2022(01): 52-56 . 百度学术
7. 王超,吴春彪,邵龙潭. 焊接变形预测中基于假定热应变法的弹性有限元建模. 机械工程学报. 2022(04): 111-119 . 百度学术
8. 梁伟,孙晓露. 基于切断技术的固有变形获取方法研究. 机械工程学报. 2020(08): 92-98 . 百度学术
9. 张景祺,林健,雷永平,许海亮,王细波. 316L超薄板激光焊接的失稳变形规律. 材料工程. 2020(12): 126-134 . 百度学术
10. 陆瑶,许莎,邢彦锋. 6061铝合金/DP590钢冷金属过渡焊接工艺参数优化与变形预测. 机械工程材料. 2019(04): 25-29 . 百度学术
11. 郭威,赵雷,徐连勇,韩永典. 高温蠕变下表面多裂纹扩展行为. 焊接学报. 2019(08): 44-49+163 . 本站查看
12. 王素节,马颖珊,史良宇,孙彦彬,段承鑫,贾博元. 钢制薄板T型梁焊接变形及焊接残余应力数值仿真. 机械研究与应用. 2019(06): 1-4 . 百度学术
13. 李磊,麻长胜,张敏,张正义. 一种减小铜底板弯曲度的冲压方法. 锻压技术. 2019(11): 80-85 . 百度学术
14. 王梓名,邢彦锋,许莎,金光灿,倪萍. 铝钢混联薄板件CMT焊接变形预测及控制. 上海工程技术大学学报. 2018(02): 97-103 . 百度学术
其他类型引用(25)
计量
- 文章访问数: 384
- HTML全文浏览量: 41
- PDF下载量: 244
- 被引次数: 39