加载路径是影响管件液压成形结果的关键因素,为了快速准确地确定管件液压成形中的加载路径,提出了利用理论计算与数值模拟相结合的方法来优化和调整成形的加载路径,确定最佳的成形区间.根据塑性力学理论计算出成形的初始内压,确定出成形区间,然后调整不同的轴向补料量进行数值模拟,并根据数值模拟的分析结果确定最佳的补料量,最终通过调节加载路径的斜率,获得合理的成形加载路径.实验结果表明:针对非对称结构的空心轴类件的液压成形,应用本方法快速地确定出合理的加载路径,零件顺利成形,且成形零件的减薄率在整个成形区间里是最小的.
Loading path is the key factor affecting the tube hydroforming,an effective method is described to quickly determine the optimal loading paths for a hydroforming nonsymmetrical component through numerical simulation and theoretical calculation.According to the theory of plastic mechanics,the engineering computational expression of internal pressure is proposed in the initial stage and the reasonable forming region is determined.By adjusting different axial feeds,the reasonable axial feed is given by simulating results.And then the optimal loading path is obtained by adjusting the slope.The experimental results show that the optimal loading path determined by this method can make the nonsymmetrical components formed successfully and the maximum thinning rate is the smallest among the formation zone in tube hydroforming process.
参考文献
| [1] | M. Imaninejad;G. Subhash;A. Loukus .Loading path optimization of tube hydroforming process[J].International Journal of Machine Tools & Manufacture: Design, research and application,2005(12/13):1504-1514. |
| [2] | 苑文婧,王小松,苑世剑.变径管内高压成形的厚度分界圆[J].材料科学与工艺,2008(02):196-199,203. |
| [3] | 初冠南,王小松,刘钢,苑世剑,葛建国.差厚拼焊管内高压成形焊缝移动规律[J].材料科学与工艺,2008(01):26-30. |
| [4] | 程东明,滕步刚,郭斌,苑世剑.Y型三通管内高压成形壁厚分布规律[J].材料科学与工艺,2007(06):750-753. |
| [5] | 刘钢,苑世剑,王小松,苗启斌.加载路径对内高压成形件壁厚分布影响分析[J].材料科学与工艺,2005(02):162-165. |
| [6] | W. Rimkus;H. Bauer;M. J. A. Mihsein .Design of load-curves for hydroforming applications[J].Journal of Materials Processing Technology,2000(1):97-105. |
| [7] | P. Ray;B.J. Mac Donald .Determination of the optimal load path for tube hydroforming processes using a fuzzy load control algorithm and finite element analysis[J].Finite elements in analysis & design,2004(2):173-192. |
| [8] | Kuang-Jau Fann;Pou-Yuan Hsiao .Optimization of loading conditions for tube hydroforming[J].Journal of Materials Processing Technology,2003(1/3):520-524. |
| [9] | 张永,赵升吨,张志远,张成伟.遗传算法结合有限元模拟对液压胀形加载路径的优化[J].塑性工程学报,2008(01):18-23. |
| [10] | 杨兵,张卫刚,林忠钦.一种管件液压成形加载路径的设计方法[J].上海交通大学学报,2006(06):893-897. |
| [11] | 邱建新,张士宏,李国禄,李章刚,张金利.均匀设计法、神经网络和遗传算法结合在内高压成形工艺参数优化中的应用[J].塑性工程学报,2005(04):76-79. |
| [12] | 林俊峰,苑世剑,刘钢,王仲仁.内高压成形技术在汽车工业中的应用[J].材料科学与工艺,2004(05):532-535. |
| [13] | 徐永超,陈宇,苑世剑.半球底筒形件充液拉深加载路径优化研究[J].哈尔滨工业大学学报,2008(07):1076-1080,1172. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%