针对射线法在展开具有弯曲特征的板金零件时常出现的展开方位错误以及展开区域重叠等问题,在充分考虑了具有弯曲特征的板金零件材料弯曲变形特点的基础上,提出了以多参考点分区展开的思路和方法,建立了能考虑板金零件弯边外法向方向的射线分区展开算法,以此体现材料的弯曲变形特征,通过实例测试,所提出的展开算法高效、实用,并有效解决了展开方位错误和展开区域重叠问题,所得到的零件毛坯形状合理正确,为一步法快速分析优化提供了良好的初值.
To solve the problems of wrong developed direction and location as well as the overlap of developed zones in the radial spreading process of sheet metal components with curved feature, by considering the related bending deformation process, a new radial spreading approach based on multi-referenced points with the con-sideration of outside normal direction of bended parts is developed, which can describe the bending process ef-fectively. The effectiveness of this approach especially in dealing with the above problems is validated by prac-tical application. The obtained blank shape is reasonable, and it can provide a better initial guess value for the one-step quick analysis and optimization.
参考文献
| [1] | 陈卫彬 .基于反向模拟法的拉深成形性分析技术研究[D].西北工业大学,2003. |
| [2] | 吴建军,李顺平.两种拉深件毛料展开方法在"一步法"分析中的应用[J].中国机械工程,2004(13):1195-1197. |
| [3] | 柳玉起,杜亭,章志兵.板料冲压成形快速分析软件FASTAMP[J].材料科学与工艺,2004(04):353-356. |
| [4] | 吴建军.正交异性板料拉深件快速展开与成形模拟[J].材料科学与工艺,2008(01):11-13. |
| [5] | 吴建军,杨汉平.考虑外法向的钣金零件展开方法研究[J].中国机械工程,2006(15):1546-1549. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%