摘要:
|
在材料力学性能测试和成形极限分析的基础上 ,采用网格应变分析技术研究了行李箱内板零件冲压过程危险区域的金属流动规律 ,评价了两种钢板的成形效果。结果表明 :行李箱内板危险部位的变形方式为胀形—深拉延变形 ,r值和n值较高的冷轧薄板具有较高的成形极限 ,相应地其冲压成形安全裕度也较大。
|
On the basis of material mechanical test and forming limit analysis,the metal flow of the dangerous parts in trunk lid inner panel during the stamping process are studied by grid strain analysis technique,meanwhile the forming effects of two steel sheet are evaluated.It is shown that the forming method of dangerous parts in trunk lid inner panel belongs to bulge deep drawing deformation.The cold rolled sheet with relatively high r value and n value can obtain higher forming limit,correspondingly the forming safe allowance is relatively high.
|
基金项目:
|
|
作者简介:
|
|
参考文献:
|
1 康永林 .现代汽车板的质量控制与成形性 .北京 :冶金工业出版社 ,1 999.
2 邓陟 ,王先进 .汽车用薄板的发展及对策 .钢铁 ,1 993 , 2 8(6) :73~ 78
3 于连仲 ,常志华 ,孙卫和 ,李春峰 .成形极限图FLD的简易确定 .机械工程学报 ,1 990 ,2 6 (4) :88~ 92
4 李硕本 ,崔令江 ,于连仲 ,李春峰 .板料单向拉伸失稳的研究 .锻压技术 ,1 989,1 4 (1 ) :1 5~ 1 9
|
服务与反馈:
|
【文章下载】【加入收藏】
|
|
|