摘要
板料渐进成形极限图和传统成形极限图有显著不同,到目前为止尚未有统一的测试方法。提出了一种测试板料渐进成形极限图的方法,成形工具分别沿往复圆弧和交替往复圆弧轨迹运动,对0.9mm工业纯铝板进行渐进成形。板料破裂后,获得了主应变和次应变,建立了该种板料渐进成形极限图。通过板料渐进成形分别成形了一些零件,测量了零件的主应变和次应变并绘制了它的渐进成形极限图。结果表明,所获得的工业纯铝渐进成形极限图能较为准确地预测渐进成形中板料的破裂,测试方法适用于渐进成形极限图的建立。
There is obviously difference between the conventional forming limit diagram （FLD） and the incremental sheet forming （ISF） FLD. And there has been anconsistent methad of mesasuring the ISF FLD up to now. A new experiment method of measuring the ISF FLD was proposed. The forming tool move along a reciprocating arc trace and an alternate reciprocating arc trace to form an aluminium sheet with 0.9 mm in thickness respectively. After the sheet frastured, the major and minor strain were obtained to establish the ISF FLD of the tested aluminium sheet. Some parts were formed by ISF. Local major and minor strain of the parts were measured and drawn in the ISF FLD of the tested aluminium sheet. The results show that the ISF FLD of the tested aluminium sheet can predicte fractue better and the new method is suited to measure the ISF FLD of sheet.
出处
《热加工工艺》
CSCD
北大核心
2013年第7期11-13,17,共4页
Hot Working Technology
基金
国家自然科学基金项目(51205217)
材料成形与模具技术国家重点实验室开放基金项目(2011-P07)
山东省高等学校科技计划项目(J10LD13)
关键词
渐进成形
成形极限图
加工轨迹
应变
incremental sheet forming
forming limit diagram
tool path
strain
