Experimental investigation of sheet metal formability under various strain rates
Experimental investigation of sheet metal formability under various strain rates
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DOI：
10.1243/09544054jem1430
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发表时间：
2009-03
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影响因子：
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通讯作者：
B. M. Dariani;Gholamhossein Liaghat;Mahdi Gerdooei
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文献类型：
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作者：
B. M. Dariani;Gholamhossein Liaghat;Mahdi Gerdooei
摘要金属板材的成形性常采用成形极限图（FLD）进行评定。本文通过三组不同的实验，研究了成形速度对Al 6061-T6和AISI 1045板材成形激光熔滴成形的影响。除了在准静态条件下确定常规FLD之外（结果表明，虽然可以获得铝板的高应变速率成形性的实质性改善，但是对于钢板，这种改善并不显著。同时，在工具与板料之间的接触压力的作用下，钢板和铝板的冲击成形性都有所提高。
Abstract Formability of sheet metals is often assessed by means of forming limit diagrams (FLD). In this paper, performing three different series of experiments, the effect of forming velocity on FLDs is investigated experimentally for Al 6061-T6 and AISI 1045 sheets. In addition to determining the conventional FLDs at quasi-static condition ( The results show that while a substantial improvement in high strain rate formability of the aluminium sheet can be obtained, this improvement is not considerable for the steel sheets. Also, under the effect of contact pressure between tool and sheet, the formability increases for both steel and aluminium sheets on impact.