科研之友
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摘要
The formability of the clad metal sheets is influenced by many factors such as mechanical properties of the component metals, so that producing clad cups with high formability free of defects is not easily possible. The behavior of clad sheet, vis-A -vis single-layer sheets, is comprehensively studied through experimental as well as numerical methods using the finite element analysis. In this study, the limiting draw ratio and thickness variations of copper-stainless-steel 304L clad metal sheet have been investigated. Finite element simulations were conducted to study the process and to predict the fracture position. The experimental results in various conditions were compared and the desirable state was recognized. Results illustrated that the thickness distribution of stronger material (stainless-steel 304L) was somewhat more uniform than the weaker one (copper layer). It is demonstrated that the strain distributions in the deep-drawn cups obtained by the FE method can be used to predict the location of fracture in the experimental tests. Furthermore, it was found that the formability of clad sheets, in different layout settings, with respect to various parameters, followed the same trends as single-layer sheets.
- 出版日期2016-1
