期刊
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
卷 49, 期 9-12, 页码 1029-1036出版社
SPRINGER LONDON LTD
DOI: 10.1007/s00170-009-2446-4
关键词
Finite element method; Clad metal; Forming limit; Deep drawing test
资金
- Metal Industries Research & Development Centre (MIRDC)
- National Taiwan University (NTU)
- National Taiwan University of Science and Technology (NTUST)
In this research, the possibility of applying forming limit diagrams to the formability and fracture prediction of clad metal sheets is examined. The forming limits of clad metal sheets with different thickness combinations (e.g., A1050 1.0, 1.5, 2.0 mm/C1100 1.0 mm) are investigated via forming limits test (punch stretching tests). The true stress-strain curves of Al/Cu clad metal sheets are obtained through tensile tests. Using the experimental forming limit diagrams and the stress-strain curves, the fracture prediction of clad metal sheets are simulated by finite element analysis. Moreover, deep drawing tests are carried out to compare the experimental with the numerical results. These results can verify the accuracy of finite element model. Finally, significant differences in formability are found, and comparisons of the fracture prediction of clad metals with different initial thickness ratios are analyzed both numerically and experimentally.
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