Numerical analysis of the formability of an aluminum 2024 alloy sheet and its laminates with steel sheets

Journal Article · Sun Nov 01 04:00:00 EST 1998 · Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science

DOI:https://doi.org/10.1007/s11661-998-0323-7· OSTI ID:290251

Takuda, Hirohiko; Hatta, Natsuo ^[1]

---

1. Kyoto Univ. (Japan). Dept. of Energy Science and Technology

A criterion for ductile fracture is applied to the formability prediction of an aluminum 2024 alloy sheet and its laminated composite sheets. Axisymmetric deep-drawing processes of the 2024 sheet and the laminates clad by mild steel sheets are simulated by the finite-element method. From the calculated distributions and histories of stress and strain, the fracture initiation site and the forming limit are predicted by means of the ductile fracture criterion. The predictions so obtained are compared with experimental observations. The results show that the fracture initiation in the 2024 sheet with no appearance of necking is successfully predicted by the present numerical approach. Furthermore, it is found that the formability of the 2024 sheet is improved by sandwiching it with the mild steel sheets.

• Sponsoring Organization: USDOE
• OSTI ID: 290251
• Journal Information: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Journal Name: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Journal Issue: 11 Vol. 29; ISSN 1073-5623; ISSN MMTAEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
COMPOSITE MATERIALS
FINITE ELEMENT METHOD
FRACTURE PROPERTIES
PREDICTION EQUATIONS
SHEETS
SIMULATION
STEELS
TENSILE PROPERTIES
VALIDATION