期刊
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
卷 71, 期 5-8, 页码 1247-1262出版社
SPRINGER LONDON LTD
DOI: 10.1007/s00170-013-5530-8
关键词
Necking; Strain localization; Anisotropic elasto-plasticity; Large strain; Formability; Forming limit diagram
资金
- French National Research Agency ANR under project FORMEF
- Centre National de la Recherche Scientifique
- Region Lorraine
The prediction of forming limit diagrams (FLDs) is of significant interest to the sheet metal forming industry. Although a large variety of plastic instability criteria have been developed during the previous decades, there is still a lack of comparison of their respective theoretical bases. The aim of this paper is to present the theoretical formulations of a representative selection of diffuse necking and strain localization criteria based on the maximum force principle, the Marciniak-KuczyAski method and the bifurcation approach. The theoretical foundations and underlying assumptions for each criterion are specified prior to their application to several materials to determine the associated FLDs. The capability of the criteria to predict the formability of thin metal sheets is discussed and a classification of some of the criteria is attempted according to their order of occurrence in terms of the localization prediction.
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