A modified Swift law for prestrained materials

• Type: Article in International Scientific Journal
• Date: 1998

Authors

Fernandes, JV (Author) Other; Rodrigues, DM (Author) Other; Menezes, LF (Author) Other; Vieira, MF (Author) FEUP

Journal

Title: International Journal of Plasticity

Vol. 14

Pages: 537-550

ISSN: 0749-6419

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 32 Citations

ISI Web of Science

Scopus - 36 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-001-99Q

DOI: 10.1016/s0749-6419(98)00027-8

Abstract (EN): A modified Swift law to describe the evolution of the mechanical behaviour in reloading of prestrained materials is proposed in this work. This equation is deduced from the original Swift law by including a parameter that accounts for the effect of strain path change. This parameter depends on the value of the yield stress and the subsequent work-hardening behaviour in reloading. The new equation predicts well the general mechanical behaviour in the second path for cop per and steel. In particular, it predicts accurately the strain value for which necking occurs during reloading and fits experimental stress-strain curves well. The flow equation formulated remains sufficiently simple to be applied in finite element modelling of prestrained materials. However, since the parameter, which is needed for the modified Swift law, must be previously known, the strain path change itself cannot be part of the simulation.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14