Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4328
Title: A modified swift law for prestrained materials
Authors: Fernandes, J. V. 
Rodrigues, D. M. 
Menezes, L. F. 
Vieira, M. F. 
Keywords: mechanical modelling
Issue Date: 1998
Citation: International Journal of Plasticity. 14:6 (1998) 537-550
Abstract: 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 copper 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.
URI: http://hdl.handle.net/10316/4328
Rights: openAccess
Appears in Collections:FCTUC Eng.Mecânica - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
fileeef30d0e33f24e8b8cb676260e6aebe4.pdf643.92 kBAdobe PDFView/Open
Show full item record

Page view(s) 50

285
checked on Nov 6, 2019

Download(s) 10

1,099
checked on Nov 6, 2019

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.