Jahed, Hamid2006-07-282006-07-2819971997http://hdl.handle.net/10012/167application/pdf10444419 bytesapplication/pdfenCopyright: 1997, Jahed, Hamid. All rights reserved.Harvested from Collections CanadaA variable material property approach for elastic-plastic analysis of proportional and nonproportional loadingDoctoral Thesis