_STP_765-1982.pdf

MECHANICAL TESTING FOR DEFORMATION MODEL DEVELOPMENT A symposium sponsored by ASTM Committee E-28 on Mechanical Testing Bal Harbour,Fla.,12-13 Nov.1980 ASTM SPECIAL TECHNICAL PUBLICATION 765 R.W.Rohde and J.C.Swearengen,Sandia National Laboratories,editors ASTM Publication Code Number(PCN)04-765000-23#1916 Race Street,Philadelphia,Pa.19103 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:07:48 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Copyright by AMERICAN SOCIETY FOR TESTING AND MATERIALS 1982 Library of Congress Catalog Card Number:81-69407 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in Baltimore,Md.April 1982 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:07:48 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Foreword The Symposium on Mechanical Testing for Deformation Model Develop-ment,sponsored by ASTM Committee E-28 on Mechanical Testing,was held in Bal Harbour,Florida,on 12-13 November 1980.R.W.Rohde and J.C.Swearengen,Sandia National Laboratories,served as symposium chairmen and have edited this publication.Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:07:48 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Related ASTM Publications stress Relaxation Testing,STP 676(1979),04-676000-23 Formability TopicsMetallic Materials,STP 647(1978),04-647000-23 Reproducibility and Accuracy of Mechanical Tests,STP 626(1977),04-626000-23 Selection and Use of Wear Tests for Metals,STP 615(1977),04-615000-23 Recent Developments in Mechanical Testing,STP 608(1976),04-608000-23 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:07:48 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.A Note of Appreciation to Reviewers This publication is made possible by the authors and,also,the unheralded efforts of the reviewers.This body of technical experts whose dedication,sacrifice of time and effort,and collective wisdom in reviewing the papers must be acknowledged.The quality level of ASTM publications is a direct function of their respected opinions.On behalf of ASTM we acknowledge with appreciation their contribution.ASTM Committee on Publications Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:07:48 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Editorial Staff Jane B.Wheeler,Managing Editor Helen M.Hoersch,Senior Associate Editor Helen P.Mahy,Senior Assistant Editor Allan S.Kleinberg,Assistant Editor Virginia M.Barishek,Assistant Editor Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:07:48 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Contents Introduction 1 IMPLICATIONS OF ExPERIMEfTAL TECHNIQUES The Role of ServocontroUed Testing in the Development of the Theory of Viscoplasticity Based on Total Strain and Overstress ERHARD KREMPL 5 Time-Independent and Time-Dependent Deformation of Metals T.H.ALDEN 29 Discussion 48 Determination of First and Second Order Work-Hardening and Rate-Sensitivity Coefficients for Oxygen-Free,High-Conductivity(OFHC)Copper and 99.99 Percent AluminumNICOLAS CHRISTODOULOU,J.J.JONAS,AND G.R.CANOVA 51 Creep of Aluminum under Combined Longitudinal and Shear Stresses J.L.GACOUGNOLLE,J.F.PELTIER,AND I.DE FOUQUET 67 Specimen-Test Machine Coupling and Its Implications for Plastic Deformation Modelsj.H.HOLBROOK,J.C.SWEARENGEN,AND R.W.ROHDE 80 Deformation Modeling and the Strain Transient Dip Test W.B.JONES,R.W.ROHDE,AND J.C.SWEARENGEN 102 PHENOMENOLOGICAL MODELING AND APPLICATIONS Strain Hardening and Strain-Rate Hardeningu.F.KOCKS 121 A Unified Creep-Plasticity Model for HaliteR.D.KRIEG 139 Experimental Investigation of Nonelastic Deformation Emphasizing Transient Phenomena by Using a State Variable Approach p.ALEXOPOULOS,R.L.KEUSSEYAN,G.L.WIRE,AND CHE-YU LI 148 Discussion 183 Prediction of Deformations During Gas-Tungsten-Arc Stationary WeldsD.B.DUNCAN AND W.H.GIEDT 185 Copyright by ASTM Intl(all rights reserved);Mon Dec 21 12:07:48 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Some Critical Experimental Tests of the MATMOD Constitutive Equations with Respect to Directional Hardening and Cyclic DeformationA.K.MILLER AND A.A.ZIAAI-MOAYYED 202 Prediction of Stress-Strain Response under General Multiaxial LoadingY.S.GARUD 223 A Relationship Between Theory and Experiment for a State Variable Constitutive Equ