Abstract
The analysis of strain-hardening materials subjected to multiaxial states of stress requires more detailed experimental information about the effects of previous plastic deformation on the yield surfaces of real materials than is presently available. To provide insight into some of these effects thin walled tubular specimens of 1100-0 aluminum and annealed OFHC copper were subjected to biaxial stresses through the application of simultaneous axial tension and internal pressure, and the effects of the magnitude, direction, and sequence of prestraining operations on subsequent yield surfaces were determined. It was found that the yield surface behavior depends greatly upon the definition of yielding employed. Use of small proof strain definitions resulted in very anisotropic yield surface characteristics which reflected the effect of previous deformation. On the other hand, use of large proof strains resulted in isotropic yield surface characteristics which were devoid of previous deformation influence. The small proof strain yield curves were found, in general, to expand and translate in the direction of prestrain and, for biaxial prestrains, to be distorted in the vicinity of the loading point. Multiple prestrain sequences in normal directions induce a large negative cross effect similar to Bauschinger effect observed under reversed loading. Such anisotropic behavior was found to contradict the two most commonly used continuum mechanics predictions, the isotropic and kinematic hardening rules.
Similar content being viewed by others
References
D. C. Drucker:Proc. 1st U.S. Nat. Congr. Appl. Mech., 1951, p. 487.
W. Prager:Proc. Inst. of Mech. Engrs., 1955, vol. 169, p. 41.
S. B. Batdorf and B. Budiansky:NACA TN1871, 1949.
T. H. Lin:Proc. 2nd U.S. Natl. Congr. Appl. Mech., 1954, p. 461.
T. H. Lin:Proc. 3rd U.S. Natl. Congr. Appl. Mech., 1958, p. 581.
W. Koiter:Quart. Appl. Math., 1953, vol. 11, p. 350.
J. L. Sanders:Proc. 2nd U.S. Natl. Congr. Appl. Mech., 1954, p. 455.
G. Backhaus:ZAMM, 1968, vol. 48, p. 99.
Z. Mroz:J. Mech. Phys. Solids, 1967, vol. 15, p. 163.
A. Baltov and A. Sawzuk:Acta Mech., 1965, vol. 1, p. 6.
G. I. Taylor and H. Quinney:Phil. Trans. Roy. Soc., 1932, vol. 230, p. 323.
T. C. Hsu:J. Strain. Anal., 1966, vol. 1, p. 331.
H. J. Ivey:J. Mech. Eng. Sci., 1961, vol. 3, p. 2.
P. M. Naghdi, F. Essenburg, and W. Koff:J. Appl. Mech., 1958, vol. 25, p. 201.
J. Parker and M. B. Bassett:J. Appl. Mech., 1964, vol. 31, p. 676.
H. G. McComb, Jr.:NASA-TN D-396, 1960.
P. K. Bertsch and W. N. Findley:Proc. 4th U.S. Natl. Congr. Appl. Mech., 1962, vol. 2, p. 893.
L. W. Hu and J. F. Bratt:J. Appl. Mech., 1958, vol. 25, p. 411.
W. M. Mair and H. Ll. D. Pugh:J. Mech. Eng. Sci., 1964, vol. 6, p. 150.
J. Miastkowski and W. Szczepinski:Int. J. Solids Structures, 1965, vol. 1, p. 198.
E. Shiratori, K. Ikegami and H. Okano:Bull. ISME, 1968, vol. 11, p. 413.
E. Shiratori and K. Ikegami:J. Mech. Phys. Solids, 1968, vol. 16, p. 373.
J. Miastkowski:Arch. Mech. Stos., 1968, vol. 3, p. 262.
W. Szczepinski and J. Miastkowski:J. Mech. Phys. Solids, 1968, vol. 16, p. 153.
S. S. Hecker, B. G. Strait, and R. M. Laing: Los Alamos Report LA-4550, Los Alamos Scientific Laboratory, Los Alamos, N.M.
J. W. Dally and W. F. Riley.Experimental Stress Analysis, p. 399, McGraw-Hill Book Co., New York, 1965.
S. S. Hecker,Microtecnic, 1971, vol. XXV, p. 49.
G. N. White and D. C. Drucker:J. Appl. Phys., 1950, vol. 21, p. 1013.
R. L. Sierakowski and A. Phillips:Acta Mech., 1968, vol. 6, p. 217.
C. S. Barrett:Structure of Metals, 2nd ed., p. 492, McGraw-Hill Book Co., New York, 1952.
J. D. Lubahn:J. Metals, 1955, vol. 205, p. 1031.
J. D. Lubahn:Trans. ASM, 1952, vol. 44, p. 643.
R. L. Whitley:Trans. ASM, 1960, vol. 52, p. 154.
W. A. Backofen, W. F. Hosford, Jr., and J. J. Burke:Trans. ASM, 1962, vol. 55, p. 264.
R. Hill:Proc. Roy. Soc., 1948, vol. 193A, p. 281.
A. W. McReynolds:Trans. AIME, 1949, vol. 185, p. 32.
S. R. Bodner and A. Rosen:J. Mech. Phys. Solids, 1967, vol. 15, p. 47.
A. Rosen and S. R. Bodner:J. Mech. Phys. Solids, 1967, vol. 15, p. 63.
B. Paul:Fracture, vol. 2, p. 313, Academic Press, New York, 1968.
J. D. Lubahn and R. P. Felgar:Plasticity and Creep in Metals, p. 286. J. Wiley and Sons, New York, 1961.
S. S. Hecker, accepted for publication inActa Mech., 1971.
E. Kröner:Appl. Mech. Rev., 1962, vol. 15, p. 599.
C. Truesdell and W. Noll:Handbuch der Physik, Springer Verlag, 1965.
R. F. Kocks:Met. Trans., 1970, vol. 1, p. 1121.
J. W. Hutchinson:Proc. Roy. Soc. London, A, 1970, vol. 319, p. 247.
G. Sachs:Z. Verein Deut. Ing., 1928, vol. 72, p. 734.
G. I. Taylor:J. Inst. Metals, 1938, vol. 62, p. 307.
Author information
Authors and Affiliations
Additional information
S. S. HECKER, formerly Postdoctoral Appointed at the Los Alamos Scientific Laboratory, Los Alamos, N. Mex.
Rights and permissions
About this article
Cite this article
Hecker, S.S. Yield surfaces in prestrained aluminum and copper. Metall Trans 2, 2077–2086 (1971). https://doi.org/10.1007/BF02917534
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02917534