Research output: Contribution to journal › Article › peer-review
Dependence of the yield point of polymer materials on hydrostatic pressure and certain plasticity criteria. / Gol'dman, A. Ya; Freidin, A. B.; Lebedev, A. A.
In: Strength of Materials, Vol. 15, No. 3, 03.1983, p. 373-377.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Dependence of the yield point of polymer materials on hydrostatic pressure and certain plasticity criteria
AU - Gol'dman, A. Ya
AU - Freidin, A. B.
AU - Lebedev, A. A.
PY - 1983/3
Y1 - 1983/3
N2 - 1. The yield criteria recommended for polymers, in which the effect of hydrostatic pressure is formally reflected, are insufficiently reliable and can be used in engineering computations only for special cases of loading. 2. The strength criteria of polymer materials should be included as an independent parmeter of the third invariant of the stress deviator. To define the structure of the criterion more precisely, it is necessary to acquire in a rational manner experimental data on the mechanical properties of polymers in a complex stressed state. 3. A discontinuity in the convexity of the limiting surface, which is associated with structural changes in the material and with a change in the deformation mechanisms of the polymers at high levels of hydrostatic pressure, is observed experimentally.
AB - 1. The yield criteria recommended for polymers, in which the effect of hydrostatic pressure is formally reflected, are insufficiently reliable and can be used in engineering computations only for special cases of loading. 2. The strength criteria of polymer materials should be included as an independent parmeter of the third invariant of the stress deviator. To define the structure of the criterion more precisely, it is necessary to acquire in a rational manner experimental data on the mechanical properties of polymers in a complex stressed state. 3. A discontinuity in the convexity of the limiting surface, which is associated with structural changes in the material and with a change in the deformation mechanisms of the polymers at high levels of hydrostatic pressure, is observed experimentally.
UR - http://www.scopus.com/inward/record.url?scp=34250149241&partnerID=8YFLogxK
U2 - 10.1007/BF01523186
DO - 10.1007/BF01523186
M3 - Article
AN - SCOPUS:34250149241
VL - 15
SP - 373
EP - 377
JO - Strength of Materials
JF - Strength of Materials
SN - 0039-2316
IS - 3
ER -
ID: 89706549