Abstract
Based on Ilyushin’s postulate, this paper deals with the necessity and features of researching the geotechnical elasto-plastic theory in strain space. In the paper, we established the relations between stress in variants and elastic strain invariants, brought about the transformation from the stress yield surfaces into the strain yield surfaces, derived and discussed the strain expressions from 12 yield criteria expressed by stress. By normality rule, we also derived 12 constitutive relations for ideal plastic materials associated with the above expressions. The results presented here can be applied to practice and are helpful to the study of the plastic theory in strain space.
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Abbreviations
- ε = [ε 11 ε 22 ε 33 ε 13 ε 31 ε 12]T σ = [σ 11 σ 22 σ 33 σ 13 σ 31 σ 12]T D:
-
elastic matrix
- I 1, I 3 :
-
the first and third invariant of stress tensor
- J 2 :
-
the second invariant of deviatoric stress
- θ σ, θ 691-3:
-
the Lode angle in the stress space and elastic strain space
- Kα :
-
non-reversible internal variable
- I 691-4:
-
the first invariant of elastic strain tensor
- J 691-5, J 691-6:
-
the second and third invariant of elastic strain deviatoric tensor c cohesion
- γc= 2(1 + μ)c/E e 691-7:
-
component of elastic strain deviator
- C=D−1 εp :
-
plastic strain
- εc = ε − εp :
-
elastic strain
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Communicated by Xue Da-wei and Pan Li-zhou.
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Chang-an, C., Ying-ren, Z. Geotechnical yield criteria and constitutive relations in strain space. Applied Mathematics and Mechanics 6, 691–699 (1985). https://doi.org/10.1007/BF03250490
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DOI: https://doi.org/10.1007/BF03250490