A THEORY OF ELASTIC, PLASTIC AND CREEP DEFORMATIONS OF AN INITIALLY ISOTROPIC MATERIAL SHOWING ANISOTROPIC STRAIN-HARDENING, CREEP RECOVERY, AND SECONDARY CREEP
Stress-strain relations are given for an initially isotropic material, which is macroscopically homogeneous, volume is considered to be composed of various portions, which can be represented by subelements showing secondary creep and isotropic work handening in plastic deformation. If the condition is imposed that all subelements of an element of volume are subjected to the same total strain, it is demonstrated that the inelastic stress-strain relations of the material show anisotropic strain-hardening, creep recovery, and primary and secondary creep due to the nonuniform energy dissipation in deformation of the subelements. Only quasi-static deformations under isothermal conditions are considered. The theory is restricted to small total strains. (auth)
- Research Organization:
- Stanford Univ., Calif.
- NSA Number:
- NSA-14-019565
- OSTI ID:
- 4174559
- Report Number(s):
- SUDAER-78; AFOSR-TN-60-384
- Country of Publication:
- United States
- Language:
- English
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