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- W1968197950 endingPage "782" @default.
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- W1968197950 abstract "There exist two frameworks of strain gradient plasticity theories to model size effects observed at the micron and sub-micron scales in experiments. The first framework involves the higher-order stress and therefore requires extra boundary conditions, such as the theory of mechanism-based strain gradient (MSG) plasticity [J Mech Phys Solids 47 (1999) 1239; J Mech Phys Solids 48 (2000) 99; J Mater Res 15 (2000) 1786] established from the Taylor dislocation model. The other framework does not involve the higher-order stress, and the strain gradient effect come into play via the incremental plastic moduli. A conventional theory of mechanism-based strain gradient plasticity is established in this paper. It is also based on the Taylor dislocation model, but it does not involve the higher-order stress and therefore falls into the second strain gradient plasticity framework that preserves the structure of conventional plasticity theories. The plastic strain gradient appears only in the constitutive model, and the equilibrium equations and boundary conditions are the same as the conventional continuum theories. It is shown that the difference between this theory and the higher-order MSG plasticity theory based on the same dislocation model is only significant within a thin boundary layer of the solid." @default.
- W1968197950 created "2016-06-24" @default.
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- W1968197950 creator A5053162142 @default.
- W1968197950 date "2004-04-01" @default.
- W1968197950 modified "2023-10-14" @default.
- W1968197950 title "A conventional theory of mechanism-based strain gradient plasticity" @default.
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- W1968197950 doi "https://doi.org/10.1016/j.ijplas.2003.08.002" @default.
- W1968197950 hasPublicationYear "2004" @default.