Analysis of indentation size effects under strain gradient viscoplasticity

【Author】

Suman Guha;Sandeep Sangal;Sumit Basu;

【Abstract】

<正>Indentation size effects has been observed to exist in almost all micro/nano-indentation experiments.Gradient plasticity theories in general are able to capture the size effects at small scale and indentation size effects can also be simulated with these class of theories.Nix and Gao's theory predicts a linear dependence of the square of the hardness with the inverse of depth of indentation and it has been found to agree well with the micro-indentation experimental observations.However,there are several experimental

【Keywords】

Analysis of indentation size effects under strain gradient viscoplasticity;

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