Acta Mechanica Solida Sinica

, Volume 22, Issue 1, pp 45–52 | Cite as

New strain gradient theory and analysis

Article

Abstract

A new strain gradient theory which is based on energy nonlocal model is proposed in this paper, and the theory is applied to investigate the size effects in thin metallic wire torsion, ultra-thin beam bending and micro-indentation of polycrystalline copper. First, an energy nonlocal model is suggested. Second, based on the model, a new strain gradient theory is derived. Third, the new theory is applied to analyze three representative experiments.

Key words

non-local model micro-indentation strain gradient theory size effect 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2009

Authors and Affiliations

  1. 1.Chinese Academy of SciencesLNM, Institute of MechanicsBeijingChina

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