Size Effect of the Single Crystal Copper Based on D-P Yield Function

Yi Hao; Lu Feng; Jing Wang

doi:10.4028/www.scientific.net/AMM.418.209

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 418Size Effect of the Single Crystal Copper Based on...

Size Effect of the Single Crystal Copper Based on D-P Yield Function

Abstract:

Studies of strain gradient plasticity theory have achieved considerable achievements in recent years. However, the combination of the mechanisms of the pressure-sensitive yielding and the size dependence of plastic deformation still remains an open challenge, especially in the relevant numerical simulation. In this paper, the finite-element formulation based on the flow theory of MSG plasticity for pressure-sensitive materials is set up. The elastic indentation response of the single crystal copper is computed using a user-defined eight-node isoparametric element through the USER-ELEMENT interface supported by the commercial software ABAQUS. The results of the numerical simulation show that the indenter load and the hardness have been slightly enhanced when the strain gradient is taken into account, compared to the results obtained from the CAX8R element.

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Periodical:

Applied Mechanics and Materials (Volume 418)

Pages:

209-212

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.418.209

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Online since:

September 2013

Authors:

Yi Hao, Lu Feng, Jing Wang

Keywords:

Elastic Indentation Response, Numerical Simulation, Pressure-Sensitive Yielding, Strain Gradient, User-Defined Element

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