Abstract
A simple method is established to determine the microscale uniaxial stress–strain curve from the load and deflection data for a doubly clamped beam. The method is based on the fact that, for beam deflection much larger than the beam thickness, the axial stretching dominates the deformation in the doubly clamped beam and the doubly clamped beam behaves like a simple plastic hinge. The microscale uniaxial stress–strain curve, together with the cantilever beam experiments, is used to determine the strain gradient effect in Au thin beams. The effect of finite rotation is also discussed.
Original language | English |
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Pages (from-to) | 1606-1624 |
Number of pages | 19 |
Journal | International Journal of Plasticity |
Volume | 24 |
Issue number | 9 |
Early online date | 12 Jan 2008 |
DOIs | |
Publication status | Published - Sept 2008 |
Keywords
- Strain gradient effect
- Thin beam
- Microscale uniaxial stress–strain curve