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Effects of surface
and initial stresses on the bending stiffness of trilayer
plates and nanofilms
HanXing Zhu, JianXiang Wang and Bhushan Karihaloo |
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Vol. 4 (2009), No. 3, 589–604
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Abstract |
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Simple closed-form analytic solutions have been obtained for the effect of initial residual stress on the bending stiffness of a symmetric trilayer plate/beam and for the combined effect of surface elasticity and initial surface stress on the bending stiffness of a nanofilm/nanobeam. The relative effect of the initial residual stress is generally limited to the range of the material yield strain. For nanofilms and nanobeams, the effect of the surface elasticity reduces with an increase in the thickness, but the initial surface stress effect can be retained at a constant level of up to the limit of elastic strain if it can be controlled, for example by the application of an electrical potential. |
Keywords
residual stress, bending stiffness, surface effect,
nanoplate, nanobeam
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Milestones
Received: 1 December 2008
Revised: 20 December 2008
Accepted: 31 December 2008
Published: 8 June 2009
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Authors |
| HanXing Zhu | |
| School of Engineering Cardiff University Cardiff CF24 3AA United Kingdom |
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| JianXiang Wang | |
| LTCS and Department of Mechanics and
Engineering Science College of Engineering Peking University Beijing 100871 China |
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| Bhushan Karihaloo | |
| School of Engineering Cardiff University Cardiff CF24 3AA United Kingdom |
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