Journal of Theoretical
and Applied Mechanics

53, 2, pp. 345-356, Warsaw 2015
DOI: 10.15632/jtam-pl.53.2.345

STATIC AND SENSITIVITY ANALYSIS OF NONLOCAL NANOBEAMS SUBJECT TO LOAD AND MATERIAL UNCERTAINTIES BY CONVEX MODELING

Isaac Sfiso Radebe, Sarp Adali
At the nano-scale, loads acting on a nanobeam and its material properties are likely to be
not known precisely, i.e., uncertain. In the present paper, the deflection of a nanobeam sub-
ject to load and material uncertainties is studied by convex modeling of the uncertainties.
The level of uncertainty is taken to be bounded and the maximum deflection corresponding
to the worst-case of loading or material properties is obtained, that is, the uncertainties are
determined so as to maximize the deflection. The sensitivity of the deflection to the uncer-
tainty in the material properties is also investigated. Numerical results are given relating
the level of uncertainty to maximum deflection.
Keywords: nanobeams, load uncertainty, material uncertainty, convex modeling, sensitivity