INVESTIGATING THERMAL EFFECTS IN NONLINEAR BUCKLING ANALYSIS OF MICRO BEAMS USING MODIFIED STRAIN GRADIENT THEORY

Editorial

10.22099/ijstm.2014.2497

Abstract

In this paper, thermal effects in nonlinear buckling analysis of micro beams is
investigated. Modified strain gradient theory with nonlinear von-Karman strain-displacement
relations and small scale parameters are used to derive the buckling behavior of micro beams. The
Poisson’s effect is included and its significance is demonstrated. Buckling behavior for two
different cases: 1) immovable axial boundary condition 2) movable axial boundary condition, are
studied and for each one the results for hinged-hinged and clamped-clamped beams are presented.
The analysis shows that modified strain gradient theory leads to a higher critical buckling load in
comparison with the classical and couple- stress theories. The results are verified using previous
related works.

Keywords

Iranian Journal of Science and Technology Transactions of Mechanical Engineering
Volume 38, M2
October 2014
Pages 303-320

Files

Share

How to cite

Statistics