A modified couple stress model to analyze the effect of size dependence on thermal interactions in rotating nanobeams whose properties change with temperature
Abstract
In this article, the importance of studying the behavior of small-scale rotating materials and structures
is highlighted for its valuable contribution to many scientific and engineering fields. As a result, these types
of microbeams have been studied using nonlocal elasticity theory (NET) and modified couple stress (MCST)
models, as well as Euler–Bernoulli assumptions for thin beams. The temperature-dependent heat conduction
model and the Moore–Gibson–Thompson (MGT) model of heat transfer are also integrated. The effects of
nonlocal properties, length scale, thermal conductivity factor fluctuation, angular velocity of rotation, and
thermal parameters on the behavior of the studied variables were investigated. The results were validated and
applicable, and the data were systematically compared with previous literature and other investigators. The
results show that the materials behave differently at the nanoscale than the results of the usual continuum
mechanics approach due to taking into account nonlocal and length-scale effects.