A non-local asymptotic theory for thin elastic plates

作者:Chebakov R; Kaplunov J*; Rogerson G A
来源:Proceedings of the Royal Society A-Mathematical Physical and Engineering Sciences, 2017, 473(2203): 20170249.
DOI:10.1098/rspa.2017.0249

摘要

The three-dimensional dynamic non-local elasticity equations for a thin plate are subject to asymptotic analysis assuming the plate thickness to be much greater than a typical microscale size. The integral constitutive relations, incorporating the variation of an exponential non-local kernel across the thickness, are adopted. Long-wave low-frequency approximations are derived for both bending and extensional motions. Boundary layers specific for non-local behaviour are revealed near the plate faces. It is established that the effect of the boundary layers leads to the first-order corrections to the bending and extensional stiffness in the classical two-dimensional plate equations.

  • 出版日期2017-7-1