English

Weighted asymptotic Korn and interpolation Korn inequalities with singular weights

Analysis of PDEs 2017-10-10 v2

Abstract

In this work we derive asymptotically sharp weighted Korn and Korn-like interpolation (or first and a half) inequalities in thin domains with singular weights. The constants KK (Korn's constant) in the inequalities depend on the domain thickness hh according to a power rule K=Chα,K=Ch^\alpha, where C>0C>0 and αR\alpha\in R are constants independent of hh and the displacement field. The sharpness of the estimates is understood in the sense that the asymptotics hαh^\alpha is optimal as h0.h\to 0. The choice of the weights is motivated by several factors, in particular a spacial case occurs when making Cartesian to polar change of variables in two dimensions.

Keywords

Cite

@article{arxiv.1709.05040,
  title  = {Weighted asymptotic Korn and interpolation Korn inequalities with singular weights},
  author = {Davit Harutyunyan and Hayk Mikayelyan},
  journal= {arXiv preprint arXiv:1709.05040},
  year   = {2017}
}