On the assumption that the yield criterion of orthotropic materials is isomorphic withHuber-Mises criterion of isotropic materials,we put forward a dimensionles
This paper proposes a new method to improve the stability condition of differencescheme of a parabolic equation.Necessary and sufficient conditions of the stabi
The authors of[1]discussed the subharmonic resonance bifurcation theory ofnonlinear Mathieu equation and obtained six bifurcation diagrams in(α,β)-plane.Inthi