According to high strain gradients characteristic at the junction between pressure vessel and nozzle,based on simulating shape plate of pressure vessel nozzle,weak-conforming element models are established for two types of special shape plates,which satisfied weak continuous conditions between elements.

In this paper,Conforming finite element methods for a class of nonstationary problem are proposed.

The authors consider the second-order non-selfadjoint and indefinite elliptic boundary value problems solved by the conforming finite element, and obtain the maximum-norm estimate for the finite element solutions and a superconvergence estimate at the interpolation stress optimal points.

Refined nonconforming element method using Cartesian interpolation;

Methods Use the method of unit-coordination to study the spatial and structural charac- teristics and development trends of the city-town system in the condition of the broken terrain and propose the idea of taking"the loess tablelands"as the coordinating units of the city-town system.

Investigation of internal parameter type incompatible elements with rotational degrees of freedom;

Contra-solution of solving displacement basic formulae of incompatible element;

Annotation about inner degrees of freedom of incompatible element;

Analysis of simulating special-shaped plates at the pressure vessel nozzle by the quasi-conforming element method;

On the weak continuity condition of the quasi-conforming element method and its variational principle;

This paper explains that the weak form of the basic equations of elasticity is the inherent nature of the quasi-conforming element on the basis of the basic equation of weak forms.