On the Convergence of Finite Element Method with Different Extension-Compression Elastic Modulus

For finite element method with different extension-compression modulus,this paper discusses the influence of modulus of elasticity in shear on the convergence of numerical calculation, and puts forward a method relating not only the sign but also the dimension of the principal stress to the modulus of elasticity in shear. On the above basis, a factor η is proposed to accelerate convergence. By using this η in the numerical calculations of different modulus problems, it is found that the convergence velocity can be obviously accelerated.