The Incremental Hybrid Natural Element Method for Elastoplasticity Problems

The Hybrid Element Method for Emc Problems in Vlsi Circuits

On the Hybrid Stress Finite Element Model for Incremental Analysis of Large Deflection Problems

Abatmct-An extension of the hybrid stress finite element model, originally suggested for linear small displacement problems by Pian, to the large deflection problem is presented. An incremental approach and the concepts of initial stress are employed. A procedure to check the equilibrium in the reference state, prior to the addition of a further load increment, is included. An example and a dis...

Circuit Models for the Hybrid Element Method

In this paper, we describe a new hybrid method which combines the boundary element method (BEM) and the nite element method (FEM) to calculate the circuit models for layout dependent capacitances in VLSI circuits. The hybrid method which we present does more than solving a particular eld problem, it produces a good physical circuit model for the interface between the regions where the BEM and t...

A Convergent Adaptive Finite Element Method for the Primal Problem of Elastoplasticity

The boundary value problem representing one time step of the primal formulation of elastoplasticity with positive hardening leads to a variational inequality of the second kind with some non-differentiable functional. This paper establishes an adaptive finite element algorithm for the solution of this variational inequality that yields the energy reduction and, up to higher order terms, the R−l...

Recent Developments in the Field- Boundary Element Method for Finite/small Strain Elastoplasticity

Abstract-In this paper, some recent works of the authors, in the area of the field-boundary element method for finite/small strain elastoplasticity [Okada, Rajiyah and Atluri (1988a) J. Appl. Mech. 55, 786-794; (1988b) Comput. Strucr. 30,275-288; (1989) Comput. Mech. 4, 165-175; (1990) Inr. 1. Numer. Meth. Engrtg 29, 15-351, are summarized. Certain new integral representations for displacement ...