Engineering Computations: Volume 9 Issue 3

EIGENVALUES OF ELEMENT STIFFNESS MATRICES. PART I: 2‐D PLANE ELEMENTS

D.J. KIDGER, I.M. SMITH

The eigenvalues of element stiffness matrices K and the eigenvalues of the generalized problem Kx = λMx, where M is the element's mass matrix, are of fundamental importance in…

EIGENVALUES OF ELEMENT STIFFNESS MATRICES. PART II: 3‐D SOLID ELEMENTS

D.J. KIDGER, I.M. SMITH

In Part I, eigenvalues and eigenmodes of typical plane element stiffness matrices were separated and traced. This has important implications for the viability of new elements…

PREDICTION OF THE FAILURE AND SIZE EFFECT IN CONCRETE VIA A BI‐SCALE DAMAGE APPROACH

C. SAOURIDIS, J. MAZARS

Simple but also accurate models are needed to predict the failure response of concrete structures. Simplicity involves modelling assumptions while accuracy involves objectivity of…

A FINITE ELEMENT TECHNIQUE FOR THE ULTIMATE STRENGTH ANALYSIS OF TUBULAR JOINTS

WILLIAM F. COFER, KENNETH M. WILL

Offshore structures are generally constructed as frameworks of tubular members. The tubular joints should be designed to allow the full post yield or post buckled capacity of the…

A GENERALIZED CLOSEST‐POINT‐PROJECTION METHOD FOR DEFORMATION‐NEUTRALIZED FORMULATION IN FINITE STRAIN PLASTICITY

M.J. SARAN, K. RUNESSON

An implicit type algorithm for the integration of hypoelastic constitutive equations is proposed for large strain and large rotation conditions. Constitutive relations are derived…

A DECOUPLED FINITE ELEMENT METHOD TO COMPUTE STATIONARY UPPER‐CONVECTED MAXWELL FLUID FLOW IN 2‐D CONVERGENT GEOMETRY

H. MADERS, Y. DEMAY, J.F. AGASSANT

In this study, the stationary flow of a polymeric fluid governed by the upper convected Maxwell law is computed in a 2‐D convergent geometry. A finite element method is used to…

EFFICIENT SOLUTION PROCEDURES FOR SYSTEMS WITH LOCAL NON‐LINEARITIES

ADNAN IBRAHIMBEGOVI&Cacute, EDWARD L. WILSON

This paper presents several methods for enhancing computational efficiency in both static and dynamic analysis of structural systems with localized non‐linear behaviour. A…