Engineering Computations: Volume 15 Issue 7

Error calculation in the constitutive relation for Mindlin plate finite element analyses

Stéphane Perrin, Philippe Boisse

An extension of the concept of error on constitutive relation is proposed to the case of Mindlin plate finite element computations. The error of the performed analysis is…

The inverse approach with simple triangular shell elements for large strain predictions of sheet metal forming parts

Jean‐Louis Batoz, Ying Qiao Guo, Frederic Mercier

An efficient algorithm to estimate the large elasto‐plastic strains encountered in thin sheet metal forming parts has been continuously developed by the authors since 1987. The…

A computer system for solving inverse and optimization problems

T. Rodič, I. Grešovnik

A system for solving a wide variety of inverse and optimization problems in solid mechanics is introduced. The system consists of a general purpose finite element method (FEM…

Implicit scheme for contact analysis in non‐steady state forming

P. Mahajan, L. Fourment, J.L. Chenot

The finite element analysis of deformation of viscoplastic material involves contact between the tool and the workpiece. Here unilateral contact condition with the possibility of…

Parameter estimation for a viscoplastic damage model using a gradient‐based optimization algorithm

Rolf Mahnken, Magnus Johansson, Kenneth Runesson

In this work a gradient‐based optimization method is applied in order to determine material parameters for a viscoplastic model with dynamic yield surface coupled to damage as…

Model of steady rolling contact between layered rolls with thin media in the nip

Kathleen Conlon Hinge, Antoinette M. Maniatty

A finite element model of large deformation, plane strain rolling contact between rubber‐coated rolls with thin media in the nip is developed. The rubber layers on each roll are…

A simple local a posteriori bending indicator for axisymmetric membrane and bending shell elements

Chung‐Souk Han, Peter Wriggers

Several mechanical models can be employed for the analysis of thin walled structures. A bending indicator is developed for a nonlinear adaptive process and applied to thin walled…