Engineering Computations: Volume 12 Issue 4

External penalized mixed functional algorithms for unilateral contact and friction in a large strain finite element framework

Dominique Lochegnies, Jerome Oudin

New contact boundary modelling is achieved with a basic set of 2 and 3dimension contact primitives. Contact constraints are originally introducedin the variational equations and…

Efficiency of modal analysis to compute the seismic response of dam—foundation systems with non—proportional damping

Lotfi Mehai, Patrick Paultre, Pierre Léger

In a finite element model of typicaldam—foundation—reservoir systems, the presence of heterogeneousmaterial properties for the dam and the foundation produces a combineddamping…

Computational issues arising in multidimensional elliptic inverse problems: the inverse problem of electrocardiography

Lorraine G. Olson, Robert D. Throne

We compare a recently proposed generalized eigensystem approach and anew modified generalized eigensystem approach to more widely used truncatedsingular value decomposition and…

Numerical analysis of near—wall channelling in a packed bed

J.P. Du Plessis, L.I. Roos

Regularities imposed by an external wall on the random distribution ofparticles in a packed bed lead to anisotropic wall effects of the bed. Theresulting deviations of near—wall…

On the loading/unloading conditions of infinitesimal discrete elastoplasticity

Panayiotis Papadopoulos, Robert L. Taylor

This paper addresses the loading/unloading conditions of thediscrete initial—value problem of plastic flow at infinitesimal deformations. As in the continuum problem, it is…

Dynamic stability of a beam on multiple supports subject to pulsating conservative axial loads

H.P. Lee

The equation of motion of a beam on multiple supports, subject toprescribed time‐dependent conservative axial loads, is formulatedbased on Hamilton’s principle and the assumed…