Outputs (2633)

On the use of an enhanced transverse shear strain shell element for problems involving large rotations (2003)
Journal Article

This paper presents the extension of a previously developed formulation for shell elements in order to account for non-linear geometric effects, particularly in the presence of large rotations. To eliminate transverse shear locking, the developed she... Read More about On the use of an enhanced transverse shear strain shell element for problems involving large rotations.

The flow of a DAE near a singular equilibrium (2003)
Journal Article

We extend the differential-algebraic equation (DAE) taxonomy by assuming that the linearization of a DAE about a singular equilibrium has a particular index-2 Kronecker normal form. A Lyapunov-Schmidt procedure is used to reduce the DAE to a quasilin... Read More about The flow of a DAE near a singular equilibrium.

Transversality and separation of zeros in second order differential equations (2003)
Journal Article

Sufficient conditions on the non-linearity f are given which ensure that non-trivial solutions of second order differential equations of the form Lu = f(t, u) have a finite number of transverse zeros in a given finite time interval. We also obtain a... Read More about Transversality and separation of zeros in second order differential equations.

Simulation and modelling of turbulent trailing-edge flow (2002)
Journal Article

Computations of turbulent trailing-edge flow have been carried out at a Reynolds number of 1000 (based on the free-stream quantities and the trailing-edge thickness) using an unsteady 3D Reynolds-Averaged Navier-Stokes (URANS) code, in which two-equa... Read More about Simulation and modelling of turbulent trailing-edge flow.

Direct Lyapunov design - A synthesis procedure for motor schema using a second-order Lyapunov stability theorem (2002)
Presentation / Conference Contribution

In this paper we propose a new procedure for construction of motor schema typically used in behaviour-based robotics. The procedure reverses the standard stability analysis approach by searching for a
control function to fit a pre-defined Lyapunov f... Read More about Direct Lyapunov design - A synthesis procedure for motor schema using a second-order Lyapunov stability theorem.

Development of a one point quadrature shell element for nonlinear applications with contact and anisotropy (2002)
Journal Article

A general purpose shell element for nonlinear applications including sheet metal forming simulation is developed based on reduced integration with one point quadrature. The developed shell element has five degrees of freedom and four nodes. It covers... Read More about Development of a one point quadrature shell element for nonlinear applications with contact and anisotropy.

One point quadrature shell element for nonlinear applications (2002)
Presentation / Conference Contribution

Concentrations of Cd, Zn and Cu in sediments and brown shrimp (Crangon crangon L.) from the Severn Estuary and Bristol Channel, UK (2002)
Presentation / Conference Contribution

Cd, Zn and Cu levels were determined in sediments and Crangon crangon from 9 sites in the Severn Estuary/Bristol Channel during winter 1999. Metal levels in both shrimp and sediments varied significantly between sites and were related to proximity of... Read More about Concentrations of Cd, Zn and Cu in sediments and brown shrimp (Crangon crangon L.) from the Severn Estuary and Bristol Channel, UK.

Projecto e optimizacao de processos de conformacao plastica de chapa recorrendo ao metodo dos elementos finitos (2002)
Presentation / Conference Contribution

Neural networks for improved text-independent speaker identification (2002)
Journal Article

In this article, we consider the binary partitioned approach with pattern index information, propose an neural network array (NNA) that performs the pattern recognition task by combining the binary partitioned approach with decision trees, and verify... Read More about Neural networks for improved text-independent speaker identification.