Browsing by Subject "Engineering, Multidisciplinary"
Now showing items 1-20 of 41
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Advanced Modeling of Composite Slabs with Thin-Walled Steel Sheeting Submitted to Fire
(2013)The paper studies the behavior of composite slabs with corrugated steel sheeting at elevated temperatures. Two structural systems are considered: a simply supported composite slab and a continuous composite slab that ... -
Bayesian uncertainty quantification and propagation for discrete element simulations of granular materials
(2014)Predictions in the behavior of granular materials using Discrete Element Methods (DEM) hinge on the employed interaction potentials. Here we introduce a data driven, Bayesian framework to quantify DEM predictions. Our ... -
Bifurcations and catastrophes of a two-degrees-of-freedom nonlinear model simulating the buckling and postbuckling of rectangular plates
(2007)The nonlinear buckling and postbuckling behavior of rectangular plates in symmetric and antisymmetric modes is re-examined, in the context of Bifurcation and Catastrophe Theories, using a two-degrees-of-freedom model, which ... -
Complex Dynamics in Non-linear Real Estate Models
(2013)In the present paper we study the complex dynamics of non-linear cobweb models of real estate markets in discrete time. Our model incorporates two sub-markets, land and housing, interacting with each other. We start by ... -
The disturbance of heat flow and thermal stresses in composites with partially bonded inclusions
(2000)A general solution to the thermoelastic and heat conduction problems for composite materials with curvilinear partially bonded inclusions is obtained. The solution of these problems is based on the complex potential method, ... -
The effect of infinitesimal damping on the dynamic instability mechanism of conservative systems
(2008)The local instability of 2 degrees of freedom (DOF) weakly damped systems is thoroughly discussed using the Lienard-Chipart stability criterion. The individual and coupling effect of mass and stiffness distribution on the ... -
An experimental study of interface relaxation methods for composite elliptic differential equations
(2008)The recently proposed simulation framework of interface relaxation for developing multi-domain multi-physics simulation engines is considered. An experimental study of the behavior of two representative interface relaxation ... -
Finite Element Analysis of Discrete Circular Dislocations
(2010)The present work gives a systematic and rigorous implementation of (edge type) circular Volterra dislocation loops in ordinary axisymmetric finite elements using the thermal analogue and the integral representation of ... -
Finite element implementation of gradient plasticity models - Part I: Gradient-dependent yield functions
(1998)Theories with intrinsic or material length scales find applications in the modeling of size-dependent phenomena such as, for example, the localization of plastic flow into shear bands. In gradient-type plasticity theories, ... -
Finite element implementation of gradient plasticity models - Part II: Gradient-dependent evolution equations
(1998)The variational formulation and finite element implementation of a class of plasticity models with gradient-dependent yield functions is covered in detail in Part I. In this sequel, attention is focussed upon the finite ... -
A Fourier-based implicit evolution scheme for active surfaces, for object segmentation in volumetric images
(2013)Active contours (AC) and active surfaces (AS) have been used extensively for segmentation and measurement in two- and three-dimensional images. The small time steps used in discretizing the evolution equation of AC/AS with ... -
Fuzzy sets in seismic inelastic analysis and design of reinforced concrete frames
(2003)In this paper, a new approach to the problem of estimating the structural response of systems with uncertain characteristics is presented. The approach is based on the theory of fuzzy sets, which allow the designers to ... -
Initial results on SiPMs performance for use in medical imaging
(2011)Silicon photomultiplier (SiPMs) detectors are attractive candidates for replacing position sensitive photomultipliers in nuclear imaging. They are compact, they provide high gain with low bias voltage and show better ... -
Input-output decoupling for linear systems with nonlinear uncertain structure
(1996)in this paper the problem of input-output decoupling for linear systems with nonlinear uncertain structure, via an independent of the uncertainties static state feedback law, is studied and solved for the first time. The ... -
Interpolation based numerical procedure for solving two-point nonlinear boundary value problems
(2004)The present paper offers a simple, efficient and accurate straightforward numerical method for solving two-point nonlinear boundary value problems (NBVPs), which are frequently encountered in a broad discipline of sciences. ... -
Laminar film flow along a periodic wall
(2000)Laminar, gravity-driven flow of a liquid down an inclined wall with large-amplitude sinusoidal corrugations is studied numerically by a spectral spatial discretization method. The synchronous resonance between the wall and ... -
Meeting transfer function requirements via static measurement output feedback
(1998)The important transfer function design problems of input-output decoupling, exact model matching and disturbance rejection, via static measurement output feedback, are studied for the case of generalized state space systems. ... -
Mixed finite element formulations of strain-gradient elasticity problems
(2002)Theories on intrinsic or material length scales find applications in the modeling of size-dependent phenomena. In elasticity, length scales enter the constitutive equations through the elastic strain energy function, which, ... -
Model-reduction techniques for Bayesian finite element model updating using dynamic response data
(2014)This work presents a strategy for integrating a class of model reduction techniques into a finite element model updating formulation. In particular a Bayesian model updating approach based on a stochastic simulation method ...