Sfoglia per Soggetto "Numerical methods"
Items 1-20 di 52
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Accuracy versus simplicity of anisotropic clay models
(2014)This paper explores the simulative capabilities of a family of simple anisotropic clay models collectively named SANICLAY models. For this purpose, the paper highlights how specific constitutive ingredients provide accuracy ... -
Adaptive Kalman filters for nonlinear finite element model updating
(2020)This paper presents two adaptive Kalman filters (KFs) for nonlinear model updating where, in addition to nonlinear model parameters, the covariance matrix of measurement noise is estimated recursively in a near online ... -
Advances on the continued fractions method using better estimations of positive root bounds
(2007)We present an implementation of the Continued Fractions (CF) real root isolation method using a recently developed upper bound on the positive values of the roots of polynomials. Empirical results presented in this paper ... -
Anisotropic sand model and fabric evolution until the critical state
(2014)This paper presents a simple anisotropic sand model within a recently proposed anisotropic critical state theory (ACST). The model adopts the SANISAND constitutive model platform and uses a fundamental ingredient of ACST, ... -
Band Preconditioners for Non-Symmetric Real Toeplitz Systems with Unknown Generating Function
(2021)Toeplitz systems appear in a variety of applications in real life such as signal processing, image processing and restoration and discretization of PDEs. The fast convergence to the accurate solution of the system seems ... -
Block error rate performance of OOK freespace optical links over gamma-gamma turbulence channels with generalised nonzero boresight pointing errors
(2018)The authors consider a point-to-point optical wireless communication link with on-off keying (OOK) modulation scheme. The propagation is deteriorated by the joint effects of gamma-gamma atmospheric turbulence and misalignment ... -
Buckling and classification of high-strength steel CHS tubular members under axial compression and bending
(2012)EN 1993-1-1 provisions classify high-strength steel CHS members with relatively low values of D/t ratio as Class 3 or 4, so that their strength is based on elastic behavior only, neglecting their capability of sustaining ... -
Calibration and signal interpretation for single and multiple hot-wire/hot-film probes
(1996)The use of single and multiple hot-wire/hot-film probes for subsonic flows is discussed with emphasis on the digital methods and procedures. An account is given of the major factors which influence the reliability of ... -
A combined numerical/experimental prediction method for urban railway vibration
(2017)Railway-induced ground vibrations can cause negative effects to people/structures located in urban areas. One of the main sources of these vibrations is from the large vehicle forces generated when train wheels impact local ... -
Comparison of three classes of algorithms for the solution of the linear complementarity problem with an H+-matrix
(2018)There are three main classes of iterative methods for the solution of the linear complementarity problem (LCP). In order of appearance these classes are: the “projected iterative methods”, the “(block) modulus algorithms” ... -
A computational framework of kinematic accuracy reliability analysis for industrial robots
(2020)A new computational method to evaluate comprehensively the positional accuracy reliability for single coordinate, single point, multipoint and trajectory accuracy of industrial robots is proposed using the sparse grid ... -
Coupled numerical simulation of low-cycle fatigue damage in metal components
(2021)A coupled cyclic plasticity-damage model is implemented for simulating low-cycle fatigue in metal components. Constitutive relations account for J2-flow theory with nonlinear kinematic/isotropic hardening, coupled with ... -
Data-driven uncertainty quantification and propagation in structural dynamics through a hierarchical Bayesian framework
(2020)In the presence of modeling errors, the mainstream Bayesian methods seldom give a realistic account of uncertainties as they commonly underestimate the inherent variability of parameters. This problem is not due to any ... -
Dynamic simulation of a coated microbubble in an unbounded flow: Response to a step change in pressure
(2017)A numerical method is developed to study the dynamic behaviour of an encapsulated bubble when the viscous forces of the surrounding liquid are accounted for. The continuity and Navier-Stokes equations are solved for the ... -
Effect of macroscale formation of intraluminal thrombus on blood flow in abdominal aortic aneurysms
(2014)A mathematical approach of blood flow within an abdominal aortic aneurysm (AAA) with intraluminal thrombus (ILT) is presented. The macroscale formation of ILT is modeled as a growing porous medium with variable porosity ... -
Effect of macroscale formation of intraluminal thrombus on blood flow in abdominal aortic aneurysms
(2016)A mathematical approach of blood flow within an abdominal aortic aneurysm (AAA) with intraluminal thrombus (ILT) is presented. The macroscale formation of ILT is modeled as a growing porous medium with variable porosity ... -
The effect of vent configuration and insect screens on greenhouse microclimate
(2005)The influence of insect screens and vent configurations on airflow and temperature patterns in an arched plastic covered greenhouse used for cultivating tomatoes was analysed using a commercial computational fluid dynamics ... -
Effect of yield surface shape on the simulated elasto-plastic response of cohesive soils
(2010)This paper presents a discussion on the effect of the selected yield surface shape on the simulated drained and undrained response of cohesive soils. The discussion is made possible by sequentially implementing two different ... -
Efficient solution of large sparse linear systems in modern hardware
(2016)The solution of large-scale sparse linear systems arises in numerous scientific and engineering problems. Typical examples involve study of many real world multi-physics problems and the analysis of electric power systems. ... -
Evaluation of seismic slope displacement techniques in term of engineering criteria and financial restrictions
(2021)Whether a slope is naturally occurring or constructed, its stability is a critical situation. During the designing part of a construction, engineers can use a variety of tools in order to dimension slope stability and ...