Auflistung Nach Schlagwort "Finite element method"
Anzeige der Dokumente 61-80 von 132
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Heating and cooling induced stresses and displacements in heat exchanger piles in sand
(2020)Heating and cooling of heat exchanger piles causes changes in the axial stresses in the pile and vertical pile displacements. Changes in axial stress (thermal stresses) are more significant in the case of fixed head piles, ... -
Hierarchical Bayesian uncertainty quantification of Finite Element models using modal statistical information
(2022)This paper develops a Hierarchical Bayesian Modeling (HBM) framework for uncertainty quantification of Finite Element (FE) models based on modal information. This framework uses an existing Fast Fourier Transform (FFT) ... -
High-strength steel tubular welded joints under extreme loading conditions
(2016)The present work examines the behavior of high-strength steel welded tubular connections subjected to extreme loading conditions, focusing on their monotonic and low-cycle fatigue performance. The work consists of two ... -
Implementation of an adaptive meta-model for Bayesian finite element model updating in time domain
(2017)This work explores the feasibility of integrating an adaptive meta-model into a finite element model updating formulation using dynamic response data. A Bayesian model updating approach based on a stochastic simulation ... -
Implications of subsoil-foundation modelling on the dynamic characteristics of a monitored bridge
(2019)Model updating based on system identification (SI) results is a well-established procedure to evaluate the reliability of a developed numerical model. In this inverse assessment problem, soil-foundation compliance is often ... -
Improving the Performance of Steel Pipe Welded Lap Joints in Geohazard Areas
(2016)Finite element simulation of the structural performance of stiffened lap welded pipeline joints was performed, subjected to severe axial and bending loading conditions, resulting from ground-induced actions, in the presence ... -
Instrumented indentation of a non-equal biaxial prestretched hyperelastic substrate
(2016)The present work investigates the instrumented indentation of a prestretched hyperelastic substrate. The substrate is incompressible and has an elastic energy density which is isotropic in the reference frame. The analysis ... -
Lateral loading of internally pressurized steel pipes
(2005)The paper examines the denting response of tubular members and pipes subjected to lateral (transverse) quasi-static loading, in the presence of internal pressure. Tubes are modeled with nonlinear shell finite elements, and ... -
Low-cycle fatigue of base-plate-to-shell connection in uplifting liquid storage tanks under seismic loading
(2019)Unanchored steel tanks, subjected to strong seismic loading, may exhibit base plate uplifting. Under repeated uplifting, the welded connection of the tank base plate with the tank shell (a fillet-welded connection) is ... -
Mechanical Response of Steel Pipe Welded Lap Joints in Seismic Areas
(2017)Nonlinear finite element simulation tools are employed to investigate the bending capacity of internally-pressurized double-welded lap pipeline joints for a typical steel, with D | t value equal to 191.5. The study constitutes ... -
Mixed finite-element formulations in piezoelectricity and flexoelectricity
(2016)Flexoelectricity, the linear coupling of strain gradient and electric polarization, is inherently a size-dependent phenomenon. The energy storage function for a flexoelectric material depends not only on polarization and ... -
Model-reduction techniques for reliability-based design problems of complex structural systems
(2016)This work presents a strategy for dealing with reliability-based design problems of a class of linear and nonlinear finite element models under stochastic excitation. In general, the solution of this class of problems is ... -
Modelling of spiral-welded pipe manufacturing and its effect on pipeline structural performance
(2016)The increasing use of large-diameter spiral-welded pipes in demanding hydrocarbon pipeline applications constitutes an engineering challenge, which requires the definition of an appropriate strain-design framework. In the ... -
Modelling the singular rail and wheel surface defect for predicting railway ground vibration
(2015)When undertaking a railway vibration assessment, the presence of singular defects on the rail and wheel surfaces significantly affects the ground vibration level. The objective of this paper is to analyse the most common ... -
Multi-objective optimization algorithms for finite element model updating
(2008)A multi-objective optimization method is presented for estimating the parameters of finite element structural models based on modal residuals. The method results in multiple Pareto optimal structural models that are ... -
Multi-objective parameter identification in structural dynamics
(2003)The structural identification problem is formulated in a multi-objective context that allows the simultaneous minimization of the various objectives related to the fit between measured and model predicted data. Thus, the ... -
Non-associative J2 plasticity model for finite element buckling analysis of shells in the inelastic range
(2016)The development and numerical implementation of a special-purpose constitutive model is described for investigating the structural stability of cylindrical metal shells under axial compression and bending, which buckle in ... -
Nonlinear gear transmission system numerical dynamic analysis and experimental validation
(2014)The main objective of the present work was to accurately predict the dynamic response of a gear transmission system. First, a nonlinear mathematical model is introduced. In this model, the housing of the gearbox is modeled ... -
A Nonlinear Model Inversion Method for Joint System Parameter, Noise, and Input Identification of Civil Structures
(2017)This paper presents a framework for nonlinear system identification of civil structures using sparsely measured dynamic output response of the structure. Using a sequential maximum likelihood estimation (MLE) approach, the ... -
A Novel steel pipe joint for enhancing pipeline seismic resilience i: Development and validation
(2022)During the last four years, an extensive experimental project has been launched to determine the structural performance of lap welded joints under ground-induced deformations, mainly due to severe seismic events. The ...