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Jing, R. (author), van Lent, Diederik (author), Kasbergen, C. (author), Scarpas, A. (author), Liu, X. (author), Erkens, S.M.J.G. (author)
When oxygen diffuses in a bituminous film, it also reacts, simultaneously, with the constituents of the bitumen and as such it is gradually depleted. This depletion process masks the characteristics of the actual diffusion process and complicates the determination of the diffusion coefficient needed for computation of oxygen concentration and...
conference paper 2017
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Brinkgreve, R.B.J. (author), Post, M. (author)
Displacement-based finite element calculations are primarily used for serviceability limit state (SLS) analysis, but the finite element method also offers possibilities for ultimate limit state (ULS) design in geotechnical engineering. The combined use of SLS and ULS calculations with partial safety factors according to the different design...
conference paper 2015
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Brinkgreve, R.B.J. (author), Post, M. (author)
Displacement-based finite element calculations are primarily used for serviceability limit state (SLS) analysis, but the finite element method also offers possibilities for ultimate limit state (ULS) design in geotechnical engineering. The combined use of SLS and ULS calculations with partial safety factors according to the different design...
conference paper 2015
document
Akbas, S.O. (author), Kokten, O. (author)
A deep excavation application characterized by imprecise data and lack of adequate information is used to demonstrate the efficiency, applicability, and validity of the random set theory in combination with finite element method (RS-FEM). A case history of an anchored contiguous pile wall in overconsolidated fissured Ankara Clay constructed for...
conference paper 2015
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Akbas, B. (author), Huvaj, N. (author)
This paper compares the results of different probabilistic approaches and emphasizes the necessity of probabilistic analyses in slope stability studies. To do that, Limit Equilibrium Method (LEM) and Finite Element Method (FEM) are utilized and their outputs are compared in terms of probability of failure (PF), reliability index (RI), factor of...
conference paper 2015
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Su, H.Z. (author), Wen, Z. (author), Yang, M. (author)
The elastic-plastic mechanical behaviour is a typical characteristic of rock mass. The load action will bring on the local destruction, large deformation, even whole failure of rock mass with the discontinuous mediums (e.g. joint, crack and fault). It is a coupling process of the continuous deformation and the discontinuous deformation. The...
conference paper 2015
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Naeimi, M. (author), Li, Z. (author), Dollevoet, R.P.B.J. (author), Wu, J. (author), Petrov, R.H. (author), Sietsma, J. (author)
The coupled mechanical–thermal behaviour of wheel and rail materials under rolling contact is studied to determine the temperature rise due to the frictional heat. The wheel–rail frictional rolling contact problem is solved using the three–dimensional finite element (FE) method. The FE model considers the wheel tread–rail top contact with...
conference paper 2015
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Tapeinos, I. (author), Koussios, S. (author), Groves, R.M. (author)
This paper outlines the structural performance of a conformable pressurizable tank consisting of intersecting spherical shells (multi-cell tank). Multi-cell tanks outrival conventional multiple cylindrical tanks in volumetric efficiency when required to fit in a rectangular envelope in the automotive industry. When pressurized, the multi-cell ...
conference paper 2015
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Deng, X. (author), Naeimi, M. (author), Li, Z. (author), Qian, Z. (author)
A modeling procedure to predict the residual fatigue life of rail at squats seeds is developed in this article. Two models are involved: a 3D explicit Finite Element (FE) model to compute the stress and strain at squats in rail, and the J-S fatigue damage model to determine the residual fatigue life on the basis of the computed stress and strain...
conference paper 2014
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Coenders, J.L. (author)
This paper presents two novel open source software developments for design and engineering in the built environment. The first development, called “sustainability-open” [1], aims on providing open source design, analysis and assessment software source code for (environmental) performance of buildings, structures and infrastructure. The aim of...
conference paper 2013
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Kurilla, L. (author), Achten, H. (author), Florian, M. (author)
In order to support an architect’s decision to evaluate and choose more efficient structural solutions in the concept design, it is necessary to establish an interactive feedback loop between structural solver and geometry modeller which would allow one to analyse a great number of solutions generated in the scripting design process. Defining a...
conference paper 2013
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Hilloulin, B. (author), Grondin, F. (author), Matallah, M. (author), Loukili, A. (author)
Cracks, caused by shrinkage or external loading, reduce the durability of concrete structures as aggressive substances can easily enter in the capillary network of the cementitious matrix. Natural ‘autogenous’ healing ability of concrete by further hydration or precipitation has been studied experimentally for many years. Autogenous healing of...
conference paper 2013
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Caggiano, A. (author), Pepe, M. (author), Koenders, E.A.B. (author), Martinelli, E. (author), Etse, G.J. (author)
Heat production induced by the hydration reaction and the resulting temperature evolution in the early phases of setting and hardening processes are critical phenomena, often leading to premature cracking of concrete members. However, the interest for simulating such phenomena is also related to the fundamental relationships between the nature...
conference paper 2012
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Sandhaas, C. (author), Van de Kuilen, J.W. (author), Blass, H.J. (author)
conference paper 2012
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Malidi, A. (author), Harlen, O. (author)
We present a novel Lagrangian finite element method for simulating suspensions of particles in viscoelastic fluids. We solve the flow in a unit cell containing a small number of particles with doubly periodic boundary conditions on a self-replicating two-dimensional lattice to replicate a suspension on an infinite domain. The method uses a...
conference paper 2006
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Svacek, P. (author), Horacek, J. (author)
The paper focus on numerical approximation of the coupled of fluid and structural models in aeroelastic simulations as well as to the coupling of both models. The fluid motion is described by the incompressible Reynolds Averaged Navier-Stokes equations (RANS) and coupled with Spallart-Almaras turbulence model. The numerical solution by finite...
conference paper 2006
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Ito, S. (author), Okuda, H. (author)
Computational fluid analysis requires huge amounts of computational resources. However, for the usual developer, parallelization is difficult as it requires special programming skills. In this study, the “HPC Middleware” is employed, which supports parallelization and optimizations for easily developing parallel code. The parallel efficiency of...
conference paper 2006
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Rudnyi, E.B. (author), Korvink, J.G. (author)
Software MOR for ANSYS has been developed at IMTEK in 2003. It allows us to perform model reduction directly to finite element models developed in ANSYS. The goal of the present paper is to describe progress achieved for the last two years and review our publications with application of MOR for ANSYS to various engineering problems for different...
conference paper 2006
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Stiemer, M. (author), Unger, J. (author), Svendsen, B. (author), Blum, H. (author)
Electromagnetic metal forming is a contact-free high-speed forming process. The deformation of the workpiece is driven by a material body force, the Lorentz force, that results from the interaction of a pulsed magnetic field with eddy currents induced in the workpiece by the magnetic field itself. The purpose of this work is to present a fully...
conference paper 2006
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John, V. (author), Tambulea, A. (author)
Two realizations of finite element variational multiscale (VMS) methods for the simulation of incompressible turbulent flows are studied. The difference between the two approaches consists in the way the spaces for the large scales and the resolved small scales are chosen. The paper addresses issues of the implementation of these methods, the...
conference paper 2006
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