Searched for: subject%3A%22Model%255C%2BUncertainty%22
(1 - 20 of 28)

Pages

document
Uchida, Thomas K. (author), Seth, A. (author)
Estimating kinematics from optical motion capture with skin-mounted markers, referred to as an inverse kinematic (IK) calculation, is the most common experimental technique in human motion analysis. Kinematics are often used to diagnose movement disorders and plan treatment strategies. In many such applications, small differences in joint...
journal article 2022
document
Maljaars, Johan (author), Rózsás, Árpád (author), Walters, C.L. (author), Slot, Henk (author)
The failure assessment line (FAL) describes the interaction between plastic failure and fracture of flawed steel components subjected to tension or bending. This paper quantifies the model uncertainty of the FAL as provided in the internationally used British Standard BS 7910:2019 by comparing the assessment with the actual failure load of 82...
journal article 2022
document
de Putter, Arjen (author), Hendriks, M.A.N. (author), Rots, J.G. (author), Yang, Y. (author), Engen, Morten (author), van den Bos, Ab A. (author)
Nineteen 2D nonlinear finite element analysis (NLFEA) solution strategies were benchmarked against a wide variety of 101 experiments on reinforced concrete beams failing in bending, flexural shear, or shear compression. The relatively high number of solution strategies was motivated by the conviction that choices for the constitutive models,...
journal article 2022
document
Slobbe, Arthur (author), Rózsás, Árpád (author), Yang, Y. (author)
This paper presents a reliability-based calibration method for design code formulas. The method is demonstrated on the shear design formulas in Eurocode 2 and fib Model Code 2010 (MC2010). We found that the partial factor (Formula presented.) in the current Eurocode 2 is about 20% lower than the optimal value and, thus, provides an...
journal article 2022
document
Hesselink, Florian (author)
The Dutch heating transition involves changing the heating systems of eight million buildings to a sustainable alternative by 2050. Many heating system technologies are available, but deciding which systems are cheapest for all these buildings is a difficult question to answer. Local policymakers are increasingly making use of heating transition...
master thesis 2021
document
Engen, Morten (author), Hendriks, M.A.N. (author), Monti, Giorgio (author), Allaix, Diego L. (author)
When non-linear finite element analyses are used in design of new or assessment of existing concrete structures, one should account for the modelling uncertainty before conclusions are drawn based on the results. The present article describes the basis for how this topic is treated in the draft of fib Model Code 2020. There are two components...
journal article 2021
document
Lin, Yuhan (author)
Calibration and model prediction is always affected by uncertainty in the forcing data, response data and structural error in the model. The storm-dependent parameters are believed to be able to capture these errors and improve model prediction. The goal of this research will be to further investigate and develop the storm-based approach and...
master thesis 2020
document
de Putter, Arjen (author)
Application of Nonlinear Finite Element Analysis (NLFEA) is lagging behind the many digital advances in the structural engineering practice. This is due to the need for codes and standards. To help development of these codes and standards, 119 solution strategies were developed with different assumptions and choices for the concrete constitutive...
master thesis 2020
document
Kroon, J. (author), de Schipper, M.A. (author), van Gelder, P.H.A.J.M. (author), Aarninkhof, S.G.J. (author)
Sand nourishments are increasingly applied as adaptive coastal protection measures. Predictions of the evolution of these nourishments and their impact on the surrounding coastline contain many uncertainties. The sources that add to this uncertainty can be delineated between intrinsic and epistemic uncertainty, i.e. inevitably in the system or...
journal article 2020
document
Simon, K.M. (author), Riva, R.E.M. (author)
This work provides a comparison of four approaches that can be used to describe uncertainty in models of the long-term glacial isostatic adjustment (GIA) process. The four methods range from pessimistic to optimistic representations of GIA uncertainty. Each estimation method is applied to selected one dimensional GIA model predictions and...
journal article 2020
document
Meinen, Nadieh Elisabeth (author), Maria, Raphaël Daniël Johannes (author), Hofland, B. (author), Jonkman, Sebastiaan N. (author)
Vertical slender hydraulic structures such as sluices, navigation locks, or storm-surge barriers are often dynamically loaded by waves. For a safe and economic design, an accurate description of the wave loads is needed. A widely used formula for this purpose is the Goda–Takahashi wave load formula (GT). It was derived for the assessment of...
journal article 2020
document
Teshome, Tihitina Tilahun (author)
The aim of this thesis project is to investigate the model uncertainty of non-linear finite element analysis of reinforced concrete structures at ultimate limit state by focusing on concrete cracking model, concrete-reinforcement interaction model and mesh size. Following this, eight finite element modelling strategies are developed and 67...
master thesis 2019
document
Huang, Y. (author)
In advanced robotic applications such as robotic locomotion, vehicle and flight simulators, and material test devices, there are higher requirements on stiffness, robustness and power ability for the mechanical structure and the actuator. Hence, it is common for such applications to use parallel manipulators and hydraulic actuators, due to their...
doctoral thesis 2019
document
Kanning, W. (author), Schweckendiek, T. (author)
This paper presents a Bayesian model to determine the model uncertainty of a critical horizontal gradient model for piping for dikes, such a Lane and Bligh. A Bayesian model is needed for two reasons. First, there is a large overlap in cases that failed and survived. Second, the evidence of the failed cases is limited .The model consists of a...
conference paper 2019
document
van der Meer, Anton (author), Schweckendiek, T. (author), Kruse, Henk (author), Schelfhout, Harry (author)
The presence of pipelines in flood defenses presents a challenge for assessing the probability of flooding. To prevent costly structural measures compensating for the possible negative effects of pipeline failure, we developed a framework for an integral failure analysis of pipeline and dike failure. The assessment framework is based on an event...
conference paper 2019
document
Huang, Y. (author), Pool, D.M. (author), Stroosma, O. (author), Chu, Q. P. (author)
High precision motion control of hydraulic manipulators is challenging due to the highly nonlinear dynamics and model uncertainties typical for hydraulic actuators. This paper addresses the implementation of a novel sensor-based incremental nonlinear dynamic inversion control technique for a high-precision hydraulic force controller in existence...
journal article 2019
document
Tan, Reignard (author), Hendriks, M.A.N. (author), Geiker, M. (author), Kanstad, T. (author)
The modified cracked membrane model (MCMM) presented in this paper was formulated to facilitate a mechanical calculation model that predicts crack widths in reinforced concrete (RC) structures subjected to in-plane loading for all cracking stages. It was formulated using the basic concepts of the existing cracked membrane model (CMM)....
journal article 2019
document
Strijker, Bart (author)
<br/>The transition towards a new risk approach for the Dutch national safety assessment of primary flood defences has been taken as an opportunity to improve the dealings with uncertainties. The probabilistic models for the new safety assessment (WBI2017) not only deal with the natural variability, but also with so-called epistemological...
master thesis 2018
document
Tan, Reignard (author), Eileraas, Kristoffer (author), Opkvitne, Ola (author), Žirgulis, Giedrius (author), Hendriks, M.A.N. (author), Geiker, Mette (author), Brekke, Dan Evert (author), Kanstad, Terje (author)
This paper theoretically and experimentally investigates the semi-empirical formulas recommended by Eurocode 2 (EC2), fib Model Code 2010 (MC2010), and Eurocode 2 with the German National Annex (DIN) for calculating crack widths in reinforced concrete. It is shown that the formulas can be derived from the principles for the idealized behavior...
journal article 2018
document
Engen, M (author), Hendriks, M.A.N. (author), Øverli, Jan Arve (author), Åldstedt, Erik (author)
In order to make non-linear finite element analyses applicable during assessments of the ultimate load capacity or the structural reliability of large reinforced concrete structures, there is need for an efficient solution strategy with a low modelling uncertainty. A solution strategy comprises choices regarding force equilibrium, kinematic...
journal article 2017
Searched for: subject%3A%22Model%255C%2BUncertainty%22
(1 - 20 of 28)

Pages