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Wang, Qinyu (author), Senatore, Gennaro (author), Jansen, K.M.B. (author), Habraken, Arjan (author), Teuffel, Patrick (author)This paper presents experimental testing of a new semi-active vibration control device comprising a shape memory polymer (SMP) core that is reinforced by an SMP-aramid composite skin. This control device works as a load-transfer component that can be integrated into truss and frame structures in the form of a joint. At the material level,...journal article 2021
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Van Den Oord, Gijs (author), Chertova, Maria (author), Jansson, F.R. (author), Pelupessy, Inti (author), Siebesma, A.P. (author), Crommelin, Daan (author)In order to eliminate climate uncertainty w.r.t. cloud and convection parametrizations, superpramaterization (SP) [1] has emerged as one of the possible ways forward. We have implemented (regional) superparametrization of the ECMWF weather model OpenIFS [2] by cloud-resolving, three-dimensional large-eddy simulations. This setup, described in...conference paper 2021
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Rocha, I.B.C.M. (author), Kerfriden, P. (author), van der Meer, F.P. (author)Concurrent multiscale finite element analysis (FE<sup>2</sup>) is a powerful approach for high-fidelity modeling of materials for which a suitable macroscopic constitutive model is not available. However, the extreme computational effort associated with computing a nested micromodel at every macroscopic integration point makes FE<sup>2</sup>...journal article 2021
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Stoter, Stein K.F. (author), ten Eikelder, M.F.P. (author), de Prenter, Frits (author), Akkerman, I. (author), van Brummelen, E. Harald (author), Verhoosel, Clemens V. (author), Schillinger, Dominik (author)We show that in the variational multiscale framework, the weak enforcement of essential boundary conditions via Nitsche's method corresponds directly to a particular choice of projection operator. The consistency, symmetry and penalty terms of Nitsche's method all originate from the fine-scale closure dictated by the corresponding scale...journal article 2021
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Groen, D. (author), Arabnejad, H. (author), Jancauskas, V. (author), Edeling, W. N. (author), Jansson, F.R. (author), Richardson, R. A. (author), Lakhlili, J. (author), Veen, L. (author), Bosak, B. (author)We present the VECMA toolkit (VECMAtk), a flexible software environment for single and multiscale simulations that introduces directly applicable and reusable procedures for verification, validation (V&V), sensitivity analysis (SA) and uncertainty quantication (UQ). It enables users to verify key aspects of their applications,...journal article 2021
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Turteltaub, S.R. (author), Suárez-Millán, Rubén (author)Two distinct length scale transition methodologies are developed to establish effective traction-separation relations for fracture in composite materials within a hierarchical multiscale framework. The two methodologies, one kinetics-based and the other kinematics-based, specify effective fracture properties that satisfy a surface-based Hill...journal article 2020
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Peng, Bo (author)The Pearl River Delta region includes nine cities in Guangzhou, Foshan, Zhaoqing, Shenzhen, Dongguan, Huizhou, Zhuhai, Zhongshan and Jiangmen in Guangdong Province, with a total area of 56,000 square kilometers. It is one of the three largest urban agglomerations in China with the most developed industry and the densest population. Among them,...master thesis 2020
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Pusuluri, Abhinand (author)An effective way to solve the forced Burgers' equation in a variational multiscale framework is to close the system of equations using unresolved-scale interaction terms predicted by an artificial neural network. The goal of this thesis is to investigate the accuracy and stability of the said system by training a neural network offline with data...master thesis 2020
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ten Eikelder, M.F.P. (author), Bazilevs, Y. (author), Akkerman, I. (author)In this paper we show that the variational multiscale method together with the variation entropy concept form the underlying theoretical framework of discontinuity capturing. The variation entropy [M.F.P. ten Eikelder and I. Akkerman, Comput. Methods Appl. Mech. Engrg. 355 (2019) 261-283] is the recently introduced concept that equips total...journal article 2020
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Hosseinimehr, S.M. (author), Vuik, Cornelis (author), Hajibeygi, H. (author)An algebraic dynamic multilevel (ADM) method for fully-coupled simulation of flow and heat transport in heterogeneous fractured geothermal reservoirs is presented. Fractures are modeled explicitly using the projection-based embedded discrete method (pEDFM), which accurately represents fractures with generic conductivity values, from barriers to...journal article 2020
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Lifshitz Sherzer, G. (author), Schlangen, E. (author), Ye, G. (author), Gal, A. E. (author)We propose an upscaled methodology for evaluating the compressive parameters of the Lattice Discrete Particle Model (LDPM) for a multiscale analysis of concrete structures. This methodology is based on mechanical and chemical models on a wide range of concrete scales. We show that the compressive mechanical parameters are related mainly to...journal article 2020
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Jesus de Moraes, R. (author), Hajibeygi, H. (author), Jansen, J.D. (author)In data assimilation problems, various types of data are naturally linked to different spatial resolutions (e.g., seismic and electromagnetic data), and these scales are usually not coincident to the subsurface simulation model scale. Alternatives like upscaling/downscaling of the data and/or the simulation model can be used, but with...journal article 2020
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Hajibeygi, H. (author), Olivares, Manuela Bastidas (author), Hosseinimehr, S.M. (author), Pop, Sorin (author), Wheeler, Mary (author)Accurate simulation of multiphase flow in subsurface formations is challenging, as the formations span large length scales (km) with high-resolution heterogeneous properties. To deal with this challenge, different multiscale methods have been developed. Such methods construct coarse-scale systems, based on a given high-resolution fine-scale...journal article 2020
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Xin, H. (author), Mosallam, Ayman (author), Correia, José A.F.O. (author), Liu, Yuqing (author), He, Jun (author), Sun, Yun (author)Design optimization of fiber-reinforced polymeric (FRP) composite products is essential to facilitate their applications in engineering structures. For bridge structures, the main design optimization goals are the reduction of FRP material consumption and the structure weight, which aim to reduce the initial construction cost and achieve a...journal article 2020
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Vertical Motion Simulation Of A DTMB 5415M Ship In Head Sea Using The Variational Multi-scale MethodShen, Zhongwei (author)This master thesis presents the computation of free-surface flow phenomena with emphasis on ship hydromechanics. We perform a simulation of the heave and the pitch motion of the DTMB 5415M ship moving in head sea. To this purpose we employ an existing Arbitrary-Lagrangian-Eulerian residual-based variational multiscale method (ALE-RBVMS) to...master thesis 2019
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Sun, Chuanzhi (author), Nijhuis, S. (author), Bracken, G. (author)The Pearl River Delta (PRD) is a river dominated floodplain in southeast China. Decreasing space for water, through dike-ring construction, channelization, and urbanization, has led to increased flood risk from river, rain, and sea. To protect from flood risk, a more adaptive urbanization strategy is required; one takes into account a multiscale...journal article 2019
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Janssens, Martin (author)Today's leading projections of climate change predicate on Atmospheric General Circulation Models (GCMs). Since the atmosphere consists of a staggering range of scales that impact global trends, but computational constraints prevent many of these scales from being directly represented in numerical simulations, GCMs require "parameterisations'' -...master thesis 2019
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Cejudo Grano de Oro, Jose Eduardo (author)This work is concerned with the simulation of gas networks using a hybrid modeling approach where different pipes are described withmodels belonging to the isothermal model hierarchy. It makes special emphasis in the coupling of algebraic and transient models and their effects in both steady-state and transient regime. The transient behavior of...master thesis 2019
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Sun, Chuanzhi (author)The Pearl River Delta (PRD) is a river dominated floodplain in southeast China. Long known as one of the country’s richest agricultural regions, in recent years it has also become known as one of the world’s most densely urbanized areas. Decreasing space for water through dyke-ring construction, channelization and urbanization has led to...master thesis 2019
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Turteltaub, S.R. (author), de Jong, Gijs (author)A multiscale fracture model is developed to study the influence of defects appearing at a microscale in a fiber-reinforced composite laminate. The model establishes a link between the geometrical characteristics of sub-ply imperfections that may be created during manufacturing and the overall fracture strength and fracture energy of the...journal article 2019