Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Abteilungen OPUS4-3303 Wissenschaftlicher Artikel Ilyani Akmar, A.B.; Lahmer, Tom; Bordas, Stéphane Pierre Alain; Beex, L.A.A.; Rabczuk, Timon Uncertainty quantification of dry woven fabrics: A sensitivity analysis on material properties Uncertainty quantification of dry woven fabrics: A sensitivity analysis on material properties 16 Composite Structures 1 17 10.1016/j.compstruct.2014.04.014 Institut für Strukturmechanik (ISM) OPUS4-3341 Wissenschaftlicher Artikel Ghasemi, Hamid; Rafiee, Roham; Zhuang, Xiaoying; Muthu, Jacob; Rabczuk, Timon Uncertainties propagation in metamodel-based probabilistic optimization of CNT/polymer composite structure using stochastic multi-scale modeling Uncertainties propagation in metamodel-based probabilistic optimization of CNT/polymer composite structure using stochastic multi-scale modeling 10 Computational Materials Science 295 305 Institut für Strukturmechanik (ISM) OPUS4-3320 Wissenschaftlicher Artikel Areias, Pedro; Rabczuk, Timon; Barbosa, J.I. The extended unsymmetric frontal solution for multiple-point constraints The extended unsymmetric frontal solution for multiple-point constraints Engineering Computations Institut für Strukturmechanik (ISM) OPUS4-3311 Wissenschaftlicher Artikel Zhao, Jun-Hua; Kou, Liangzhi; Jiang, Jin-Wu; Rabczuk, Timon Tension-induced phase transition of single-layer molybdenum disulphide (MoS2) at low temperatures Tension-induced phase transition of single-layer molybdenum disulphide (MoS2) at low temperatures Nanotechnology 10.1088/0957-4484/25/29/295701 Institut für Strukturmechanik (ISM) OPUS4-3332 Wissenschaftlicher Artikel Vu-Bac, N.; Lahmer, Tom; Zhang, Yancheng; Zhuang, Xiaoying; Rabczuk, Timon Stochastic predictions of interfacial characteristic of polymeric nanocomposites (PNCs) Stochastic predictions of interfacial characteristic of polymeric nanocomposites (PNCs) 15 Composites Part B Engineering 80 95 Institut für Strukturmechanik (ISM) OPUS4-3343 Wissenschaftlicher Artikel Vu-Bac, N.; Lahmer, Tom; Keitel, Holger; Zhao, Jun-Hua; Zhuang, Xiaoying; Rabczuk, Timon Stochastic predictions of bulk properties of amorphous polyethylene based on molecular dynamics simulations Stochastic predictions of bulk properties of amorphous polyethylene based on molecular dynamics simulations 14 Mechanics of Materials 70 84 Institut für Strukturmechanik (ISM) OPUS4-3304 Wissenschaftlicher Artikel Ghasemi, Hamid; Brighenti, Roberto; Zhuang, Xiaoying; Muthu, Jacob; Rabczuk, Timon Sequential reliability based optimization of fiber content and dispersion in fiber reinforced composite by using NURBS finite elements Sequential reliability based optimization of fiber content and dispersion in fiber reinforced composite by using NURBS finite elements Structural and Multidisciplinary Optimization Institut für Strukturmechanik (ISM) OPUS4-3318 Wissenschaftlicher Artikel Beex, L.A.A.; Kerfriden, Pierre; Rabczuk, Timon; Bordas, Stéphane Pierre Alain Quasicontinuum-based multiscale approaches for plate-like beam lattices experiencing in-plane and out-of-plane deformation Quasicontinuum-based multiscale approaches for plate-like beam lattices experiencing in-plane and out-of-plane deformation Computer Methods in Applied Mechanics and Engineering Institut für Strukturmechanik (ISM) OPUS4-3331 Wissenschaftlicher Artikel Jiang, Jin-Wu; Wang, Bing-Shen; Rabczuk, Timon Phonon modes in single-walled molybdenum disulphide nanotubes: lattice dynamics calculation and molecular dynamics simulation Phonon modes in single-walled molybdenum disulphide nanotubes: lattice dynamics calculation and molecular dynamics simulation Nanotechnology Institut für Strukturmechanik (ISM) OPUS4-3346 Wissenschaftlicher Artikel Amiri, Fatemeh; Millán, D.; Shen, Y.; Rabczuk, Timon; Arroyo, M. Phase-field modeling of fracture in linear thin shells Phase-field modeling of fracture in linear thin shells 7 Theoretical and Applied Fracture Mechanics 102 109 Institut für Strukturmechanik (ISM) OPUS4-3333 Wissenschaftlicher Artikel Jamshidian, M.; Rabczuk, Timon Phase field modelling of stressed grain growth: Analytical study and the effect of microstructural length scale Phase field modelling of stressed grain growth: Analytical study and the effect of microstructural length scale 12 Journal of Computational Physics 23 35 Institut für Strukturmechanik (ISM) OPUS4-3340 Wissenschaftlicher Artikel Ghasemi, Hamid; Brighenti, Roberto; Zhuang, Xiaoying; Muthu, Jacob; Rabczuk, Timon Optimization of fiber distribution in fiber reinforced composite by using NURBS functions Optimization of fiber distribution in fiber reinforced composite by using NURBS functions 10 Computational Materials Science 463 473 Institut für Strukturmechanik (ISM) OPUS4-2335 Dissertation Itam, Zarina Numerical Simulation of Thermo-Chemo-Hygro-Mechanical Alkali-Silica Reaction Model in Concrete at the Mesoscale and Macroscale Alkali-silica reaction causes major problems in concrete structures due to the rapidity of its deformation which leads to the serviceability limit of the structure being reached well before its time. Factors that affect ASR vary greatly, including alkali and silica content, relative humidity, temperature and porosity of the cementitious matrix,all these making it a very complex phenomenon to consider explicitly. With this in mind, the finite element technique was used to build models and generate expansive pressures and damage propagation due to ASR under the influence of thermo-hygrochemoelastic loading. Since ASR initializes in the mesoscopic regions of the concrete, the accumulative effects of its expansion escalates onto the macroscale level with the development of web cracking on the concrete surface, hence solution of the damage model as well as simulation of the ASR phenomenon at both the macroscale and mesoscale levels have been performed. The macroscale model realizes the effects of ASR expansion as a whole and shows how it develops under the influence of moisture, thermal and mechanical loading. Results of the macroscale modeling are smeared throughout the structure and are sufficient to show how damage due to ASR expansion orientates. As opposed to the mesoscale model, the heterogeneity of the model shows us how difference in material properties between aggregates and the cementitious matrix facilitates ASR expansion. With both these models, the ASR phenomenon under influence of thermo-chemo-hygro-mechanical loading can be better understood. 164 urn:nbn:de:gbv:wim2-20141218-23352 10.25643/bauhaus-universitaet.2335 Professur Baustatik und Bauteilfestigkeit OPUS4-3339 Wissenschaftlicher Artikel Jiang, Jin-Wu; Park, Harold S.; Rabczuk, Timon MoS2 nanoresonators: intrinsically better than graphene? MoS2 nanoresonators: intrinsically better than graphene? 7 Nanoscale 3618 3625 Institut für Strukturmechanik (ISM) OPUS4-3330 Wissenschaftlicher Artikel Zhang, Yancheng; Zhuang, Xiaoying; Muthu, Jacob; Mabrouki, Tarek; Fontaine, Michaël; Gong, Yadong; Rabczuk, Timon Load transfer of graphene/carbon nanotube/polyethylene hybrid nanocomposite by molecular dynamics simulation Load transfer of graphene/carbon nanotube/polyethylene hybrid nanocomposite by molecular dynamics simulation 6 Composites Part B Engineering 27 33 Institut für Strukturmechanik (ISM) OPUS4-3313 Wissenschaftlicher Artikel Nguyen, V.P.; Kerfriden, Pierre; Bordas, Stéphane Pierre Alain; Rabczuk, Timon Isogeometric analysis suitable trivariate NURBS representation of composite panels with a new offset algorithm Isogeometric analysis suitable trivariate NURBS representation of composite panels with a new offset algorithm Computer-Aided Design Institut für Strukturmechanik (ISM) OPUS4-3345 Wissenschaftlicher Artikel Thai, Chien H.; Ferreira, A.J.M.; Bordas, Stéphane Pierre Alain; Rabczuk, Timon; Nguyen-Xuan, Hung Isogeometric analysis of laminated composite and sandwich plates using a new inverse trigonometric shear deformation theory Isogeometric analysis of laminated composite and sandwich plates using a new inverse trigonometric shear deformation theory 19 European Journal of Mechanics 89 108 Institut für Strukturmechanik (ISM) OPUS4-3338 Wissenschaftlicher Artikel Luu, M.; Martinez-Rodrigo, M.D.; Zabel, Volkmar; Könke, Carsten H∞ optimization of fluid viscous dampers for reducing vibrations of high-speed railway bridges H∞ optimization of fluid viscous dampers for reducing vibrations of high-speed railway bridges 21 Journal of Sound and Vibration 2421 2442 Institut für Strukturmechanik (ISM) OPUS4-3314 Wissenschaftlicher Artikel Xu, G.; Mourrain, B.; Galligo, A.; Rabczuk, Timon High-quality construction of analysis-suitable trivariate NURBS solids by reparameterization methods High-quality construction of analysis-suitable trivariate NURBS solids by reparameterization methods Computational Mechanics Institut für Strukturmechanik (ISM) OPUS4-3334 Wissenschaftlicher Artikel Nguyen-Thoi, T.; Rabczuk, Timon; Lam-Phat, T.; Ho-Huu, V.; Phung-Van, P. Free vibration analysis of cracked Mindlin plate using an extended cell-based smoothed discrete shear gap method (XCS-DSG3) Free vibration analysis of cracked Mindlin plate using an extended cell-based smoothed discrete shear gap method (XCS-DSG3) Theoretical and Applied Fracture Mechanics Institut für Strukturmechanik (ISM) OPUS4-3317 Wissenschaftlicher Artikel Areias, Pedro; Rabczuk, Timon; Camanho, P.P. Finite strain fracture of 2D problems with injected anisotropic softening elements Finite strain fracture of 2D problems with injected anisotropic softening elements Theoretical and Applied Fracture Mechanics Institut für Strukturmechanik (ISM) OPUS4-3316 Wissenschaftlicher Artikel Jia, Yue; Anitescu, Cosmin; Ghorashi, Seyed Shahram; Rabczuk, Timon; Dias-da-Costa, D. Extended Isogeometric Analysis for Material Interface Problems Extended Isogeometric Analysis for Material Interface Problems Journal of Applied Mathematics Institut für Strukturmechanik (ISM) OPUS4-3342 Wissenschaftlicher Artikel Chen, Lei; Nguyen-Thanh, Nhon; Nguyen-Xuan, Hung; Rabczuk, Timon; Bordas, Stéphane Pierre Alain; Limbert, Georges Explicit finite deformation analysis of isogeometric membranes Explicit finite deformation analysis of isogeometric membranes 26 Computer Methods in Applied Mechanics and Engineering 104 130 Institut für Strukturmechanik (ISM) OPUS4-3336 Wissenschaftlicher Artikel Amani, Jafar; Bagherzadeh, Amir Saboor; Rabczuk, Timon Error estimate and adaptive refinement in Mixed Discrete Least Squares Meshless method Error estimate and adaptive refinement in Mixed Discrete Least Squares Meshless method Mathematical Problems in Engineering Institut für Strukturmechanik (ISM) OPUS4-3335 Wissenschaftlicher Artikel Budarapu, Pattabhi Ramaiah; Gracie, Robert; Yang, Shih-Wei; Zhuang, Xiaoying; Rabczuk, Timon Efficient Coarse Graining in Multiscale Modeling of Fracture Efficient Coarse Graining in Multiscale Modeling of Fracture 17 Theoretical and Applied Fracture Mechanics 126 143 Institut für Strukturmechanik (ISM) OPUS4-3344 Wissenschaftlicher Artikel Nanthakumar, S.S.; Lahmer, Tom; Rabczuk, Timon Detection of multiple flaws in piezoelectric structures using XFEM and level sets Detection of multiple flaws in piezoelectric structures using XFEM and level sets 14 Computer Methods in Applied Mechanics and Engineering 98 112 Institut für Strukturmechanik (ISM) OPUS4-3319 Wissenschaftlicher Artikel Zhao, Jiyun; Jiang, Jin-Wu; Wang, L.; Guo, Wanlin; Rabczuk, Timon Coarse-grained potentials of single-walled carbon nanotubes Coarse-grained potentials of single-walled carbon nanotubes Journal of the Mechanics and Physics of Solids Institut für Strukturmechanik (ISM) OPUS4-3323 Wissenschaftlicher Artikel Joshi, Suraj; Hildebrand, Jörg; Aloraier, Abdulkareem S.; Rabczuk, Timon Characterization of material properties and heat source parameters in welding simulation of two overlapping beads on a substrate plate This paper presents several aspects of characterization of welding heat source parameters in Goldak's double ellipsoidal model using Sysweld simulation of welding of two overlapping beads on a substrate steel plate. The overlap percentages ranged from 40% to 80% in increments of 10%. The new material properties of the fused metal were characterized using Weldware and their continuous cooling transformation curves. The convective and radiative heat transfer coefficients as well as the cooling time t8/5 were estimated using numerical formulations from relevant standards. The effects of the simulation geometry and mesh discretization were evaluated in terms of the factor F provided in Sysweld. Eventually, the parameters of Goldak's double ellipsoidal heat source model were determined for the welding simulation of overlapping beads on the plate and the simulated bead geometry, extent of the molten pool and the HAZ were compared with the macrographs of cross-sections of the experimental weldments. The results showed excellent matching, thus verifying this methodology for determination of welding heat source parameters. 6 Computational Materials Science 559 565 10.1016/j.commatsci.2012.11.029 Institut für Strukturmechanik (ISM) OPUS4-3326 Wissenschaftlicher Artikel Zhao, Jun-Hua; Lu, Lixin; Rabczuk, Timon Binding energy and mechanical stability of single- and multi-walled carbon nanotube serpentines Binding energy and mechanical stability of single- and multi-walled carbon nanotube serpentines The Journal of Chemical Physics 10.1063/1.4878115 Institut für Strukturmechanik (ISM) OPUS4-3329 Wissenschaftlicher Artikel Areias, Pedro; Pinto da Costa, A.; Rabczuk, Timon; Queiros de Melo, F. J. M.; Dias-da-Costa, D. An alternative formulation for quasi-static frictional and cohesive contact problems An alternative formulation for quasi-static frictional and cohesive contact problems 17 Computational Mechanics 807 824 Institut für Strukturmechanik (ISM) OPUS4-3337 Wissenschaftlicher Artikel Nguyen-Thanh, Nhon; Muthu, Jacob; Zhuang, Xiaoying; Rabczuk, Timon An adaptive three-dimensional RHT-splines formulation in linear elasto-statics and elasto-dynamics An adaptive three-dimensional RHT-splines formulation in linear elasto-statics and elasto-dynamics 16 Computational Mechanics 369 385 Institut für Strukturmechanik (ISM) OPUS4-3325 Wissenschaftlicher Artikel Budarapu, Pattabhi Ramaiah; Gracie, Robert; Bordas, Stéphane Pierre Alain; Rabczuk, Timon An adaptive multiscale method for quasi-static crack growth This paper proposes an adaptive atomistic- continuum numerical method for quasi-static crack growth. The phantom node method is used to model the crack in the continuum region and a molecular statics model is used near the crack tip. To ensure self-consistency in the bulk, a virtual atom cluster is used to model the material of the coarse scale. The coupling between the coarse scale and fine scale is realized through ghost atoms. The ghost atom positions are interpolated from the coarse scale solution and enforced as boundary conditions on the fine scale. The fine scale region is adaptively enlarged as the crack propagates and the region behind the crack tip is adaptively coarsened. An energy criterion is used to detect the crack tip location. The triangular lattice in the fine scale region corresponds to the lattice structure of the (111) plane of an FCC crystal. The Lennard-Jones potential is used to model the atom-atom interactions. The method is implemented in two dimensions. The results are compared to pure atomistic simulations; they show excellent agreement. 19 Computational Mechanics 1129 1148 10.1007/s00466-013-0952-6 Institut für Strukturmechanik (ISM) OPUS4-3322 Wissenschaftlicher Artikel Zhao, Jun-Hua; Jiang, Jin-Wu; Jia, Yue; Guo, Wanlin; Rabczuk, Timon A theoretical analysis of cohesive energy between carbon nanotubes, graphene and substrates Explicit solutions for the cohesive energy between carbon nanotubes, graphene and substrates are obtained through continuum modeling of the van der Waals interaction between them. The dependence of the cohesive energy on their size, spacing and crossing angles is analyzed. Checking against full atom molecular dynamics calculations and available experimental results shows that the continuum solution has high accuracy. The equilibrium distances between the nanotubes, graphene and substrates with minimum cohesive energy are also provided explicitly. The obtained analytical solution should be of great help for understanding the interaction between the nanostructures and substrates, and designing composites and nanoelectromechanical systems. 11 Carbon 108 119 10.1016/j.carbon.2013.01.041 Institut für Strukturmechanik (ISM) OPUS4-3312 Wissenschaftlicher Artikel Silani, Mohammad; Ziaei-Rad, S.; Talebi, Hossein; Rabczuk, Timon A Semi-Concurrent Multiscale Approach for Modeling Damage in Nanocomposites A Semi-Concurrent Multiscale Approach for Modeling Damage in Nanocomposites Theoretical and Applied Fracture Mechanics Institut für Strukturmechanik (ISM) OPUS4-3348 Wissenschaftlicher Artikel Zhuang, Xiaoying; Huang, Runqiu; Rabczuk, Timon; Liang, C. A coupled thermo-hydro-mechanical model of jointed hard rock for compressed air energy storage A coupled thermo-hydro-mechanical model of jointed hard rock for compressed air energy storage Mathematical Problems in Engineering Institut für Strukturmechanik (ISM) OPUS4-3327 Wissenschaftlicher Artikel Talebi, Hossein; Silani, Mohammad; Bordas, Stéphane Pierre Alain; Kerfriden, Pierre; Rabczuk, Timon A computational library for multiscale modeling of material failure A computational library for multiscale modeling of material failure Computational Mechanics Institut für Strukturmechanik (ISM) OPUS4-3324 Wissenschaftlicher Artikel Nguyen-Xuan, Hung; Nguyen, Hiep Vinh; Bordas, Stéphane Pierre Alain; Rabczuk, Timon; Duflot, Marc A cell-based smoothed finite element method for three dimensional solid structures This paper extends further the strain smoothing technique in finite elements to 8-noded hexahedral elements (CS-FEM-H8). The idea behind the present method is similar to the cell-based smoothed 4-noded quadrilateral finite elements (CS-FEM-Q4). In CSFEM, the smoothing domains are created based on elements, and each element can be further subdivided into 1 or several smoothing cells. It is observed that: 1) The CS-FEM using a single smoothing cell can produce higher stress accuracy, but insufficient rank and poor displacement accuracy; 2) The CS-FEM using several smoothing cells has proper rank, good displacement accuracy, but lower stress accuracy, especially for nearly incompressible and bending dominant problems. We therefore propose 1) an extension of strain smoothing to 8-noded hexahedral elements and 2) an alternative CS-FEM form, which associates the single smoothing cell issue with multi-smoothing cell one via a stabilization technique. Several numerical examples are provided to show the reliability and accuracy of the present formulation. 12 KSCE Journal of Civil Engineering 1230 1242 10.1007/s12205-012-1515-7 Institut für Strukturmechanik (ISM)