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1.	Ekevid, Torbjörn, et al. (author) Adaptive solid wave propagation : Influences of boundary conditions in high-speed train applications 2006 In: Computer Methods in Applied Mechanics and Engineering. - : Elsevier. - 0045-7825. ; 195:4-6, s. 236-250 Journal article (peer-reviewed)abstract Wave propagation in solid materials is of great interest in many engineering applications. The fact that the area of interest changes with time creates a number of computational problems such as the need for a mesh density varying in space and time. This means that the mesh must be continuously updated and controlled, rendering a large demand of computer effort. In certain applications like railway mechanics there are mobile loads. A load speed close to the natural speed in the underlying soil causes specific problems, shock waves being one of them. The transmitted waves have to leave the defined finite element domain without reflection, which imposes a need for certain modelling methods. The paper will deal with quality controlled FE-procedures for wave propagation including error estimation and mesh refinement/coarsening. As an application an important problem from railway mechanics is considered. When a high-speed train approaches an area with decreasing thickness of underlying soft soil on a stiff rock it is expected that the reflection of the wave will increase the total amplitude of the wave. We will study this problem with the procedures described above in full 3D with partly absorbing boundaries
2.	Samuelsson, Alf, 1929, et al. (author) Finite element adaptivity in dynamics and elastoplasticity 1991 In: The finite element method in the 1990's. ; , s. 11- Book chapter (other academic/artistic)
3.	Wiberg, Nils-Erik, 1938, et al. (author) A postprocessed error estimate and an adaptive procedure for the semidiscrete finite element method in dynamic analyses 1994 In: International Journal of Numerical Methods in Engineering. ; 37, s. pp. 3585-3603 Journal article (peer-reviewed)
4.	Wiberg, Nils-Erik, 1938, et al. (author) An Efficient Postprocessing Technique for Stress Problems Based on Superconvergent Derivatives and Equilibrium 1992 In: Numerical Methods in Engineering '92, Proceedings of the First European Conference, Brussels, Belgium, 7-11 September 1992. ; , s. 8 pp-, s. 8- Conference paper (peer-reviewed)
5.	Wiberg, Nils-Erik, 1938, et al. (author) Improved element stresses for node and element patches using superconvergent patch recovery 1995 In: Communications in Numerical Methods in Engineering. ; 11, s. 619-627 Reports (other academic/artistic)
6.	3rd Seminar on Pavement Design and Road Mechanics 2000 Reports (other academic/artistic)
7.	Bausys, Romualdas, et al. (author) Adaptive Finite Element Strategy for Acoustic Problems 1999 In: Journal of Sound and Vibration. ; 2265, s. pp. 905-922 Journal article (peer-reviewed)
8.	Bausys, Romaldas, et al. (author) Postprocessing Techniques and h-Adaptive Finite Element-Eigenproblem Analysis 2001 In: Computers and Structures. ; 79:22-25, s. pp. 2039-2052 Journal article (peer-reviewed)
9.	Ekevid, Torbjörn, 1973, et al. (author) A comparison of parallel implementation of explicit DG and central difference method 2002 In: Communication in Numerical Methods in Engineering. ; 18, s. 585-597 Journal article (peer-reviewed)
10.	Ekevid, Torbjörn, 1973, et al. (author) Adaptive FEA of Wave Propagation Induced by High-Speed Trains 2001 In: Computers and Structures. ; 79:29-30, s. 2693-2704 Journal article (peer-reviewed)

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Type of publication: reports (149); conference paper (104); journal article (85); book (13); book chapter (10); editorial collection (9); show more...; doctoral thesis (1); licentiate thesis (1); show less...

Type of content: other academic/artistic (194); peer-reviewed (178)

Author/Editor: Wiberg, Nils-Eri... (372)Undo refine; Runesson, Kenneth, 1 ... (50); Tägnfors, Harald, 19 ... (49); Kettil, Per, 1972 (45); Ekevid, Torbjörn, 19 ... (32); Li, Xiangdong, 1965 (32); show more...; Samuelsson, Alf, 192 ... (25); Hager, Patrik, 1968 (17); Bausys, Romualdas (16); Lane, Håkan, 1975 (14); Larsson, Ragnar, 196 ... (12); Abdulwahab, Fethi, 1 ... (8); Frykestig, Jan, 1962 (8); Tullberg, Odd, 1952 (7); Möller, Peter, 1955 (7); Bernspång, Lars, 195 ... (6); Li, Martin X.D. (6); Hansbo, Peter F G, 1 ... (5); Friberg, Olof, 1953 (5); Engström, Gustav, 19 ... (4); Huvstig, Anders (3); Connell, Mike, 1973 (3); Xie, Y. M. (3); Andersson, Owe (2); Cedervall, Krister (2); Hansbo, Sven, 1924 (2); Enelund, Mikael, 196 ... (1); Gylltoft, Kent (1); Engström, Björn (1); Nilsson, Lars-Olof (1); Olsson, Johan (1); Axelsson, Kenneth, 1 ... (1); Backlund, Mikael (1); Färnstrand, Mats (1); Kruse, Patrik (1); Oscarsson, Pär (1); Smekal, Alexander (1); Bausys, Romaldas (1); Ekevid, Torbjörn (1); Bolteus, Lars (1); Engström, Björn, 195 ... (1); Glemberg, Ronny, 194 ... (1); Gylltoft, Kent, 1945 (1); Petersson, Hans, 194 ... (1); Wolfbrandt, Arne (1); Bergan, Pål (1); Larsen, Per (1); Söreide, Tore (1); Makovicka, D. (1); Makovicka, Daniel (1); show less...

University: Chalmers University of Technology (372); Linnaeus University (1)

Language: English (359); Swedish (13)

Research subject (UKÄ/SCB): Engineering and Technology (372); Natural sciences (3)

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