000015693 001__ 15693
000015693 005__ 20161115135327.0
000015693 04107 $$aeng
000015693 046__ $$k2013-06-12
000015693 100__ $$aMontenegro, P-A.
000015693 24500 $$aA Nonlinear Vehicle Structure Interaction Methodology With Wheel Rail Detachment and Reattachment

000015693 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015693 260__ $$bNational Technical University of Athens, 2013
000015693 506__ $$arestricted
000015693 520__ $$2eng$$aA vehicle-structure interaction methodology with a nonlinear contact formulation based on contact and target elements has been developed. To solve the dynamic equations of motion, an incremental formulation has been used due to the nonlinear nature of the contact mechanics, while a procedure based on the Lagrange multiplier method imposes the contact constraint equations when contact occurs. The system of nonlinear equations is solved by an efficient block factorization solver that reorders the system matrix and isolates the nonlinear terms that belong to the contact elements or to other nonlinear elements that may be incorporated in the model. Such procedure avoids multiple unnecessary factorizations of the linear terms during each Newton iteration, making the formulation efficient and computationally attractive. A numerical example has been carried out to validate the accuracy and efficiency of the present methodology. The obtained results have shown a good agreement with the results obtained with the commercial finite element software ANSYS.

000015693 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015693 653__ $$aVehicle-Structure Interaction, Dynamic Analysis, Nonlinear Contact, Lagrange Multipliers, Bridge.

000015693 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015693 720__ $$aMontenegro, P-A.$$iNeves, G-M.$$iAzevedo Ferreira, M-A.$$iCalCada, R.
000015693 8560_ $$ffischerc@itam.cas.cz
000015693 8564_ $$s192173$$uhttps://invenio.itam.cas.cz/record/15693/files/1269.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-MS 07 DYNAMIC EFFECTS ON HIGH-SPEED RAILWAY TRACKS
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000015693 962__ $$r15525
000015693 980__ $$aPAPER