Matches in SemOpenAlex for { <https://semopenalex.org/work/W3212797890> ?p ?o ?g. }
Showing items 1 to 98 of
98
with 100 items per page.
- W3212797890 abstract "An efficient methodology to capture the nonlinear responses of combustor systems with pre-stress and Coulomb friction is developed. The combustor systems experience wear at the interfaces between components due to flow-induced vibrations. In particular, wear has been observed at the interface between the transition piece and the hula seal, and at the interface between the hula seal and the liner. These interfaces are pre-stressed, and their vibratory response has a softening nonlinearity caused by Coulomb friction combined with micro-slip. In addition, the contact between the hula seal and the transition piece is that between a convex surface and a concave surface. Hence, geometric nonlinearity of the contact stiffness in the normal direction is present also. These phenomena are hard to capture by full order finite element approaches because they require time marching or harmonic balancing of very large models. To address this issue, we develop reduced order models (ROMs) which are specifically designed to capture Coulomb friction (combined with micro-slip and macro-slip). To demonstrate the proposed approach, a simplified hula seal is placed between two very rigid plates (which relate to the transition piece and the liner). For validation, contact elements are used to model the interface between the plates and the hula seal. Transient dynamic analysis (TDA) in ANSYS is applied to the full order model. The model is shown to exhibit softening nonlinearity and micro-slip at all levels of pre-stress. To show that ROMs for this system are possible (i.e., they exist), we use proper orthogonal decomposition to show that the dynamics is dominated by a low number of spatial coherences. For a variety of frequency ranges and pre-stress levels, we show that a single such coherence is dominant. Next, low order models are proposed and their parameters are identified. A systematic method to identify these parameters is developed. Particular attention is paid to the amount of calculations needed for obtaining these parameters. Finally, the ROMs are validated by comparing their predictions with results from TDA for the full-order model. We show that these ROMs can accurately predict the nonlinear response of the system." @default.
- W3212797890 created "2021-11-22" @default.
- W3212797890 creator A5009728996 @default.
- W3212797890 creator A5035259259 @default.
- W3212797890 creator A5067034447 @default.
- W3212797890 creator A5068549665 @default.
- W3212797890 date "2013-11-15" @default.
- W3212797890 modified "2023-09-26" @default.
- W3212797890 title "Nonlinear Reduced-Order Models for the Structural Dynamics of Combustor Systems With Pre-Stress and Friction" @default.
- W3212797890 doi "https://doi.org/10.1115/imece2013-64740" @default.
- W3212797890 hasPublicationYear "2013" @default.
- W3212797890 type Work @default.
- W3212797890 sameAs 3212797890 @default.
- W3212797890 citedByCount "0" @default.
- W3212797890 crossrefType "proceedings-article" @default.
- W3212797890 hasAuthorship W3212797890A5009728996 @default.
- W3212797890 hasAuthorship W3212797890A5035259259 @default.
- W3212797890 hasAuthorship W3212797890A5067034447 @default.
- W3212797890 hasAuthorship W3212797890A5068549665 @default.
- W3212797890 hasConcept C121332964 @default.
- W3212797890 hasConcept C127413603 @default.
- W3212797890 hasConcept C135628077 @default.
- W3212797890 hasConcept C138885662 @default.
- W3212797890 hasConcept C142362112 @default.
- W3212797890 hasConcept C146978453 @default.
- W3212797890 hasConcept C147120987 @default.
- W3212797890 hasConcept C153349607 @default.
- W3212797890 hasConcept C158622935 @default.
- W3212797890 hasConcept C159985019 @default.
- W3212797890 hasConcept C179909247 @default.
- W3212797890 hasConcept C192562407 @default.
- W3212797890 hasConcept C195268267 @default.
- W3212797890 hasConcept C198394728 @default.
- W3212797890 hasConcept C21036866 @default.
- W3212797890 hasConcept C24890656 @default.
- W3212797890 hasConcept C2777755289 @default.
- W3212797890 hasConcept C2779372316 @default.
- W3212797890 hasConcept C2781098093 @default.
- W3212797890 hasConcept C2986328948 @default.
- W3212797890 hasConcept C41895202 @default.
- W3212797890 hasConcept C57879066 @default.
- W3212797890 hasConcept C62520636 @default.
- W3212797890 hasConcept C66938386 @default.
- W3212797890 hasConcept C78519656 @default.
- W3212797890 hasConcept C9342510 @default.
- W3212797890 hasConceptScore W3212797890C121332964 @default.
- W3212797890 hasConceptScore W3212797890C127413603 @default.
- W3212797890 hasConceptScore W3212797890C135628077 @default.
- W3212797890 hasConceptScore W3212797890C138885662 @default.
- W3212797890 hasConceptScore W3212797890C142362112 @default.
- W3212797890 hasConceptScore W3212797890C146978453 @default.
- W3212797890 hasConceptScore W3212797890C147120987 @default.
- W3212797890 hasConceptScore W3212797890C153349607 @default.
- W3212797890 hasConceptScore W3212797890C158622935 @default.
- W3212797890 hasConceptScore W3212797890C159985019 @default.
- W3212797890 hasConceptScore W3212797890C179909247 @default.
- W3212797890 hasConceptScore W3212797890C192562407 @default.
- W3212797890 hasConceptScore W3212797890C195268267 @default.
- W3212797890 hasConceptScore W3212797890C198394728 @default.
- W3212797890 hasConceptScore W3212797890C21036866 @default.
- W3212797890 hasConceptScore W3212797890C24890656 @default.
- W3212797890 hasConceptScore W3212797890C2777755289 @default.
- W3212797890 hasConceptScore W3212797890C2779372316 @default.
- W3212797890 hasConceptScore W3212797890C2781098093 @default.
- W3212797890 hasConceptScore W3212797890C2986328948 @default.
- W3212797890 hasConceptScore W3212797890C41895202 @default.
- W3212797890 hasConceptScore W3212797890C57879066 @default.
- W3212797890 hasConceptScore W3212797890C62520636 @default.
- W3212797890 hasConceptScore W3212797890C66938386 @default.
- W3212797890 hasConceptScore W3212797890C78519656 @default.
- W3212797890 hasConceptScore W3212797890C9342510 @default.
- W3212797890 hasLocation W32127978901 @default.
- W3212797890 hasOpenAccess W3212797890 @default.
- W3212797890 hasPrimaryLocation W32127978901 @default.
- W3212797890 hasRelatedWork W1969325144 @default.
- W3212797890 hasRelatedWork W2040313282 @default.
- W3212797890 hasRelatedWork W2040858241 @default.
- W3212797890 hasRelatedWork W2047315247 @default.
- W3212797890 hasRelatedWork W2062027785 @default.
- W3212797890 hasRelatedWork W2071224001 @default.
- W3212797890 hasRelatedWork W2180990858 @default.
- W3212797890 hasRelatedWork W2314409083 @default.
- W3212797890 hasRelatedWork W2400135871 @default.
- W3212797890 hasRelatedWork W2521034958 @default.
- W3212797890 hasRelatedWork W2734647439 @default.
- W3212797890 hasRelatedWork W2752561932 @default.
- W3212797890 hasRelatedWork W281886804 @default.
- W3212797890 hasRelatedWork W2898087911 @default.
- W3212797890 hasRelatedWork W2905605179 @default.
- W3212797890 hasRelatedWork W2912648766 @default.
- W3212797890 hasRelatedWork W2918011668 @default.
- W3212797890 hasRelatedWork W2981614542 @default.
- W3212797890 hasRelatedWork W3043898177 @default.
- W3212797890 hasRelatedWork W2556572423 @default.
- W3212797890 isParatext "false" @default.
- W3212797890 isRetracted "false" @default.
- W3212797890 magId "3212797890" @default.
- W3212797890 workType "article" @default.