Готові списки джерел за темами / Craige Bampton

Добірка наукової літератури з теми "Craige Bampton"

Автор: Grafiati
Опубліковано: 14 березня 2023

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Статті в журналах з теми "Craige Bampton"

1

Wang, Gengxiang, Zepeng Niu, and Ying Feng. "Improved Craig–Bampton Method Implemented into Durability Analysis of Flexible Multibody Systems." Actuators 12, no. 2 (February 2, 2023): 65. http://dx.doi.org/10.3390/act12020065.

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Анотація:
The Craig–Bampton method is frequently applied in most commercial multibody dynamic software. Nevertheless, the Craig–Bampton modes only represent the free-free modes in flexible multibody systems. However, the free-free modes are incapable of all engineering applications. Hence, a rational set of reference conditions must be correctly chosen to define a unique displacement field. Firstly, a simple 2D beam with two revolute joints is taken as an example to prove that the free-free modes are not suitable for all engineering applications, and the results are validated by ANSYS and the analytical solution. Secondly, the Craig–Bampton method is improved by two different methods: (i) the reference conditions are added to the original Craig–Bampton matrix and (ii) the reference conditions are applied to the shape functions to redefine the mass and stiffness matrices before constructing the original Craig–Bampton matrix. This implementation illustrates that the improved Craig–Bampton matrix can not only generate the free-free modes but is also suitable for the non-free-free modes. Finally, two discrepant reference conditions are imposed to obtain the dynamic response of the flexible connecting rod based on the improved Craig–Bampton method, which is validated using the normal mode approach. Simulations show that the improved Craig–Bampton method can be used as a general-purpose method in durability analysis.
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2

Kluger, Jocelyn, Lynn Crevier, and Martin Udengaard. "Speed-Dependent Eigenmodes for Efficient Simulation of Transverse Rotor Vibration." Vibration 5, no. 4 (October 31, 2022): 732–54. http://dx.doi.org/10.3390/vibration5040043.

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Accurate, computationally efficient simulations enable engineers to design high-performing, cost-efficient, lightweight machines that can leverage models of predictive controls and digital twin predictive maintenance schedules. This study demonstrates a new speed-dependent eigenmode method for accurately and efficiently simulating shaft transverse vibrations. The method involves first independently computing shaft eigenmodes over a range of operating speeds, then correlating the eigenmodes across the different speeds during compilation, and finally adjusting modal properties gradually in accordance with a lookup method during simulation. The new method offers several distinct advantages over the traditional static eigenmodes and Craig-Bampton methods. The new method maintains accuracy over a large range of shaft rotation speeds whereas the static eigenmodes method does not. The new method typically requires fewer modal degrees of freedom than the Craig-Bampton method. Whereas the Craig-Bampton method is limited to modeling changes at the boundaries, the new method is suitable for modeling changing body properties as well as boundary-based changes. For this paper, a fluid-bearing-supported 10 MW direct-drive wind turbine drive shaft is tested virtually in a simulation model developed in Simscape™ Driveline™. Using the simulation statistics, this study compares the accuracy and computational efficiency of the speed-dependent eigenmode method to the traditional finite lumped element, static eigenmode, and Craig–Bampton methods. This paper shows that the new method simulates the chosen system 5 times faster than the traditional lumped mass method and 2.4 times faster than the Craig-Bampton method.
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3

Leoro, Jose, Vladislav Borisenko, Egor Degilevich, and Anton Didenko. "Application of the Craig-Bampton method to blade rotation." E3S Web of Conferences 258 (2021): 09075. http://dx.doi.org/10.1051/e3sconf/202125809075.

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Анотація:
The Craig-Bampton method has repeatedly shown its effectiveness in modelling the deformable solid body motion and in practical experience of implementing this approach in engineering software. It reduces the motion equations system which is obtained by approximating small elastic displacements of the body finite element model with a set of acceptable modes. The application of this method in engineering improves the computing time performance and requires less computational resources. In this article the effectiveness of using the Craig-Bampton method for the blade rotation is evaluated. The need to consider the inertial relationship between large body displacements and elastic deformations was investigated. As a result of the numerical solution, it was obtained that the method works correctly for the investigated task. It allows us to conclude that the Craig-Bampton method is applicable for the blade rotation process.
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4

Kim, Jin-Gyun, and Phill-Seung Lee. "An enhanced Craig-Bampton method." International Journal for Numerical Methods in Engineering 103, no. 2 (March 26, 2015): 79–93. http://dx.doi.org/10.1002/nme.4880.

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5

Morgan, J. A., C. Pierre, and G. M. Hulbert. "Calculation of Component Mode Synthesis Matrices From Measured Frequency Response Functions, Part 2: Application." Journal of Vibration and Acoustics 120, no. 2 (April 1, 1998): 509–16. http://dx.doi.org/10.1115/1.2893859.

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Анотація:
This paper demonstrates how to calculate Craig-Bampton component mode synthesis matrices from measured frequency response functions. The procedure is based on a modified residual flexibility method, from which the Craig-Bampton CMS matrices are recovered, as presented in the companion paper, Part I (Morgan et al., 1998). A system of two coupled beams is analyzed using the experimentally-based method. The individual beams’ CMS matrices are calculated from measured frequency response functions. Then, the two beams are analytically coupled together using the test-derived matrices. Good agreement is obtained between the coupled system and the measured results.
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6

Morgan, J. A., C. Pierre, and G. M. Hulbert. "Calculation of Component Mode Synthesis Matrices From Measured Frequency Response Functions, Part 1: Theory." Journal of Vibration and Acoustics 120, no. 2 (April 1, 1998): 503–8. http://dx.doi.org/10.1115/1.2893858.

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Анотація:
This paper presents a new method to calculate the so-called Craig-Bampton component mode synthesis (CMS) matrices from measured frequency response functions. The procedure is based on a modified residual flexibility method, from which the Craig-Bampton CMS matrices are recovered. Experimental implementation of the method requires estimating the modal parameters corresponding to the measured free boundary modes and the Maclaurin series expansion coefficients corresponding to the omitted modes. Theoretical developments are presented in the present paper, Part 1. The performance of the new method is then demonstrated in Part 2 (Morgan et al., 1998) by comparison of experiment and analysis for a simple two-beam system.
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7

Boo, Seung-Hwan, Jeong-Ho Kim, and Phill-Seung Lee. "Towards improving the enhanced Craig-Bampton method." Computers & Structures 196 (February 2018): 63–75. http://dx.doi.org/10.1016/j.compstruc.2017.10.017.

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8

Borisenko, V., J. Leoro, and A. Didenko. "Main rotor blade modeling approaches comparison. Finite element and Craig-Bampton methods." Journal of Physics: Conference Series 2131, no. 3 (December 1, 2021): 032096. http://dx.doi.org/10.1088/1742-6596/2131/3/032096.

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Abstract The paper focuses on the helicopter main rotor blade FE model. And the main goal is to prove the feasibility of the helicopter main rotor MBD model in calculations of blade deformation as a result of applied aerodynamic forces. FE model is used as a basis for two different computational methods. A mathematical approach in the MBD based on the Craig-Bampton method on the one hand. And finite element model on the other hand. The results of high-frequency blade rotations are obtained. Calculations of these models are compared in order to determine the best method for modeling a linear-elastic blade. By the results, it is necessary to consider the preloaded state of the blade when using the Craig-Bampton method approach. The comparison of blade nodes displacements at various external conditions for both models are given. The influence of rotor MBS model damping parameters on the amplitude of blade oscillations under sinusoidal action is considered.
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9

Rixen, Daniel J. "A dual Craig–Bampton method for dynamic substructuring." Journal of Computational and Applied Mathematics 168, no. 1-2 (July 2004): 383–91. http://dx.doi.org/10.1016/j.cam.2003.12.014.

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10

Pařík, Petr, Jin-Gyun Kim, Martin Isoz, and Chang-uk Ahn. "A Parallel Approach of the Enhanced Craig–Bampton Method." Mathematics 9, no. 24 (December 16, 2021): 3278. http://dx.doi.org/10.3390/math9243278.

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Анотація:
The enhanced Craig–Bampton (ECB) method is a novel extension of the original Craig–Bampton (CB) method, which has been widely used for component mode synthesis (CMS). The ECB method, using residual modal compensation that is neglected in the CB method, provides dramatic accuracy improvement of reduced matrices without an increasing number of eigenbasis. However, it also needs additional computational requirements to treat the residual flexibility. In this paper, an efficient parallelization of the ECB method is presented to handle this issue and accelerate the applicability for large-scale structural vibration problems. A new ECB formulation within a substructuring strategy is derived to achieve better scalability. The parallel implementation is based on OpenMP parallel architecture. METIS graph partitioning and Linear Algebra Package (LAPACK) are used to automated algebraic partitioning and computational linear algebra, respectively. Numerical examples are presented to evaluate the accuracy, scalability, and capability of the proposed parallel ECB method. Consequently, based on this work, one can expect effective computation of the ECB method as well as accuracy improvement.
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Більше джерел

Дисертації з теми "Craige Bampton"

1

Lin, Yi-shih. "Model Reduction For a Restrained Deformable Body." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1412%5F1%5Fm.pdf&type=application/pdf.

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2

Zhu, Dapeng. "Decentralized structural damage detection and model updating with mobile and wireless sensors." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/54261.

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Recent years have seen increasing research interest in structural health monitoring (SHM). Among the many advances in SHM research, “smart” wireless sensors capable of embedded computing and wireless communication have been highly attractive. Wireless communication in SHM systems was originally proposed to significantly reduce the monetary and time cost for installing lengthy cables in an SHM system. Besides wireless sensing, the next revolution in sensor networks has been predicted to be mobile sensor networks that implant mobility into traditional wireless sensor networks. This research explores decentralized structural model updating and damage detection using mobile and wireless sensors. In the first stage of this research, mobile sensing nodes (MSNs) are developed for SHM purposes. The MSNs can maneuver upon structures built with ferromagnetic/steel materials, conduct measurement, and communicate with pears or remote servers wirelessly. The performance of the MSNs is validated through laboratory and field experiments. To further investigate the mobile sensing strategy, a decentralized structural damage detection procedure is proposed herein for the MSNs using transmissibility functions. Laboratory experiments are conducted on a steel portal frame where various structure damage scenarios are emulated. Besides experiments with MSNs, this study also investigates the nature of transmissibility functions for damage detection in an analytical manner based on a general multi-DOF spring-mass-damper system. Finally, this research also explores substructure model updating through minimization of modal dynamic residuals, which can best benefit from dense mobile or wireless sensor data concentrated in one area. Craig-Bampton transform is adopted to condense the structural model, and minimization of the modal dynamic residuals is determined as the optimization objective. An iterative linearization procedure is adopted for efficiently solving the optimization problem. The presented substructure updating method is validated through a few numerical examples. For comparison, a conventional approach minimizing modal property differences is also applied, and shows worse updating accuracy than the proposed approach. The performance of the proposed substructure model updating approach is further investigated on the effects of substructure location and size.
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3

Beck, Joseph A. "Fundamental Understanding of Blisk Analytical Response." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1367848915.

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4

Batailly, Alain. "Simulation de l'interaction rotor/stator pour des turbo-machines aéronautiques en configuration non-accidentelle." Phd thesis, Ecole centrale de nantes - ECN, 2008. http://tel.archives-ouvertes.fr/tel-00364945.

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Анотація:
Dans le cadre de la conception de turbo-machines aéronautiques, l'amélioration du rendement est assurée, entre autres, par la diminution du jeu fonctionnel entre les parties tournantes et statiques, telles que les roues aubagées et le carter qui les entoure. Cette stratégie a des conséquences sur le comportement vibratoire des turbo-machines en favorisant l'apparition de contacts structuraux entre les sommets d'aubes et le carter, par exemple. Lorsque plusieurs points de contact co-existent, des phénomènes d'interaction modale peuvent apparaître. La simulation de ces phénomènes, potentiellement dangereux, dans un cadre indutriel est au cœur de notre étude. Du fait de la dimension du problème à traiter, des méthodes de réduction modale sont utilisées : une méthode à interfaces fixes, la méthode de Craig-Bampton, et une méthode à interfaces libres, la méthode de Craig-Martinez. L'étude porte notamment sur la performance de ces méthodes de réduction lorsqu'elles sont associées à une non linéarité de type contact. Le phénomène d'interaction modale est tout d'abord étudié sur des modèles 2D simplifiés avec l'analyse de la sensibilité des régimes d'interaction à la taille des modèles réduits, puis sur les modèles 3D industriels pour lesquels la solution vraie n'est pas accessible. La gestion du contact dans le 3D fait appel aux B-splines bicubiques surfaciques afin d'assurer de meilleures propriétés à la surface de contact et de faciliter la résolution numérique. Les résultats obtenus à l'aide des deux méthodes de réduction modale sont comparés et permettent de déterminer la méthode la plus appropriée pour l'industrialisation du code présentée en annexe de ce mémoire.
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Частини книг з теми "Craige Bampton"

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Kuether, Robert J., and Matthew S. Allen. "Craig-Bampton Substructuring for Geometrically Nonlinear Subcomponents." In Dynamics of Coupled Structures, Volume 1, 167–78. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04501-6_15.

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2

Gruber, Fabian M., Johannes B. Rutzmoser, and Daniel J. Rixen. "Generalized Craig-Bampton Method Using Robin Boundary Conditions." In Topics in Modal Analysis & Testing, Volume 10, 111–15. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30249-2_8.

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3

Gruber, Fabian M., Tim L. Bürchner, and Daniel Jean Rixen. "Dual Craig-Bampton Method with Reduction of Interface Coordinates." In Dynamics of Coupled Structures, Volume 4, 143–63. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54930-9_14.

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4

Allen, Mathew S., Daniel C. Kammer, and Randy L. Mayes. "Experimental Based Substructuring Using a Craig-Bampton Transmission Simulator Model." In Dynamics of Coupled Structures, Volume 1, 91–104. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04501-6_8.

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5

Hughes, Patrick J., Wesley Scott, Wensi Wu, Robert J. Kuether, Matthew S. Allen, and Paolo Tiso. "Interface Reduction on Hurty/Craig-Bampton Substructures with Frictionless Contact." In Nonlinear Dynamics, Volume 1, 1–16. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74280-9_1.

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6

Mayes, Randall L. "The Craig–Mayes Reduction: A Craig–Bampton Experimental Dynamic Substructure Using the Transmission Simulator Method." In The Mechanics of Jointed Structures, 451–63. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56818-8_25.

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7

Cammarata, Alessandro, Rosario Sinatra, and Pietro Davide Maddio. "An extended Craig-Bampton method for the modal analysis of mechanisms." In Advances in Mechanism and Machine Science, 3329–38. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20131-9_329.

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8

Mayes, Randall L. "A Craig-Bampton Experimental Dynamic Substructure Using the Transmission Simulator Method." In Dynamics of Coupled Structures, Volume 4, 139–48. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15209-7_13.

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Mayes, Randall L. "A Modal Craig-Bampton Substructure for Experiments, Analysis, Control and Specifications." In Dynamics of Coupled Structures, Volume 4, 93–98. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15209-7_9.

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10

Kammer, Daniel C., Mathew S. Allen, and Randy L. Mayes. "Formulation of a Craig-Bampton Experimental Substructure Using a Transmission Simulator." In Topics in Experimental Dynamic Substructuring, Volume 2, 321–31. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6540-9_26.

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Тези доповідей конференцій з теми "Craige Bampton"

1

Mapa, Lidianne de Paula Pinto, Francisco Neves, Artur Ladeira, Reinaldo Reis, and Gustavo Paulinelli Guimarães. "DYNAMIC MODAL ANALYSIS BY CRAIG-BAMPTON METHOD." In 25th International Congress of Mechanical Engineering. ABCM, 2019. http://dx.doi.org/10.26678/abcm.cobem2019.cob2019-1746.

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2

Gruber, Fabian M., Max Gille, and Daniel J. Rixen. "TIME INTEGRATION OF DUAL CRAIG-BAMPTON REDUCED SYSTEMS." In 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering. Athens: Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2017. http://dx.doi.org/10.7712/120117.5481.17213.

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3

de Kraker, Bram, and Dick H. van Campen. "Modification of the Craig-Bampton CMS Procedure for General Systems." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/vib-4030.

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Анотація:
Abstract In this paper the Craig-Bampton CMS procedure for the reduction and successive coupling of undamped structural subsystems with symmetric system matrices will be modified for the case of general damping and nonsymmetric matrices. This leads to a Ritz-transformation matrix based on left- and right static and dynamic modes (complex vectors). The physical meaning of these modes will be illustrated and two examples (a damped beam system and a rotor-system with gyroscopy and a cross-coupling bearing model) will be presented and discussed showing the potential of this extension of the Craig-Bampton procedure.
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4

Kammer, Daniel, and Michael Triller. "Selection of component modes for Craig-Bampton substructure representations." In 36th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-1299.

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TRILLER, MICHAEL, and DANIEL KAMER. "Controllability & Observability Measures for Craig-Bampton Substructure Representations." In 34th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-1311.

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6

Wagner, Julia L., Michael Bohm, and Oliver Sawodny. "Decentralized structural control using Craig-Bampton reduction and local controller design." In 2020 IEEE International Conference on Industrial Technology (ICIT). IEEE, 2020. http://dx.doi.org/10.1109/icit45562.2020.9067158.

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7

Orzechowski, Grzegorz, and Aki M. Mikkola. "Boundary Conditions and Craig-Bampton Substructuring Technique With Free-Free Modes." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67397.

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The floating frame of reference formulation allows for description of the kinematics of a deformable body using generalized coordinates that define the body local reference frame and deformations with respect to that frame. In practical applications, the formulation need to be used in conjunction with of a model order reduction approach. The paper investigates the usage of the model reduction through the Craig-Bampton method with the mean-axis reference frame conditions. Analysis involves static numerical examples of the beam structures, modeled using commercial packages with different boundary conditions and loads. It is shown that commonly employed orthonormalization technique dissolves the influence of the static correction modes in many assumed deformation modes of a deformable body. Consequently, a care should be taken in model validation when this popular approach for modeling flexible bodies is used.
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8

Kuether, Robert J., Peter B. Coffin, and Adam R. Brink. "On Hurty/Craig-Bampton Substructuring With Interface Reduction on Contacting Surfaces." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67553.

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Анотація:
Structural dynamics models with localized nonlinearities can be reduced using Hurty/Craig-Bampton component mode synthesis methods. The interior degrees-of-freedom of the linear subcomponents are reduced with a set of dynamic fixed-interface modes while the static constraint modes preserve the physical coordinates at which the nonlinear restoring forces are applied. For finite element models with a highly refined mesh at the boundary, a secondary modal analysis can be performed to reduce the interface down to a truncated set of local-level characteristic constraint modes. In this research, the cost savings and accuracy of the interface reduction technique are evaluated on a simple example problem involving two elastic blocks coming into contact.
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Carassale, Luigi, and Mirko Maurici. "Interface Reduction in Craig-Bampton Component Mode Synthesis by Orthogonal Polynomial Series." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64583.

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Анотація:
The component mode synthesis based on the Craig-Bampton method has two strong limitations that appear when the number of the interface degrees of freedom is large. First, the reduced-order model obtained is overweighed by many unnecessary degrees of freedom. Second, the reduction step may become extremely time consuming. Several interface reduction techniques addressed successfully the former problem, while the latter remains open. In this paper we tackle this latter problem through a simple interface-reduction technique based on an a-priory choice of the interface modes. An efficient representation of the interface displacement field is achieved adopting a set of orthogonal basis functions determined by the interface geometry. The proposed method is compared with other existing interface reduction methods on a case study regarding a rotor blade of an axial compressor.
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10

Gruber, Fabian M., Dominik M. Stahl, and Daniel J. Rixen. "ACCURATE COMPUTATION OF FREQUENCY RESPONSE FUNCTIONS OF DUAL CRAIG-BAMPTON REDUCED SYSTEMS." In 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering. Athens: Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2019. http://dx.doi.org/10.7712/120119.7080.18832.

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