A free interface component mode synthesis method for viscoelastically damped systems

Ding, Zhe

doi:10.1016/j.jsv.2015.11.040

Cited by 15 publications

(4 citation statements)

References 68 publications

(102 reference statements)

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“…The precision of MSE has been improved using modifying strategies to meet the engineering requirement [21,22]. Lv et al [23] used absolute value method of strain energy (AVMSE) to analyze the damping characteristics of structures.…”

Section: State Of the Artmentioning

confidence: 99%

Modified Modal Strain Energy Method for Analyzing the Dynamic Damping Behavior of Constrained Viscoelastic Structures

Sun¹,

Wang²,

Li³

et al. 2017

JESTR

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Modal strain energy (MSE) method is an efficient approximation approach for kinetics parameter calculation of constrained viscoelastic structures. MSE fails to determine the precise dynamic behavior of viscoelastic structures when the stiffness matrix is a complex one. To address this issue, this study proposes a new modified MSE method to calculate the loss factor and natural frequency of a constrained viscoelastic structure on the basis of the correlation analysis of the current modal strain method. The modifying factor changed with the amplitude of the modal order loss factor. A prototype system with four parameters, which was equivalent to a viscoelastic sandwich beam or plate, was used to analyze the error between the new modified method and current methods. The proposed method was applied to a viscoelastic suspension. Results show that the proposed method obtains minimum relative errors of 1.2% and 2.3% for structural loss factor and natural frequency as compared with existing methods. This study provides a certain reference for the performance analysis, structural design, and improvement of constrained viscoelastic structures.

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Section: State Of the Artmentioning

confidence: 99%

Modified Modal Strain Energy Method for Analyzing the Dynamic Damping Behavior of Constrained Viscoelastic Structures

Sun¹,

Wang²,

Li³

et al. 2017

JESTR

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“…Certainly, a large number of papers dealing with CMS approaches have been published in the last decades and, in recent years, free-free [15][16][17], free-fixed [18] and fixed-fixed [14] interface conditions have been addressed. Uncertainty propagation in CMS models has also received much attention [19][20][21] and some CMS methods for built-up systems with nonlinearities [22,23] and damping [24,25] have been developed.…”

Section: Introductionmentioning

confidence: 99%

An artificial spring component mode synthesis method for built-up structures

Deng

Guasch

Maxit

et al. 2023

International Journal of Mechanical Sciences

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“…The CMS approach [16][17][18] has earned a great following in the aerospace sector thanks to its matrix condensation reduction well suited for substructuring problems [19][20][21][22]. Young [3] proposed the so called controlled component synthesis (CCS) based on the CMS theory for large flexible structures like planar trusses.…”

Section: Introductionmentioning

confidence: 99%

Finite element based N-Port model for preliminary design of multibody systems

Sanfedino

Alazard

Pommier-Budinger

et al. 2018

Journal of Sound and Vibration

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Keywords: Multibody dynamics Mechanical preliminary design Bending plate Model reduction a b s t r a c tThis article presents and validates a general framework to build a linear dynamic Finite Element-based model of large flexible structures for integrated Control/Structure design. An extension of the Two-Input Two-Output Port (TITOP) approach is here developed. The authors had already proposed such framework for simple beam-like structures: each beam was considered as a TITOP sub-system that could be interconnected to another beam thanks to the ports. The present work studies bodies with multiple attaching points by allowing complex interconnections among several sub-structures in tree-like assembly. The TITOP approach is extended to generate NINOP (N-Input N-Output Port) models. A Matlab toolbox is developed integrating beam and bending plate elements. In particular a NINOP formulation of bending plates is proposed to solve analytic two-dimensional problems. The computation of NINOP models using the outputs of a MSC/Nastran modal analysis is also investigated in order to directly use the results provided by a commercial finite element software. The main advantage of this tool is to provide a model of a multibody system under the form of a block diagram with a minimal number of states. This model is easy to operate for preliminary design and control. An illustrative example highlights the potential of the proposed approach: the synthesis of the dynamical model of a spacecraft with two deployable and flexible solar arrays.

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A free interface component mode synthesis method for viscoelastically damped systems

Cited by 15 publications

References 68 publications

Modified Modal Strain Energy Method for Analyzing the Dynamic Damping Behavior of Constrained Viscoelastic Structures

Modified Modal Strain Energy Method for Analyzing the Dynamic Damping Behavior of Constrained Viscoelastic Structures

An artificial spring component mode synthesis method for built-up structures

Finite element based N-Port model for preliminary design of multibody systems

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