A mortar formulation including viscoelastic layers for vibration analysis

Paolini, Alexander; Kollmannsberger, Stefan; Rank, Ernst; Horger, Thomas; Wohlmuth, Barbara

doi:10.1007/s00466-018-1582-9

Cited by 2 publications

(3 citation statements)

References 28 publications

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“…The standard approach constrains the integrals of the relative displacements to vanish, whereas the coupling condition of the modified mortar method presented in [31] includes an isotropic viscoelastic layer in a dimensionally reduced way. In the scope of this work, the modified mortar formulation was extended by an orthotropic constitutive equation in order to be able to represent layers made of cubic-symmetric microstructures.…”

Section: Comparison Of Conforming and Mortar-based Fe Modelsmentioning

confidence: 99%

“…Solutions to these problems can be the use of the finite cell method (FCM) and computational homogenization [29,30]. In addition, if the microstructure is utilized in the form of a damping layer between the components of an assembly, a modified mortar formulation can further improve the modeling and numerical efficiency [31]. It allows the viscoelastic behavior of the layer to be integrated into the mortar coupling.…”

Section: Introductionmentioning

confidence: 99%

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Multiscale Analysis of High Damping Composites Using the Finite Cell and the Mortar Method

Paolini

Korshunova

Kollmannsberger

et al. 2021

Int. J. Str. Stab. Dyn.

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Metal lattice structures filled with a damping material such as polymer can exhibit high stiffness and good damping properties. Mechanical simulations of parts made from these composites can however require a large modeling and computational effort because relevant features such as complex geometries need to be represented on multiple scales. The finite cell method (FCM) and numerical homogenization are potential remedies for this problem. Moreover, if the microstructures are placed in between the components of assemblies for vibration reduction, a modified mortar technique can further increase the efficiency of the complete simulation process. With this method, it is possible to discretize the components separately and to integrate the viscoelastic behavior of the composite damping layer into their weak coupling. This paper provides a multiscale computational material design framework for such layers, based on FCM and the modified mortar technique. Its efficiency even in the case of complex microstructures is demonstrated in numerical studies. Therein, computational homogenization is first performed on various microstructures before the resulting effective material parameters are used in larger-scale simulation models to investigate their effect and to verify the employed methods.

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Section: Comparison Of Conforming and Mortar-based Fe Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multiscale Analysis of High Damping Composites Using the Finite Cell and the Mortar Method

Paolini

Korshunova

Kollmannsberger

et al. 2021

Int. J. Str. Stab. Dyn.

Self Cite

View full text Add to dashboard Cite

show abstract

“… Horger et al [34] present a Mortar-based approach to model such corners and[59] is presenting the numerical simulation of a timber connection, where the interface itself is enhanced by a material law to represent an elastic material layer.…”

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confidence: 99%

Concepts of data collection for the CAD-integrated isogeometric analysis

Teschemacher

Bauer

Aristio

et al. 2022

Engineering with Computers

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This publication presents required steps for the realization of the pre- and post-processing for the isogeometric analysis and the isogeometric B-Rep analysis, with a focus on the collection of required data. It reveals the essential prerequisites for the preparation and the collection of geometrical information, which are merged with physical information for the creation of numerical models. It addresses both the direct computation on existing CAD drawings and the geometrical design during the preparation of the numerical models. The developments are presented through the example of the open source Rhino plugin Cocodrilo, which shall bring IGA to a larger community, including research and industrial facilities.

show abstract

A mortar formulation including viscoelastic layers for vibration analysis

Cited by 2 publications

References 28 publications

Multiscale Analysis of High Damping Composites Using the Finite Cell and the Mortar Method

Multiscale Analysis of High Damping Composites Using the Finite Cell and the Mortar Method

Concepts of data collection for the CAD-integrated isogeometric analysis

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