Paper Titles

Preface and Committees

Statistical Consideration of Uncertainties in Bolted Joints of the Drive Train of Sheet-Fed Offset Printing Presses
p.3

Localized Discrete Modelling of Contact Interfaces to Predict the Dynamic Behaviour of Assembled Structures under Random Excitation
p.13

Variability in Composite Materials Properties
p.23

Fluid-Structure Interaction Simulation of an Aortic Phantom with Uncertain Young's Modulus Using the Polynomial Chaos Expansion
p.34

Investigation of Uncertainty Sources of Piezoresistive Silicon Based Stress Sensor
p.45

Comparison of a New Passive and Active Technology for Vibration Reduction of a Vehicle under Uncertain Load
p.57

Model Verification and Validation of a Piezo-Elastic Support for Passive and Active Structural State Control of Beams with Circular Cross-Section
p.67

Opportunities and Limitations of Structural Intensity Calculation Regarding Uncertainties in the NVH Design of Complex Vehicle Body Structures
p.78

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 807Localized Discrete Modelling of Contact Interfaces...

Localized Discrete Modelling of Contact Interfaces to Predict the Dynamic Behaviour of Assembled Structures under Random Excitation

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Abstract:

Joints used to fasten different parts are the source of local non-linearity with predominance of contact damping in comparison to inherent material damping. The conventional numerical models can predict the dynamic behaviour to a good accuracy, but their implementation for the large system under real time dynamic excitations - like random vibration are encountered with problems of numerical convergence and high computational cost. This paper proposes an approach to model the contact interfaces using discrete elements, with a non-homogeneous definition for the equivalent contact stiffness and damping over the contact interface. The non-homogeneous definition captures the non-linear effects and the local linearisation provides the capability to perform the frequency domain analysis for non-deterministic excitations. The proposed model is validated with experimental results for a test structure excited with random white noise base excitation.

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Periodical:

Applied Mechanics and Materials (Volume 807)

Pages:

13-22

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.807.13

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Online since:

November 2015

Authors:

Anuj Sharma*, Wolfgang Mueller-Hirsch, Sven Herold, Tobias Melz

Keywords:

Contact Damping, Contact Stiffness, Random Vibrations

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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