A high-accuracy model reduction for analysis of nonlinear vibrations in structures with contact interfaces

Petrov, E P (2011) A high-accuracy model reduction for analysis of nonlinear vibrations in structures with contact interfaces. Journal of Engineering for Gas Turbines and Power, 133 (10). 102503/1-102503/10. ISSN 0742-4795

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Abstract

A highly accurate and computationally efficient method is proposed for reduced modeling of jointed structures in the frequency domain analysis of nonlinear steady-state forced response. The method has significant advantages comparing with the popular variety of mode synthesis methods or forced response matrix methods and can be easily implemented in the nonlinear forced response analysis using standard finite element codes. The superior qualities of the new method are demonstrated on a set of major problems of nonlinear forced response analysis of bladed disks with contact interfaces: (i) at blade roots, (ii) between interlock shrouds, and (iii) at underplatform dampers. The numerical properties of the method are thoroughly studied on a number of special test cases.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Yevgen Petrov
Date Deposited: 06 Feb 2012 18:11
Last Modified: 13 Mar 2017 11:17
URI: http://sro.sussex.ac.uk/id/eprint/15127

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