Specifications

Riparian zones - Sediment transport model - Total nitrogen - Total phosphorus -
Vegetated filter strips - Vegetative filter strips
Classification code: 453 Water Pollution - 453.2 Water Pollution Control - 481.1 Geology
- 631.3 Flow of Fluid-Like Materials - 723.5 Computer Applications - 921 Mathematics
Database: Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.
22.
Accession number: 20131016086605
Title: Dynamic modeling and analysis of an elastic mechanism with a nonlinear damping model
Authors: Yuan, Da-Ning1/原大宁
Author affiliation: 1 Mechanical and Precision Instrument Engineering Department, Xi'An
University of Technology, Xi'an, China
Corresponding author: Yuan, D.-N. ([e-mail])
Source title: JVC/Journal of Vibration and Control
Abbreviated source title: JVC/J Vib Control
Volume: 19
Issue: 4
Issue date: March 2013
Publication year: 2013
Pages: 508-516
Language: English
ISSN: 10775463
E-ISSN: 17412986
CODEN: JVCOFX
Document type: Journal article (JA)
Publisher: SAGE Publications Inc., 2455 Teller Road, Thousand Oaks, CA 91320, United States
Abstract: Dynamic modeling and simulation of a mechanical system with nonlinear
strain-frequency-dependent damping are carried out in this paper. First, methods of nonlinear
strain-frequency-dependent damping are described, which extracts nonlinear damping
information of a damping alloy specimen from the free decay signal by means of the moving
autoregressive model method. Second, the viscoelastic theory is introduced to describe the
strain-frequency-dependent characteristics of damping more accurately, a viscoelastic three
parameter structural damping constitution model is developed whose parameters are identified
from the test data by means of an optimization algorithm. The finite element dynamic equations
for strain-frequency-dependent damping are derived through the established three parameters
constitution. Thirdly, the established element dynamic equations are assembled into the system
dynamic equations of an elastic linkage mechanism by means of the kineto-elastodynamic theory,
and a closed-form numerical algorithm is constructed in order to solve the high-order differential
equations with time-varying coefficients. Lastly, a dynamic simulation example of a four-bar
elastic linkage mechanism with damping alloy components is given. It is shown that the elastic
vibration can be significantly reduced with the components replaced by damping alloy parts. ©
2012 The Author(s).
Number of references: 19
Main heading: Damping