0
research-article

Numerical and Experimental Study of Clearance Nonlinearities Based on Nonlinear Response Reconstruction

[+] Author and Article Information
Jie Liu

State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, 710049, Xi'an, P. R. China
jieliu2013@stu.xjtu.edu.cn

Bing Li

State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, 710049, Xi'an, P. R. China
bli@mail.xjtu.edu.cn

Huihui Miao

State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, 710049, Xi'an, P. R. China
mhh1989@stu.xjtu.edu.cn

Anqi He

State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, 710049, Xi'an, P. R. China
15909293029@163.com

Shangkun Zhu

State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, 710049, Xi'an, P. R. China
zhusk268@163.com

1Corresponding author.

ASME doi:10.1115/1.4037927 History: Received February 27, 2017; Revised August 23, 2017

Abstract

With the growing structural complexity and growing demands on structural reliability, nonlinear parameters identification is an efficient approach to provide better understanding of dynamic behaviors of the nonlinear system and contribute significantly for improving system performance. However, the dynamic response at nonlinear location which cannot always be measured by the sensor is the basis for most of these identification algorithms, and the clearance nonlinearity which always exists to degrade the dynamic performance of mechanical structures is rarely identified in previous studies. In this paper, based on the thought of output feedback which the nonlinear force is viewed as the internal feedback force of the nonlinear system acting on the underlying linear model, a frequency-domain nonlinear response reconstruction method is proposed to reconstruct the dynamic response at the nonlinear location from the arbitrary location where the sensor can be installed. For the clearance nonlinear system, the force graph method which is based on the reconstructed displacement response and nonlinear force is presented to identify the clearance value. The feasibility of the reconstruction method and identification method is verified by simulation data from a cantilever beam model with clearance nonlinearity. A clearance test-bed which is a continuum structure with adjustable clearance nonlinearity is designed to verify effectiveness of proposed methods. The experimental results show that the reconstruction method can precisely reconstruct the displacement response at clearance location from measured responses at reference locations, and based on the reconstructed response, the force graph method can also precisely identify the clearance parameter.

Copyright (c) 2017 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In