Techno Press
You logged in as Techno Press

Structural Engineering and Mechanics
  Volume 10, Number 4, October 2000 , pages 359-369
DOI: https://doi.org/10.12989/sem.2000.10.4.359
 


Random loading identification of multi-input-multi-output structure
Zhi H, Lin JH

 
Abstract
    Random loading identification has long been a difficult problem for Multi-Input-Multi-Output (MIMO) structure. In this paper, the Pseudo Excitation Method (PEM), which is an exact and efficient method for computing the structural random response, is extended inversely to identify the excitation power spectral densities (PSD). This identified method, named the Inverse Pseudo Excitation Method (IPEM), resembles the general dynamic loading identification in the frequency domain, and can be used to identify the definite or random excitations of complex structures in a similar way. Numerical simulations are used to reveal the the difficulties in such problems, and the results of some numerical analysis are discussed, which may be very useful in the setting up and processing of experimental data so as to obtain reasonable predictions of the input loading from the selected structural responses.
 
Key Words
    random, loading, identification, simulation, vibration
 
Address
Zhi H, No Jiaotong Univ, Dept Mech Engn, Beijing 100044, Peoples R China
No Jiaotong Univ, Dept Mech Engn, Beijing 100044, Peoples R China
Dalian Univ Technol, Dept Mech, Dalian 116032, Peoples R China
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2024 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: info@techno-press.com