Dynamic Characteristics Analysis for Intelligent Truss Structure s with Random Parameters
Gao Wei, Chen Jianjun, Liu Wei, Ma Hongbo, Cui Mingtao
(School of Electronic Mechanical Engineering, Xidian University, Xi'an 710071)

Abstract: The problem of dynamic analysis based on probability for the intelligent truss structures with random parameters are studied in this paper. Considering the randomness of both elastic module and mass density of piezoelectric active bars and passive bars, the element's and structural stiff and mass matrix have been built, the structure dynamic characteristics is analyzed based on probability, and the numerical characteristics of natural frequency random variable is derived from the Rayleigh's quotient. Finally, two examples are given, and some conclusions are obtained. 
Keywords: piezoelectric intelligent truss structures, physical parameters, random variables, dynamic characteristics analysis.