Dynamic Response Analysis of Fuzzy Stochastic Truss Structures under Fuzzy Stochastic Excitation

2006 ◽  
Vol 38 (3) ◽  
pp. 283-292 ◽  
Author(s):  
Juan Ma ◽  
Jian-jun Chen ◽  
Wei Gao
Keyword(s):  
Dynamic Response ◽  
Truss Structures ◽  
Response Analysis ◽  
Stochastic Excitation ◽  
Dynamic Response Analysis

Interval dynamic response analysis of structures with interval parameters

2008 ◽  
Vol 222 (3) ◽  
pp. 377-385 ◽  
Author(s):  
W Gao ◽  
N Zhang ◽  
J Ma ◽  
X B Wang
Keyword(s):  
Dynamic Response ◽  
Structural Parameters ◽  
Dynamic Responses ◽  
Truss Structures ◽  
Response Analysis ◽  
Superposition Method ◽  
Structural Dynamic ◽  
Dynamic Response Analysis ◽  
Interval Parameters ◽  
Mode Superposition Method

Dynamic response analysis of truss structures with interval parameters under interval loads are investigated using a new method called the interval factor method (IFM). Using the IFM, the structural physical parameters, geometric dimensions, and loads can be considered as interval variables. The structural stiffness and mass matrices can then, respectively, be described by the product of two parts corresponding to the deterministic matrix and the interval factors of structural parameters. The computational expressions for the midpoint value, lower and upper bounds of the structural dynamic responses are derived by means of the mode superposition method and interval operations. The influences of the uncertainty of the structural parameters and loads on the structural dynamic responses are demonstrated by using truss structures.

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