This project is to formulate a stochastic finite element procedure to study the static and dynamic behaviors of complex structures, with emphasis on thin shell structural uncertainties under random earthquake load. Structural uncertainties such as initial geometric imperfections, material properties, boundary conditions, and structural damping coefficients, etc. and random loads are considered. The main objectives are: (1) to extend the formulation of an existing curved quadrilateral thin shell element with deterministic imperfections and geometrical and material nonlinearities to include random imperfections and other structural uncertainties; (2) to codify the formulation to study the combined effects of several structural uncertainties on static analysis; (3) to develop a solution procedure within the framework of stochastic finite element approach and equivalent linearization technique, which simultaneously accounts for the effects of several structural uncertainties in spatial domain and temporal random loadings; (4) to study the dynamic response and dynamic buckling behaviors of thin complex structures subjected to earthquake load. The effort will lead to the development of a design methodology reliability analysis of practical complex structures with structural uncertainties subjected to random earthquake load.

Project Start
Project End
Budget Start
1988-11-01
Budget End
1992-10-31
Support Year
Fiscal Year
1988
Total Cost
$126,000
Indirect Cost
Name
Purdue Research Foundation
Department
Type
DUNS #
City
West Lafayette
State
IN
Country
United States
Zip Code
47907