Title :
Reliability analysis for nonlinear structures
Author :
Gao, Liwei ; Haldar, Achintya
Author_Institution :
Dept. of Civil Eng. & Eng. Mech., Arizona Univ., Tucson, AZ, USA
Abstract :
An efficient stochastic finite element-based procedure is proposed for the reliability analysis of two- or three-dimensional frame structures with linear or geometrical nonlinearity. The method is based on the advanced first order second moment reliability analysis procedure. The assumed stress field approach is used in the finite element formulation to efficiently compute the nonlinear structural response and the corresponding response gradients. The material properties, geometry, and external loads are considered to be random variables. The failure criteria of the structure are expressed in terms of the ultimate and serviceability limit state functions. The proposed method is not only very efficient but has several other advantages
Keywords :
finite element analysis; reliability theory; stochastic processes; structural engineering; structural engineering computing; advanced first order second moment reliability analysis procedure; external loads; failure criteria; frame structures; geometrical nonlinearity; geometry; material properties; nonlinear structural response; reliability analysis; response gradients; serviceability limit state functions; stochastic finite element-based procedure; stress field approach; Civil engineering; Computational efficiency; Context modeling; Costs; Finite element methods; Geometry; Reliability engineering; Stochastic processes; Stress; Vectors;
Conference_Titel :
Uncertainty Modeling and Analysis, 1993. Proceedings., Second International Symposium on
Conference_Location :
College Park, MD
Print_ISBN :
0-8186-3850-8
DOI :
10.1109/ISUMA.1993.366710
