UNCERTAINTY IN ANALYTICAL STRUCTURAL RESPONSE ASSOCIATED WITH HIGH LEVEL MODELING DECISIONS
Current performance based design approach requires an improved understanding of the behavior of structural components which can be realized through nonlinear analysis of structures and structural components. A lot of research exists in characterizing the epistemic uncertainty associated with demand and capacity of a structure or a structural component. However very few researches exist on characterizing the epistemic uncertainty associated with high level analytical modeling decisions for simulation of a structure. In this research, epistemic uncertainty in structural response of reinforced concrete structural system has been investigated through a nonlinear pushover analysis of a reinforced concrete column. While performing nonlinear analysis of the structural component with a particular analytical model, the analyst is required to make certain high level decisions such as with respect to element type, integration rules and material models, to obtain the response of a structural component subjected to a certain kind of loading. The research highlights the loss of objectivity in response associated with high level modeling decisions by an analyst.
Nonlinear finite element component level modeling uncertainty analysis fiber beam column element RC columns.
N. Mitra
Lecturer, Dept. of Civil and Environmental Eng., CalPoly State University, San Luis Obispo, California, USA
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）