An overview of each method is as follows: A few of the traditional analysis methods, and the relations between their attributes, are presented in Figure 1:Įach of these analysis methods has benefits and limitations. Linear and nonlinear methods may be static or dynamic. If only elastic material behavior is considered, linear analysis methods should suffice, though P-Delta formulation may still be applied. Nonlinear analysis methods are best applied when either geometric or material nonlinearity is considered during structural modeling and analysis. Material nonlinearity concerns inelastic structural response in which the behavior of a component, system, or connection deviates from the initial stiffness tangent characteristic of linear-elastic behavior. Geometric nonlinearity concerns the P-Delta effects associated with application of external loading upon the displaced configuration of a structure.Nonlinear structural behavior may be associated with either geometric or material response, each described as follows:
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