Abstract: The calculation of time‐step sizes to prevent interstep events in multilinear problems is addressed. The treatment is restricted to the Newmark‐Beta family of implicit integration methods. Closed‐form equations in the ...

Abstract: A method to check safety against dynamic instability of two‐dimensional buildings is presented. The method is based on the reduction of the multistory structure into an equivalent single‐degree‐of‐freedom (SDOF) system and ...

Abstract: A technique to localize damage in structures that can be treated as linear in the pre- and postdamage states is presented. Central to the approach is the computation of a set of vectors, designated as damage locating vectors ...

Abstract: When two closely spaced eigenvalues merge the associated eigenvectors can either (1) form a subspace where every vector in the span is an eigenvector or (2) coalesce into a single eigenvector. In the second alternative the ...

Abstract: When the identification of a linear system is carried out without deterministic input information the scaling constants that connect the eigensolution to the matrices of the physical system are not determined. One way to ...

Abstract: Central to the discrete to continuous (d2C) time transfer of state space models is the selection of an intersample parameterization of the input. At present the zero-order hold is widely used but the premise is unnecessarily ...

Abstract: Conditioning difficulties often thwart the characterization of damage by model updating. Methods that can provide information on damage location without explicit selection of free parameters are important for improving the ...

Abstract: Localization of damage from changes in flexibility in structures identified from operational or ambient vibration has long been hindered by the fact that the flexibility cannot be extracted exclusively from output signals. ...