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RISExact Sensitivity of Nonlinear Dynamic Response with Modal and Rayleigh Damping Formulated with the Tangent Stiffness
Publisher: ASCE
Abstract: Derivatives of nonlinear dynamic response are calculated in an exact and efficient manner with respect to material, geometry, mass, and damping parameters. Developments are presented for the Rayleigh and modal damping ...
Efficient Computation of Response Sensitivities for Inelastic Structures
Publisher: American Society of Civil Engineers
Abstract: Response sensitivities with respect to the parameters of a finite element model are useful in many applications. The direct differentiation method (DDM) is commonly utilized to obtain such results. In recent years, the DDM ...
Risk Minimization for a Portfolio of Buildings Considering Risk Aversion
Publisher: American Society of Civil Engineers
Abstract: This paper uses probabilistic models and minimization of certain risk measures to expose risk aversion and optimal retrofit strategies for an existing building portfolio. A case study is presented addressing 622 buildings ...
Seismic Loss Estimation Using Visual Damage Models
Publisher: ASCE
Abstract: This paper presents models for visual damage, together with a methodology for seismic loss estimation based on that type of damage prediction. The methodology predicts repair cost, duration, and labor hours. The visual ...
Cost of Environmental and Human Health Impacts of Repairing Earthquake Damage
Publisher: ASCE
Abstract: Extending existing performance-based initiatives, this paper provides a richer understanding of how earthquakes affect the environment and human health. Utilizing a detailed structural model, a host of emissions is predicted. ...
Methods and Object-Oriented Software for FE Reliability and Sensitivity Analysis with Application to a Bridge Structure
Publisher: American Society of Civil Engineers
Abstract: This paper addresses the growing demand for finite-element software with capabilities to incorporate uncertainty in the input parameters. Reliability and response sensitivity algorithms are implemented in the general-purpose ...
Software Framework for Parameter Updating and Finite-Element Response Sensitivity Analysis
Publisher: American Society of Civil Engineers
Abstract: The finite-element software framework OpenSees is extended with parameter updating and response sensitivity capabilities to support client applications such as reliability, optimization, and system identification. Using ...
Parameter Sensitivity and Importance Measures in Nonlinear Finite Element Reliability Analysis
Publisher: American Society of Civil Engineers
Abstract: Finite element reliability methods allow the analyst to define material, load, and geometry parameters as random variables to represent uncertainties in these model parameters. Approximate probabilistic analysis methods ...
Force Transfer around Openings in Cross-Laminated Timber Shear Walls
Publisher: American Society of Civil Engineers
Abstract: This paper presents a study on force transfer around openings (FTAO) in cross-laminated timber (CLT) shear walls. To elucidate the load transfer mechanism in CLT walls, this study used finite-element models to study five ...
Probabilistic Seismic Demand Models and Fragility Estimates for Reinforced Concrete Bridges with Two-Column Bents
Publisher: American Society of Civil Engineers
Abstract: Probabilistic models are developed to predict the deformation and shear demands due to seismic excitation on reinforced concrete (RC) columns in bridges with two-column bents. A Bayesian methodology is used to develop the ...