An Adaptive Section Discretization Scheme for the Nonlinear Dynamic Analysis of Steel Frames
Publication: Journal of Structural Engineering
Volume 149, Issue 4
Abstract
The paper presents an adaptive section discretization scheme for the inelastic response analysis of structural members with cross sections that can be decomposed into rectangular and circular subdomains. Each subdomain can consist of a different material. As long as the largest strain in a subdomain does not exceed the specified trigger strain values, the subdomain contribution to the section response is determined by the numerically exact cubature rule for the subdomain. Once the largest strain reaches the trigger value for a subdomain, it is discretized with a fiber mesh and the numerical evaluation of its contribution to the section response is determined with the midpoint integration rule. The fiber mesh with the midpoint integration rule remains in effect for the activated subdomain until the end of the response history. The paper applies the adaptive discretization scheme to the thin-walled sections common in metallic structures and investigates the effect of different trigger strain values on the accuracy and computational efficiency of the inelastic response analysis of wide-flange steel sections and multistory steel frames under static and dynamic excitations.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The first author thanks the Ministry of Science of the Republic of Serbia for financial support under the Project No. 2000092.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 149 • Issue 4 • April 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Jun 20, 2022
Accepted: Nov 22, 2022
Published online: Jan 30, 2023
Published in print: Apr 1, 2023
Discussion open until: Jun 30, 2023
ASCE Technical Topics:
- Adaptive systems
- Dynamic structural analysis
- Elasticity and Inelasticity
- Engineering fundamentals
- Frames
- Material mechanics
- Material properties
- Materials engineering
- Mechanical properties
- Methodology (by type)
- Numerical methods
- Steel frames
- Steel structures
- Strain
- Structural analysis
- Structural engineering
- Structural members
- Structural systems
- Structures (by type)
- Systems engineering
- Systems management
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