Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Improved Bouc-Wen Model Implementation in OpenSees
https://orcid.org/http://orcid.org/0000-0001-6645-3633
The current implementation of the Bouc-Wen model in OpenSees exhibits unstable behavior for certain parameter values. In particular for values of the exponent n lower than one. Such values are used, for example, to describe the materials that exhibit a nonlinear behavior even at small strain values, for example soil [6]. In this paper an implementation in OpenSees of a numerical algorithm for determining the ordinary differential equation internal to the Bouc-Wen model to account for this unstable behavior is proposed. In particular, a search interval reduction procedure, based on the bisection and false position method, is described. The Bouc-Wen constitutive law, modified by Gerolymos and Gazetas to account for soil degradation [5], was also implemented in OpenSees and the same solution scheme is used to avoid numerical instabilities. This model is used in a one-dimensional site-response analysis and in the dynamic seismic response evaluation for integral abutment bridges.
Improved Bouc-Wen Model Implementation in OpenSees
https://orcid.org/http://orcid.org/0000-0001-6645-3633
The current implementation of the Bouc-Wen model in OpenSees exhibits unstable behavior for certain parameter values. In particular for values of the exponent n lower than one. Such values are used, for example, to describe the materials that exhibit a nonlinear behavior even at small strain values, for example soil [6]. In this paper an implementation in OpenSees of a numerical algorithm for determining the ordinary differential equation internal to the Bouc-Wen model to account for this unstable behavior is proposed. In particular, a search interval reduction procedure, based on the bisection and false position method, is described. The Bouc-Wen constitutive law, modified by Gerolymos and Gazetas to account for soil degradation [5], was also implemented in OpenSees and the same solution scheme is used to avoid numerical instabilities. This model is used in a one-dimensional site-response analysis and in the dynamic seismic response evaluation for integral abutment bridges.
Improved Bouc-Wen Model Implementation in OpenSees
https://orcid.org/http://orcid.org/0000-0001-6645-3633
The current implementation of the Bouc-Wen model in OpenSees exhibits unstable behavior for certain parameter values. In particular for values of the exponent n lower than one. Such values are used, for example, to describe the materials that exhibit a nonlinear behavior even at small strain values, for example soil [6]. In this paper an implementation in OpenSees of a numerical algorithm for determining the ordinary differential equation internal to the Bouc-Wen model to account for this unstable behavior is proposed. In particular, a search interval reduction procedure, based on the bisection and false position method, is described. The Bouc-Wen constitutive law, modified by Gerolymos and Gazetas to account for soil degradation [5], was also implemented in OpenSees and the same solution scheme is used to avoid numerical instabilities. This model is used in a one-dimensional site-response analysis and in the dynamic seismic response evaluation for integral abutment bridges.
Improved Bouc-Wen Model Implementation in OpenSees
Lecture Notes in Civil Engineering
Di Trapani, Fabio (Herausgeber:in) / Demartino, Cristoforo (Herausgeber:in) / Marano, Giuseppe Carlo (Herausgeber:in) / Monti, Giorgio (Herausgeber:in) / Marchi, Andrea (Autor:in)
Eurasian Conference on OpenSees ; 2022 ; Turin, Italy
20.04.2023
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Earthquake engineering , constitutive law , numerical methods , ordinary differential equation , site-response analysis , soil modeling , hysteresis Engineering , Geoengineering, Foundations, Hydraulics , Geotechnical Engineering & Applied Earth Sciences , Natural Hazards , Building Construction and Design
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