Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lumped Damage Model Applied to Local Buckling in Steel Rectangular Hollow Section Subjected to Compressive Axial Force with Bending Moment
https://orcid.org/http://orcid.org/0000-0002-8128-1718
https://orcid.org/http://orcid.org/0000-0002-5103-5217
https://orcid.org/http://orcid.org/0000-0002-9233-3114
The search to reduce engineering costs leads to the development of new materials and design concepts to obtain lighter and slender structures. Consequently, when using structural parts with cross-sections composed by slender plates, the phenomenon of local instability becomes more evident and is usually treated as a form of collapse. Generally, the behaviour of the structure in terms of local buckling requires refined solutions. Then, it is usual to employ finite element modelling using meshes with several shell or three-dimensional elements, leading to high computational costs. Therefore, this study proposes a numerical model based on Lumped Damage Mechanics (LDM) applied to local buckling in steel rectangular hollow sections subjected to compressive axial force with bending moment. In the LDM, it is assumed that all the nonlinear effects of a finite element are concentrated in plastic hinges, where it significantly reduces the computational cost of the computational analysis. For the proposed formulation, equations based on experiments of other authors were introduced to analytically calculate the model parameters. To evaluate the accuracy of the proposed model, the numerical results were compared to other experiments. Thus, it was concluded that the numerical results were satisfactory, since the numerical curves showed similar behaviour when compared to the experimental ones.
Lumped Damage Model Applied to Local Buckling in Steel Rectangular Hollow Section Subjected to Compressive Axial Force with Bending Moment
https://orcid.org/http://orcid.org/0000-0002-8128-1718
https://orcid.org/http://orcid.org/0000-0002-5103-5217
https://orcid.org/http://orcid.org/0000-0002-9233-3114
The search to reduce engineering costs leads to the development of new materials and design concepts to obtain lighter and slender structures. Consequently, when using structural parts with cross-sections composed by slender plates, the phenomenon of local instability becomes more evident and is usually treated as a form of collapse. Generally, the behaviour of the structure in terms of local buckling requires refined solutions. Then, it is usual to employ finite element modelling using meshes with several shell or three-dimensional elements, leading to high computational costs. Therefore, this study proposes a numerical model based on Lumped Damage Mechanics (LDM) applied to local buckling in steel rectangular hollow sections subjected to compressive axial force with bending moment. In the LDM, it is assumed that all the nonlinear effects of a finite element are concentrated in plastic hinges, where it significantly reduces the computational cost of the computational analysis. For the proposed formulation, equations based on experiments of other authors were introduced to analytically calculate the model parameters. To evaluate the accuracy of the proposed model, the numerical results were compared to other experiments. Thus, it was concluded that the numerical results were satisfactory, since the numerical curves showed similar behaviour when compared to the experimental ones.
Lumped Damage Model Applied to Local Buckling in Steel Rectangular Hollow Section Subjected to Compressive Axial Force with Bending Moment
https://orcid.org/http://orcid.org/0000-0002-8128-1718
https://orcid.org/http://orcid.org/0000-0002-5103-5217
https://orcid.org/http://orcid.org/0000-0002-9233-3114
The search to reduce engineering costs leads to the development of new materials and design concepts to obtain lighter and slender structures. Consequently, when using structural parts with cross-sections composed by slender plates, the phenomenon of local instability becomes more evident and is usually treated as a form of collapse. Generally, the behaviour of the structure in terms of local buckling requires refined solutions. Then, it is usual to employ finite element modelling using meshes with several shell or three-dimensional elements, leading to high computational costs. Therefore, this study proposes a numerical model based on Lumped Damage Mechanics (LDM) applied to local buckling in steel rectangular hollow sections subjected to compressive axial force with bending moment. In the LDM, it is assumed that all the nonlinear effects of a finite element are concentrated in plastic hinges, where it significantly reduces the computational cost of the computational analysis. For the proposed formulation, equations based on experiments of other authors were introduced to analytically calculate the model parameters. To evaluate the accuracy of the proposed model, the numerical results were compared to other experiments. Thus, it was concluded that the numerical results were satisfactory, since the numerical curves showed similar behaviour when compared to the experimental ones.
Lumped Damage Model Applied to Local Buckling in Steel Rectangular Hollow Section Subjected to Compressive Axial Force with Bending Moment
Int J Steel Struct
Silva, Leonardo A. B. (Autor:in) / Argôlo, Higor S. D. (Autor:in) / Amorim, David L. N. F. (Autor:in)
International Journal of Steel Structures ; 22 ; 319-332
01.02.2022
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Seismic Performance of Rectangular Hollow Section X-Joints Subjected to In-Plane Bending Moment
| DOAJ | 2023
Model of local buckling in steel hollow structural elements subjected to biaxial bending
| Online Contents | 2007