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Numerical Investigation of Cold-Rolled Aluminium Alloy Stub Columns with Perforations Undergoing Local Buckling
https://orcid.org/http://orcid.org/0000-0002-5552-9716
The paper presents a numerical investigation on cold-rolled perforated aluminium alloy stub columns undergoing local buckling. Calibrated models in previous studies are utilised for the development of the finite element simulation in this investigation. A sensitive study is carried out to consider the impacts of geometric imperfections on the behaviour and strength of cold-rolled aluminium alloy stub columns, this allows the selection of detrimental imperfection shape mode for further investigation. A parametric study is developed based on the detrimental imperfection model to investigate the behaviour and strength of cold-rolled aluminium alloy with perforations. The investigated sections are taken from the commercial channel sections. One square hole at the centre of the web of channel section is considered with various hole sizes. The presence of holes is not considered in the current aluminium design standards, whereas they are accounted for in the design of the American Specification AISI S100-16 for cold-formed steel sections. The obtained strengths from the parametric study, therefore, are compared with the nominal capacities of stub columns with perforations predicted by the American Specification AISI S100-16. The comparisons are also carried out using reliability analyses according to the American Aluminum Specification to evaluate the Direct Strength Method (DSM) of cold-formed steel sections in the design of cold-rolled aluminium alloy stub columns. It is found that the design guidelines of the DSM method for cold-formed steel sections provide quite good predictions for cold-rolled aluminium alloy stub columns with intermediate hole sizes, but they are not proper for the investigated columns with small or large hole sizes. Recommendations for the design of cold-rolled aluminium alloy stub columns with perforations are provided regarding the variety of hole sizes.
Numerical Investigation of Cold-Rolled Aluminium Alloy Stub Columns with Perforations Undergoing Local Buckling
https://orcid.org/http://orcid.org/0000-0002-5552-9716
The paper presents a numerical investigation on cold-rolled perforated aluminium alloy stub columns undergoing local buckling. Calibrated models in previous studies are utilised for the development of the finite element simulation in this investigation. A sensitive study is carried out to consider the impacts of geometric imperfections on the behaviour and strength of cold-rolled aluminium alloy stub columns, this allows the selection of detrimental imperfection shape mode for further investigation. A parametric study is developed based on the detrimental imperfection model to investigate the behaviour and strength of cold-rolled aluminium alloy with perforations. The investigated sections are taken from the commercial channel sections. One square hole at the centre of the web of channel section is considered with various hole sizes. The presence of holes is not considered in the current aluminium design standards, whereas they are accounted for in the design of the American Specification AISI S100-16 for cold-formed steel sections. The obtained strengths from the parametric study, therefore, are compared with the nominal capacities of stub columns with perforations predicted by the American Specification AISI S100-16. The comparisons are also carried out using reliability analyses according to the American Aluminum Specification to evaluate the Direct Strength Method (DSM) of cold-formed steel sections in the design of cold-rolled aluminium alloy stub columns. It is found that the design guidelines of the DSM method for cold-formed steel sections provide quite good predictions for cold-rolled aluminium alloy stub columns with intermediate hole sizes, but they are not proper for the investigated columns with small or large hole sizes. Recommendations for the design of cold-rolled aluminium alloy stub columns with perforations are provided regarding the variety of hole sizes.
Numerical Investigation of Cold-Rolled Aluminium Alloy Stub Columns with Perforations Undergoing Local Buckling
https://orcid.org/http://orcid.org/0000-0002-5552-9716
The paper presents a numerical investigation on cold-rolled perforated aluminium alloy stub columns undergoing local buckling. Calibrated models in previous studies are utilised for the development of the finite element simulation in this investigation. A sensitive study is carried out to consider the impacts of geometric imperfections on the behaviour and strength of cold-rolled aluminium alloy stub columns, this allows the selection of detrimental imperfection shape mode for further investigation. A parametric study is developed based on the detrimental imperfection model to investigate the behaviour and strength of cold-rolled aluminium alloy with perforations. The investigated sections are taken from the commercial channel sections. One square hole at the centre of the web of channel section is considered with various hole sizes. The presence of holes is not considered in the current aluminium design standards, whereas they are accounted for in the design of the American Specification AISI S100-16 for cold-formed steel sections. The obtained strengths from the parametric study, therefore, are compared with the nominal capacities of stub columns with perforations predicted by the American Specification AISI S100-16. The comparisons are also carried out using reliability analyses according to the American Aluminum Specification to evaluate the Direct Strength Method (DSM) of cold-formed steel sections in the design of cold-rolled aluminium alloy stub columns. It is found that the design guidelines of the DSM method for cold-formed steel sections provide quite good predictions for cold-rolled aluminium alloy stub columns with intermediate hole sizes, but they are not proper for the investigated columns with small or large hole sizes. Recommendations for the design of cold-rolled aluminium alloy stub columns with perforations are provided regarding the variety of hole sizes.
Numerical Investigation of Cold-Rolled Aluminium Alloy Stub Columns with Perforations Undergoing Local Buckling
Iran J Sci Technol Trans Civ Eng
Pham, Ngoc Hieu (author)
2023-12-01
11 pages
Article (Journal)
Electronic Resource
English
Numerical Simulation of Cold-Rolled Aluminium Alloy 5052 Columns Subjected to Distortional Buckling
| Springer Verlag | 2019