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A platform for research: civil engineering, architecture and urbanism
Web crippling investigations of aluminium lipped channel sections under one-flange loading conditions
https://orcid.org/0000-0002-2993-4902
Abstract Roll-formed aluminium sections have recently been utilised in structural systems as load-bearing members. Commonly used as flexural members, these sections are vulnerable to various buckling instabilities including web crippling failure. The current web crippling design guidelines are imperial in nature and their suitability for newly developed sections may not be accurate and reliable. Therefore, this study aims to investigate the web crippling behaviour of and design considerations for unfastened roll-formed aluminium lipped channel (ALC) sections under one-flange loading conditions. An experimental investigation was conducted for this purpose based on the AISI S909 web crippling test guidelines. Numerical simulations were subsequently conducted to extend the range of geometrical dimensions and aluminium alloy grades. A detailed assessment of the design rules given in the American, Australian, and European specifications was carried out using the acquired experimental and numerical results. Most of these guidelines were found to yield unsafe and unreliable predictions of the ultimate web crippling capacities, and therefore suitable modifications and improvement were proposed. The modified design rules predictions showed a good agreement with both experimental and numerical results. Hence it is recommended to adopt these improved design guidelines in relevant aluminium standards.
Highlights Web crippling investigations of unfastened aluminium lipped channel sections. One-flange loading conditions were considered in the investigations. Current design equations were assessed and their predictions were found unsafe. Improved design rules were proposed based on Australian and European standards.
Web crippling investigations of aluminium lipped channel sections under one-flange loading conditions
https://orcid.org/0000-0002-2993-4902
Abstract Roll-formed aluminium sections have recently been utilised in structural systems as load-bearing members. Commonly used as flexural members, these sections are vulnerable to various buckling instabilities including web crippling failure. The current web crippling design guidelines are imperial in nature and their suitability for newly developed sections may not be accurate and reliable. Therefore, this study aims to investigate the web crippling behaviour of and design considerations for unfastened roll-formed aluminium lipped channel (ALC) sections under one-flange loading conditions. An experimental investigation was conducted for this purpose based on the AISI S909 web crippling test guidelines. Numerical simulations were subsequently conducted to extend the range of geometrical dimensions and aluminium alloy grades. A detailed assessment of the design rules given in the American, Australian, and European specifications was carried out using the acquired experimental and numerical results. Most of these guidelines were found to yield unsafe and unreliable predictions of the ultimate web crippling capacities, and therefore suitable modifications and improvement were proposed. The modified design rules predictions showed a good agreement with both experimental and numerical results. Hence it is recommended to adopt these improved design guidelines in relevant aluminium standards.
Highlights Web crippling investigations of unfastened aluminium lipped channel sections. One-flange loading conditions were considered in the investigations. Current design equations were assessed and their predictions were found unsafe. Improved design rules were proposed based on Australian and European standards.
Web crippling investigations of aluminium lipped channel sections under one-flange loading conditions
https://orcid.org/0000-0002-2993-4902
Abstract Roll-formed aluminium sections have recently been utilised in structural systems as load-bearing members. Commonly used as flexural members, these sections are vulnerable to various buckling instabilities including web crippling failure. The current web crippling design guidelines are imperial in nature and their suitability for newly developed sections may not be accurate and reliable. Therefore, this study aims to investigate the web crippling behaviour of and design considerations for unfastened roll-formed aluminium lipped channel (ALC) sections under one-flange loading conditions. An experimental investigation was conducted for this purpose based on the AISI S909 web crippling test guidelines. Numerical simulations were subsequently conducted to extend the range of geometrical dimensions and aluminium alloy grades. A detailed assessment of the design rules given in the American, Australian, and European specifications was carried out using the acquired experimental and numerical results. Most of these guidelines were found to yield unsafe and unreliable predictions of the ultimate web crippling capacities, and therefore suitable modifications and improvement were proposed. The modified design rules predictions showed a good agreement with both experimental and numerical results. Hence it is recommended to adopt these improved design guidelines in relevant aluminium standards.
Highlights Web crippling investigations of unfastened aluminium lipped channel sections. One-flange loading conditions were considered in the investigations. Current design equations were assessed and their predictions were found unsafe. Improved design rules were proposed based on Australian and European standards.
Web crippling investigations of aluminium lipped channel sections under one-flange loading conditions
Alsanat, Husam (author) / Gunalan, Shanmuganathan (author) / Poologanathan, Keerthan (author) / Guan, Hong (author)
Thin-Walled Structures ; 166
2021-05-30
Article (Journal)
Electronic Resource
English
Web crippling experiments of high strength lipped channel beams under one-flange loading
| British Library Online Contents | 2017
Web crippling experiments of high strength lipped channel beams under one-flange loading
| British Library Online Contents | 2017