Optimization of channels and I-shaped bended closed profiles with perforated walls
The article presents a continuation of the optimization of channel and I-shaped bended closed profiles (BCP) with tubular flanges and perforated walls made of rolled sheet products of both equal and different thicknesses. Such profiles are designed for light steel thin-walled structures (LSWS), whic...
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| Format: | Article |
| Language: | English |
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Peoples’ Friendship University of Russia (RUDN University)
2022-07-01
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| Series: | Structural Mechanics of Engineering Constructions and Buildings |
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| Online Access: | https://journals.rudn.ru/structural-mechanics/article/viewFile/31566/20966 |
| _version_ | 1817969470040178688 |
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| author | Alexander S. Marutyan |
| author_facet | Alexander S. Marutyan |
| author_sort | Alexander S. Marutyan |
| collection | DOAJ |
| description | The article presents a continuation of the optimization of channel and I-shaped bended closed profiles (BCP) with tubular flanges and perforated walls made of rolled sheet products of both equal and different thicknesses. Such profiles are designed for light steel thin-walled structures (LSWS), which are distinguished by improved technical and economic indicators and mass demand in industrial and civil construction, which confirms the relevance of their further development. The purpose of the study is to show that the characteristics of LSWS can be further improved by shaping profiles, combining straight and round outlines of closed and open contours in a composite section, including their perforation. Through experimental design studies, solving optimization problems and variant design of the BCP, their design sections with a maximum margin of bending strength with a minimum mass have been refined. The originality of technical solutions is confirmed by patent examination. The channel BCP has extreme weight and strength with a relative height of cutouts in the wall of 1/1.87 and a ratio of width and height dimensions of 1/4.32. When the thickness of the shelves is 2 times the wall thickness, the strength and mass of the I-shaped BCP are extreme at a relative height of cutouts of 1/1.23 and a ratio of dimensions of 1/4.17, and when the thickness of the shelves is 0.6 of the wall thickness, the strength and mass of the BCP are extreme with a cutout height of 1/1.73 and a size ratio of 1/5.22. If the thicknesses of the shelves and the wall are equal, then the strength and mass of the BCP is extreme at a cutout height of 1/1.46 and a size ratio of 1/3.17. |
| first_indexed | 2024-04-13T20:21:35Z |
| format | Article |
| id | doaj.art-04540d1853d347b7a1eb1d14634c1b1b |
| institution | Directory Open Access Journal |
| issn | 1815-5235 2587-8700 |
| language | English |
| last_indexed | 2024-04-13T20:21:35Z |
| publishDate | 2022-07-01 |
| publisher | Peoples’ Friendship University of Russia (RUDN University) |
| record_format | Article |
| series | Structural Mechanics of Engineering Constructions and Buildings |
| spelling | doaj.art-04540d1853d347b7a1eb1d14634c1b1b2022-12-22T02:31:31ZengPeoples’ Friendship University of Russia (RUDN University)Structural Mechanics of Engineering Constructions and Buildings1815-52352587-87002022-07-0118211113910.22363/1815-5235-2022-18-2-111-13920928Optimization of channels and I-shaped bended closed profiles with perforated wallsAlexander S. Marutyan0https://orcid.org/0000-0001-5464-5929Pyatigorsk Institute (branch) of the North Caucasus Federal UniversityThe article presents a continuation of the optimization of channel and I-shaped bended closed profiles (BCP) with tubular flanges and perforated walls made of rolled sheet products of both equal and different thicknesses. Such profiles are designed for light steel thin-walled structures (LSWS), which are distinguished by improved technical and economic indicators and mass demand in industrial and civil construction, which confirms the relevance of their further development. The purpose of the study is to show that the characteristics of LSWS can be further improved by shaping profiles, combining straight and round outlines of closed and open contours in a composite section, including their perforation. Through experimental design studies, solving optimization problems and variant design of the BCP, their design sections with a maximum margin of bending strength with a minimum mass have been refined. The originality of technical solutions is confirmed by patent examination. The channel BCP has extreme weight and strength with a relative height of cutouts in the wall of 1/1.87 and a ratio of width and height dimensions of 1/4.32. When the thickness of the shelves is 2 times the wall thickness, the strength and mass of the I-shaped BCP are extreme at a relative height of cutouts of 1/1.23 and a ratio of dimensions of 1/4.17, and when the thickness of the shelves is 0.6 of the wall thickness, the strength and mass of the BCP are extreme with a cutout height of 1/1.73 and a size ratio of 1/5.22. If the thicknesses of the shelves and the wall are equal, then the strength and mass of the BCP is extreme at a cutout height of 1/1.46 and a size ratio of 1/3.17.https://journals.rudn.ru/structural-mechanics/article/viewFile/31566/20966rod structuresthin-walled structuresbent-closed profilesperforated wallstoothed fastenersoptimization of cross sectionscalculation of optimal parameters |
| spellingShingle | Alexander S. Marutyan Optimization of channels and I-shaped bended closed profiles with perforated walls Structural Mechanics of Engineering Constructions and Buildings rod structures thin-walled structures bent-closed profiles perforated walls toothed fasteners optimization of cross sections calculation of optimal parameters |
| title | Optimization of channels and I-shaped bended closed profiles with perforated walls |
| title_full | Optimization of channels and I-shaped bended closed profiles with perforated walls |
| title_fullStr | Optimization of channels and I-shaped bended closed profiles with perforated walls |
| title_full_unstemmed | Optimization of channels and I-shaped bended closed profiles with perforated walls |
| title_short | Optimization of channels and I-shaped bended closed profiles with perforated walls |
| title_sort | optimization of channels and i shaped bended closed profiles with perforated walls |
| topic | rod structures thin-walled structures bent-closed profiles perforated walls toothed fasteners optimization of cross sections calculation of optimal parameters |
| url | https://journals.rudn.ru/structural-mechanics/article/viewFile/31566/20966 |
| work_keys_str_mv | AT alexandersmarutyan optimizationofchannelsandishapedbendedclosedprofileswithperforatedwalls |