COMPARATIVE ANALYSIS OF THE MECHANICAL PERFORMANCE OF TIMBER TRUSSES STRUCTURAL TYPOLOGIES APPLYING COMPUTATIONAL INTELLIGENCE
ABSTRACT Timber application is viable in constructive systems because of its mechanical properties, suitable for structural applications in engineering. Timber is even more interesting to use since it is a renewable source. Among its several applications, timber is widely used in roofing structures,...
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| Format: | Article |
| Language: | English |
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Sociedade de Investigações Florestais
2022-01-01
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| Series: | Revista Árvore |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622022000100204&tlng=en |
| _version_ | 1818977549717340160 |
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| author | Matheus Henrique Morato Moraes Iuri Fazolin Fraga Wanderlei Malaquias Pereira Junior André Luis Christoforo |
| author_facet | Matheus Henrique Morato Moraes Iuri Fazolin Fraga Wanderlei Malaquias Pereira Junior André Luis Christoforo |
| author_sort | Matheus Henrique Morato Moraes |
| collection | DOAJ |
| description | ABSTRACT Timber application is viable in constructive systems because of its mechanical properties, suitable for structural applications in engineering. Timber is even more interesting to use since it is a renewable source. Among its several applications, timber is widely used in roofing structures, with several typologies of trusses. Therefore, it is necessary to understand the behavior of plane truss in different loading conditions, including dead load, service load, and wind suction load. The mechanical performance of two trusses (Pratt and Scissor) was analyzed and compared, according to the Brazilian standard of timber structures ABNT NBR 7190 (1997) (methods and calculus premises), with the finite element method, an algorithm of swarm intelligence optimization (structure weight minimization), and a parametric study. Based on minimum weight and maximum displacement as a function of span variation, Pratt typology presented lower weight (3–19%) when compared with Scissor, under the same span and loading conditions. Regarding maximum displacements, Pratt typology presented lower displacement values than the Scissor typology. The difference between these values ranged from two to seven times, indicating that Scissor typology can better distribute normal loads (maximum displacement closer to the normative limit displacement). Variance analysis (5% of significance) confirmed these results. |
| first_indexed | 2024-12-20T16:29:31Z |
| format | Article |
| id | doaj.art-a2c5b9410e85473baa2e22a95ec94840 |
| institution | Directory Open Access Journal |
| issn | 1806-9088 |
| language | English |
| last_indexed | 2024-12-20T16:29:31Z |
| publishDate | 2022-01-01 |
| publisher | Sociedade de Investigações Florestais |
| record_format | Article |
| series | Revista Árvore |
| spelling | doaj.art-a2c5b9410e85473baa2e22a95ec948402022-12-21T19:33:17ZengSociedade de Investigações FlorestaisRevista Árvore1806-90882022-01-014610.1590/1806-908820220000004COMPARATIVE ANALYSIS OF THE MECHANICAL PERFORMANCE OF TIMBER TRUSSES STRUCTURAL TYPOLOGIES APPLYING COMPUTATIONAL INTELLIGENCEMatheus Henrique Morato Moraeshttps://orcid.org/0000-0002-7285-1344Iuri Fazolin Fragahttps://orcid.org/0000-0003-0310-0237Wanderlei Malaquias Pereira Juniorhttps://orcid.org/0000-0002-7404-3666André Luis Christoforohttps://orcid.org/0000-0002-4066-080XABSTRACT Timber application is viable in constructive systems because of its mechanical properties, suitable for structural applications in engineering. Timber is even more interesting to use since it is a renewable source. Among its several applications, timber is widely used in roofing structures, with several typologies of trusses. Therefore, it is necessary to understand the behavior of plane truss in different loading conditions, including dead load, service load, and wind suction load. The mechanical performance of two trusses (Pratt and Scissor) was analyzed and compared, according to the Brazilian standard of timber structures ABNT NBR 7190 (1997) (methods and calculus premises), with the finite element method, an algorithm of swarm intelligence optimization (structure weight minimization), and a parametric study. Based on minimum weight and maximum displacement as a function of span variation, Pratt typology presented lower weight (3–19%) when compared with Scissor, under the same span and loading conditions. Regarding maximum displacements, Pratt typology presented lower displacement values than the Scissor typology. The difference between these values ranged from two to seven times, indicating that Scissor typology can better distribute normal loads (maximum displacement closer to the normative limit displacement). Variance analysis (5% of significance) confirmed these results.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622022000100204&tlng=enPrattScissorOptimization |
| spellingShingle | Matheus Henrique Morato Moraes Iuri Fazolin Fraga Wanderlei Malaquias Pereira Junior André Luis Christoforo COMPARATIVE ANALYSIS OF THE MECHANICAL PERFORMANCE OF TIMBER TRUSSES STRUCTURAL TYPOLOGIES APPLYING COMPUTATIONAL INTELLIGENCE Revista Árvore Pratt Scissor Optimization |
| title | COMPARATIVE ANALYSIS OF THE MECHANICAL PERFORMANCE OF TIMBER TRUSSES STRUCTURAL TYPOLOGIES APPLYING COMPUTATIONAL INTELLIGENCE |
| title_full | COMPARATIVE ANALYSIS OF THE MECHANICAL PERFORMANCE OF TIMBER TRUSSES STRUCTURAL TYPOLOGIES APPLYING COMPUTATIONAL INTELLIGENCE |
| title_fullStr | COMPARATIVE ANALYSIS OF THE MECHANICAL PERFORMANCE OF TIMBER TRUSSES STRUCTURAL TYPOLOGIES APPLYING COMPUTATIONAL INTELLIGENCE |
| title_full_unstemmed | COMPARATIVE ANALYSIS OF THE MECHANICAL PERFORMANCE OF TIMBER TRUSSES STRUCTURAL TYPOLOGIES APPLYING COMPUTATIONAL INTELLIGENCE |
| title_short | COMPARATIVE ANALYSIS OF THE MECHANICAL PERFORMANCE OF TIMBER TRUSSES STRUCTURAL TYPOLOGIES APPLYING COMPUTATIONAL INTELLIGENCE |
| title_sort | comparative analysis of the mechanical performance of timber trusses structural typologies applying computational intelligence |
| topic | Pratt Scissor Optimization |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622022000100204&tlng=en |
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