CHARACTERISTIC STRENGTHS IN THE COMPRESSION AND IN THE STATIC BENDING AS PARAMETERS TO ESTIMATE CHARACTERISTIC SHEAR STRENGTH FOR TIMBER DESIGN

Authors

  • João Paulo Boff Almeida Instituto Federal de Educação Ciência e Tecnologia do Ceará, Quixadá, CE - Brasil
  • Anderson Renato Vobornik Wolenski Instituto Federal de Santa Catarina, Departamento de Construção Civil, São Carlos, SC - Brasil.
  • Edson Fernando Castanheira Rodrigues Universidade Federal de São Carlos, Programa de Pós-Graduação em Engenharia Civil, São Carlos, SP - Brasil.
  • Victor Almeida de Araujo Universidade Federal de São Carlos, Programa de Pós-Graduação em Engenharia Civil, São Carlos, SP - Brasil.
  • Túlio Hallak Panzera Universidade Federal de São João DEl-Rei, Departamento de Engenharia Mecânica, São João Del-Rei, MG - Brasil.
  • Cristiane Inácio de Campos Universidade Estadual Júlio de Mesquita Filho, Departamento de Ciências e Tecnologia, Itapeva, SP - Brasil
  • Julio Cesar Molina Universidade de São Paulo, Departamento de Engenharia de Estruturas, São Carlos, SP - Brasil.
  • André Luis Christoforo Universidade Federal de São Carlos, Programa de Pós-Graduação em Engenharia Civil, São Carlos, SP - Brasil.
  • Francisco Antonio Rocco Lahr Universidade de São Paulo, Departamento de Engenharia de Estruturas, São Carlos, SP - Brasil.

Keywords:

Brazilian hardwood, characteristic strengths, Shear strength estimates

Abstract

To simplify the characterization of wood species, the Brazilian standard document ABNT NBR 7190-1 (2022) establishes the determination of mechanical properties employing the characteristic strength in the compression parallel to grain (fc0,k). This mechanical property is estimated using the linear relation given by the following expression fv0,k = 0.12·fc0,k Brazilian and European standard documents support the estimation of fv0,k using relations among properties. However, the European guidelines in the EN 384 (2019) have used the conventional characteristic strength in the static bending test (fM,k). Thus, this study aimed to investigate the efficiency of the ratio fv0,k = 0.12·fc0,k for adopting 30 hardwoods. The variance analysis results demonstrate the divergence among the experimental outcomes and those values estimated using the relation cited. Therefore, regression models at two parameters were considered to obtain more accurate estimates of fv0,k by adopting fc0,k, and fM,k as independent variables. Regarding the results, the geometric (R² = 80.80%) and linear (R² = 74.19%) models were the most accurate for the estimates of fv0,k in terms of fc0,k, and fM,k, respectively. This fact evinces the good accuracy of the models under consideration, which may provide a more rigorous structural design compared to the correlation currently prescribed by the ABNT NBR 7190-1 (2022).

Keywords: Brazilian hardwood; characteristic strengths; Shear strength estimates

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Published

2023-06-26

How to Cite

Almeida, J. P. B., Wolenski, A. R. V., Rodrigues, E. F. C., de Araujo, V. A., Panzera, T. H., de Campos, C. I., Molina, J. C., Christoforo, A. L., & Lahr, F. A. R. (2023). CHARACTERISTIC STRENGTHS IN THE COMPRESSION AND IN THE STATIC BENDING AS PARAMETERS TO ESTIMATE CHARACTERISTIC SHEAR STRENGTH FOR TIMBER DESIGN. Revista Árvore, 47, https://doi.org/10.1590/1806–908820230000008. Retrieved from https://revistaarvore.ufv.br/rarv/article/view/263554

Issue

Revista Árvore, Viçosa-MG, v.47, 2023

Section

Wood Technology and Utilization of Forest Products

License

All authors agreed to submit the work to Revista Árvore and granted the exclusive license to publish the article. The authors affirm that it is an original work and has not been previously published elsewhere. The scientific content and opinions expressed in the article are the sole responsibility of the authors and reflect their opinions, not necessarily representing the opinions of the editorial board of Revista Árvore or of the Society of Forest Investigations (SIF).

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