COMPARISON BETWEEN TSAI-WU FAILURE CRITERION AND HANKINSON'S FORMULA FOR TENSION IN WOOD

Autor(es)

Mascia, Nilson Tadeu ^[1] ; Nicolas, Elias Antonio ^[1] ; Todeschini, Rodrigo ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Fac Civil Engn Architecture & Urbanism, Cammpinas, SP - Brazil

^[2] Engn Ieabast Ieacap Cmai Petrobas, Capuava Maua, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: WOOD RESEARCH; v. 56, n. 4, p. 499-510, 2011.
• Citações Web of Science: 0

Resumo

For wood a material with anisotropic characteristics and strength asymmetry, Hankinson's formula was the first successful expression to predict the strength in non-parallel orientation to the grains. However, with the emergence of new materials, with directional properties, there was a need to formulate broader failure criteria. One of these criterions is Tsai-Wu's general failure theory for anisotropic materials. This research seeks to investigate the use of this failure criterion for wood, considering its directional properties. The failure parameters of Tsai-Wu criterion were determined from uniaxial tension and compression in specimens of the wood species Goupia Glabra, at inclined directions with respect to the fibers (15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees), shear and biaxial compression test. The estimates of Tsai-Wu criterion are compared to the values from Hankinson's formula. The results were in general appropriate and thus reveal an interesting way to be followed for future research. (AU)

• Processo FAPESP: 04/15481-5 - Critérios de resistência de materiais anisotrópicos aplicados à madeira
• Beneficiário: Nilson Tadeu Mascia
• Linha de fomento: Auxílio à Pesquisa - Regular