Johnny Soares de Carvalho, André Luis Christoforo, Francisco Antonio Rocco Lahr

Fatigue in Wood Members for Structural Purpose

• Broschiertes Buch

Produktbeschreibung

The purpose of present study was to create a theoretical model that allowed with security and reliability to obtain, values of strength and stiffness to which the structural element will be submitted throughout its useful life. The effect was studied for strength and stiffness properties, and the modulus of elasticity (EM) and bending strength (fM) were evaluated according to the increasing number of cycles of the fatigue test for the five classes of hardwoods, recommended by NBR 7190 (1997). These results allowed to construct a fatigue curve, relating the two variables as a function of the number of cycles (Nc) - construction of the curves EM x Nc and fM x Nc. The fatigue effect was present and pronounced in all strength classes. A reduction in strength and stiffness properties was observed with increasing loading Nc applied at all frequencies. From the multivariate regression models and the respective determination coefficients, a generic model was obtained for the set involving the five wood species, emphasizing the insertion of the apparent density as an independent variable, which allowed a greater generalization of the use of the adjustments in the estimation of properties.

Produktdetails

• Verlag: LAP Lambert Academic Publishing
• Seitenzahl: 68
• Erscheinungstermin: 24. Mai 2018
• Englisch
• Abmessung: 220mm x 150mm x 5mm
• Gewicht: 119g
• ISBN-13: 9786139838783
• ISBN-10: 6139838789
• Artikelnr.: 53029455

Autorenporträt

Johnny Soares de Carvalho : Ingénieur civil et titulaire d'une maîtrise en ingénierie structurelle de l'USP et d'un doctorat en ingénierie structurelle de l'UFSCar. André Luis Christoforo : Ingénieur civil (UNIFRAN), master, doctorat et postdoctorat de l'USP et professeur à l'UFSCar. Francisco Antonio Rocco : Ingénieur civil et professeur titulaire à l'USP.