Determination of the longitudinal modulus of elasticity in structural sawn wooden beams by the least squares method
DOI:
https://doi.org/10.5935/1809-2667.20120032Keywords:
Sawn wood, Modulus of elasticity, Least Squares MethodAbstract
This paper proposes an alternative method of calculation based on the Least Squares Method to determine the longitudinal modulus of elasticity in structural-sized wooden beams. The developed equations require knowledge of three points of displacements, allowing greater reliability on the dependent variable when using the static four-point bending test. Using the Jatobá (Hymenaea sp) wood in the study, the methodology proposed here was used in combination with a simplified one, requiring knowledge of displacement only at the midpoint of the beam in order to compare the results among them. Results show statistical equivalence between the models, indicating a good approximation of the simplified model for calculating the modulus of elasticity in wooden structural bending here evaluated.Downloads
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