Determination of the longitudinal modulus of elasticity in structural sawn wooden beams by the least squares method

Vértices

关键词: Sawn wood. Modulus of elasticity. Least Squares Method.;   

DOI  :  10.5935/1809-2667.20120032

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown