Considerable errors caused by shear deflection and rotary inertia in both-ends clamped flexural vibration make the modulus of elasticity hardly obtainable in flexurally excited beams with similar ending conditions. As both-ends clamped beams and columns are necessarily quality controlled in situ within the building structures, this study has attempted to identify some initial requirements for the dynamic responses of a sound both-ends clamped beam under flexural vibration. Accordingly, the dynamic responses of the both-ends clamped wooden beams in radial and tangential flexural vibration were compared to beams in a free-free condition while stepwise increasing axial compressions were applied to the beams. Both-ends clamped beams had the potential to be subjected to in situ longitudinal Young's modulus evaluations. The strong correlations among both-ends clamped and free-free beams in terms of evaluated moduli verified the possibility.
Assessment, beam, clamped, structure, vibration, Young's modulus
ROOHNIA, MEHRAN; YAGHMAEIPOUR, ABDOLSABER; KUBOJIMA, YOSHITAKA; and TAJDINI, AJANG
"Free vibration of both-ends clamped wooden beams: is it potentially applicable as an in situ assessment method?,"
Turkish Journal of Agriculture and Forestry: Vol. 37:
1, Article 14.
Available at: https://journals.tubitak.gov.tr/agriculture/vol37/iss1/14