NDLI: Dynamic excitation and FE analysis to assess the shear modulus of structural timber

Content Provider	Springer Nature Link
Author	Cavalli, Alberto Marcon, Bertrand Cibecchini, Daniele Mazzanti, Paola Fioravanti, Marco Proci, Lorenzo Togni, Marco
Copyright Year	2017
Abstract	A total of 99 Silver fir lumbers were tested by means of torsional vibration, to calculate the shear modulus; and free–free flexural vibration, to calculate the Modulus of Elasticity. The first five frequencies of vibration in bending were recorded and used to evaluate the shear modulus by finite elements approach. The present work shows that, thanks to flexural vibration test, it is possible to predict the torsional shear modulus using the Modulus of Elasticity and the first five frequencies of vibration deduced from flexural vibration tests (r $^{2}$ = 0.66, with high significance level). At present this work is the first one able to predict the shear modulus on structural lumber instead of small specimens, and the work is validated by comparing the results to the shear modulus calculated using another technique (torsional vibration test). This work has an important practical significance since it is carried out on structural lumber. The proposed method offers the possibility to predict the shear modulus with higher accuracy if compared to the European standard EN338, suggesting that flexural excitation test can be used in practice for a more accurate shear modulus prediction.
Starting Page	1
Ending Page	8
Page Count	8
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	50
Issue Number	2
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2017-01-25
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Finite elements analysis Structural timber Shear modulus Torsional vibration Flexural vibration Structural Mechanics Materials Science Theoretical and Applied Mechanics Operating Procedures, Materials Treatment Civil Engineering Building Materials
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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