Timoshenko beam effect in flexural resonant column tests

E. C. Leong; Z. Y. Cheng

doi:10.1016/j.sandf.2018.09.005

Timoshenko beam effect in flexural resonant column tests

E. C. Leong^*, Z. Y. Cheng

^*Corresponding author for this work

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Current methods for deriving Young's modulus (E) from flexural resonant column tests do not account for the Timoshenko beam effect. Hence, the extent of the Timoshenko beam effect is investigated in this study using a series of numerical experiments performed by finite element program LS-DYNA. Prior to conducting the numerical experiments, LS-DYNA is verified for a cantilever beam to ensure that it is capable of accounting for the Timoshenko beam effect. The Young's modulus determined with the existing interpretation method for flexural resonant column tests, which does not consider the Timoshenko beam effect, is underestimated on average by about 11% for a typical resonant column specimen. A correction factor is proposed here to account for the Timoshenko beam effect using the existing interpretation method for flexural resonant column tests.

Original language	English
Pages (from-to)	234-239
Number of pages	6
Journal	Soils and Foundations
Volume	59
Issue number	1
DOIs	https://doi.org/10.1016/j.sandf.2018.09.005
Publication status	Published - Feb 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018

ASJC Scopus Subject Areas

Civil and Structural Engineering
Geotechnical Engineering and Engineering Geology

Keywords

Euler-Bernoulli
Flexure
Resonant column
Timoshenko beam
Young's modulus

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10.1016/j.sandf.2018.09.005

Cite this

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title = "Timoshenko beam effect in flexural resonant column tests",

abstract = "Current methods for deriving Young's modulus (E) from flexural resonant column tests do not account for the Timoshenko beam effect. Hence, the extent of the Timoshenko beam effect is investigated in this study using a series of numerical experiments performed by finite element program LS-DYNA. Prior to conducting the numerical experiments, LS-DYNA is verified for a cantilever beam to ensure that it is capable of accounting for the Timoshenko beam effect. The Young's modulus determined with the existing interpretation method for flexural resonant column tests, which does not consider the Timoshenko beam effect, is underestimated on average by about 11\% for a typical resonant column specimen. A correction factor is proposed here to account for the Timoshenko beam effect using the existing interpretation method for flexural resonant column tests.",

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AU - Leong, E. C.

AU - Cheng, Z. Y.

PY - 2019/2

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AB - Current methods for deriving Young's modulus (E) from flexural resonant column tests do not account for the Timoshenko beam effect. Hence, the extent of the Timoshenko beam effect is investigated in this study using a series of numerical experiments performed by finite element program LS-DYNA. Prior to conducting the numerical experiments, LS-DYNA is verified for a cantilever beam to ensure that it is capable of accounting for the Timoshenko beam effect. The Young's modulus determined with the existing interpretation method for flexural resonant column tests, which does not consider the Timoshenko beam effect, is underestimated on average by about 11% for a typical resonant column specimen. A correction factor is proposed here to account for the Timoshenko beam effect using the existing interpretation method for flexural resonant column tests.

KW - Euler-Bernoulli

KW - Flexure

KW - Resonant column

KW - Timoshenko beam

KW - Young's modulus

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Timoshenko beam effect in flexural resonant column tests

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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