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Abstracted in databases:
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2015 Impact Factor: 0.519 ©2015 Thomson Reuters, 2015 Journal
Citation Report®
ISSN 1822-427X print
ISSN 1822-4288 online
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"The Baltic Journal of Road and Bridge Engineering"
Vilnius: Technika, 2010, Vol
V, No
1, p. 19–27. |
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Viktor Gribniak, Gintaris Kaklauskas,
Siim Idnurm, Darius Bačinskas |
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Finite Element Mesh Size Effect on
Deformation Predictions of Reinforced Concrete
Bridge Girder |
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DOI: 10.3846/bjrbe.2010.03 |
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Present research was dedicated to investigation of
finite element size effect on deformation
predictions of reinforced concrete bending members.
Experimental beams have been modelled by commercial
finite element software ATENA, using two main
approaches for simulating tension-stiffening:
stress-crack width (fracture mechanics approach) and
average stress-average strain relationships. The
latter approach uses the ultimate strain adjusted
according to the finite element size. It was shown
that the modelled post-cracking behaviour of the
beams is dependent on the finite element mesh size.
To reduce this effect, a simple formula has been
proposed for adjusting the length of the descending
branch of the constitutive relationship.
Post-cracking behaviour of a reinforced concrete
bridge girder has been investigated assuming
different finite element mesh sizes. The analysis
has shown that the proposed technique allows
reducing the dependence of calculation results on
the finite element size. |
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Keywords:
reinforced concrete (RC), finite element size,
deformations, tension-stiffening, crack band model.
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