Numerical Methods in Civil Engineering
مجله روشهای عددی در مهندسی عمران
NMCE
Engineering & Technology
http://nmce.kntu.ac.ir
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admin
2345-4296
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8888
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en
jalali
1395
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gregorian
2017
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online
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en
A simple and efficient plasticity-fracture constitutive model for confined concrete
A simple and efficient plasticity-fracture constitutive model for confined concrete
تخصصي
Special
پژوهشي
Research
A plasticity-fracture constitutive model is presented for prediction of the behavior of
confined plain concrete. A three-parameter yield surface is used to define the elastic limit.
Volumetric plastic strain is defined as hardening parameter, which together with a nonlinear
plastic potential forms a non-associated flow rule. The use of non-associated flow rule
improves the prediction of the dilation behavior of concrete under compressive loading. To
model the softening behavior, a fracture energy-based function is used to describe strength
degradation in post-peak regime. The Euler-forward algorithm is used to integrate the
constitutive equations. The proposed model is validated against the results of triaxial
compressive experiments. Finally, the behavior of plain concrete confined by layers of carbon
fiber reinforced polymer is studied to show capability of the model for passive confinement.
A plasticity-fracture constitutive model is presented for prediction of the behavior of
confined plain concrete. A three-parameter yield surface is used to define the elastic limit.
Volumetric plastic strain is defined as hardening parameter, which together with a nonlinear
plastic potential forms a non-associated flow rule. The use of non-associated flow rule
improves the prediction of the dilation behavior of concrete under compressive loading. To
model the softening behavior, a fracture energy-based function is used to describe strength
degradation in post-peak regime. The Euler-forward algorithm is used to integrate the
constitutive equations. The proposed model is validated against the results of triaxial
compressive experiments. Finally, the behavior of plain concrete confined by layers of carbon
fiber reinforced polymer is studied to show capability of the model for passive confinement.
Plasticity-fracture, Constitutive model, Confined concrete
Plasticity-fracture, Constitutive model, Confined concrete
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http://nmce.kntu.ac.ir/browse.php?a_code=A-10-1-20&slc_lang=en&sid=en
Hadi
Meidani
Hadi
Meidani
`100319475328460037`

100319475328460037
Yes