Damage model for concrete-like materials coupling cracking and friction, contribution towards structural damping: first uniaxial applications

Ragueneau, Frédéric; Borderie, Christian La; Mazars, Jacky

doi:10.1002/1099-1484(200011)5:8<607::aid-cfm108>3.0.co;2-k

Cited by 82 publications

(63 citation statements)

References 17 publications

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“…In practice, an additional viscous damping is often used to account for dissipations not taken into account by the structural model [1,2], particularly in its linear domain [3]. As shown in [4,5], combining both types of dissipations (i.e.…”

Section: Introductionmentioning

confidence: 99%

How Are the Equivalent Damping Ratios Modified by Nonlinear Engineering Demand Parameters?

Heitz¹,

Giry²,

Richard³

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Abstract. When attempting to predict the seismic response of reinforced concrete (RC) structures, a trade-off has to be found out between a realistic representation of the dissipations through material behavior law and a numerically more efficient modeling with a controlled computational demand such as a Rayleigh-type damping model. Anyway, constitutive laws only describe internal dissipation and actually need a complementary dissipation term often chosen as a proportional damping matrix to take into account external dissipation sources such as interactions with the environment. Decoupling these two contributions in global dissipation measurement from experimental tests is still challenging. To address this problem, a numerical study based on an experimentally identified structural model is here presented. To this end, an experimental campaign has been carried out on RC beams set up on the AZALEE shaking table of the TAMARIS experimental facility operated by the French Alternative Energies and Atomic Energy Commission (CEA). In this paper, the experimental campaign is first presented. Secondly, a suited constitutive model is formulated and identified from the experimental results. Third, numerical dynamic experiments are carried out in order to assess the influence of several parameters on the energy dissipation and on the equivalent viscous damping ratio through two different methods. The validity of these results is assessed on a numerical case where a nonlinear model and an equivalent linear model are compared with each other. Experimental results of dynamic tests are also used as reference in order to estimate the additional viscous damping necessary to take into account the whole energy dissipation.

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Section: Introductionmentioning

confidence: 99%

How Are the Equivalent Damping Ratios Modified by Nonlinear Engineering Demand Parameters?

Heitz¹,

Giry²,

Richard³

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…Actually, experimental observations justify the fact that every inelastic phenomenon of concrete is manifested from the appearance and evolution of microcracks [Ragueneau et al 2000]. In addition, the diagonal structure of the slip matrix implies that no coupling is assumed between hinges.…”

Section: Thermodynamic Framework Of the Modelmentioning

confidence: 99%

Application of a lumped dissipation model to reinforced concrete structures with the consideration of residual strains and cycles of hysteresis

Araújo¹,

Proença²

2008

JOMMS

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The nonlinear analysis model for reinforced concrete plane frame structures is based on the simplified concept of the localization of irreversible physical processes at previously definite zones, denominated here as generalized hinges. However, when both damage due to the microcracking of concrete and sliding mechanisms (aggregate interlocking) at crack surfaces are taken into consideration, hysteresis loops can be reproduced if the loading history includes unloading cycles. The thermodynamic approach of the model is herein developed with reference to generalized variables due to its application in the framework of the classical theory of bars under bending load. According to this model, there are three scalar variables: a damage variable, the plastic rotation of the section and the sliding-associated rotation of the section. By comparison with available experimental responses, the numerical examples illustrate the good performance of the model.

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“…Damage is assumed to evolve according to the formulation originally addressed in Alfano and Crisfield (2001), while the frictional behavior is governed by a Coulomb law. A similar approach has been developed in Ragueneau et al (2000) to define the stress-strain relationship for continuum media.…”

Section: Introductionmentioning

confidence: 99%

A thermodynamically consistent derivation of a frictional-damage cohesive-zone model with different mode I and mode II fracture energies

Serpieri¹,

Sacco²,

Alfano³

2015

European Journal of Mechanics - A/Solids

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The present paper deals with the derivation of an interface model characterized by macroscopic fracture energies which are different in modes I and II, the macroscopic fracture energy being the total energy dissipated per unit of fracture area.It is first shown that thermo-dynamical consistency for a model governed by a single damage variable, combined with the choice of employing an equivalent relative displacement and of a linear softening in the stress-relative displacement law, leads to the coincidence of fracture energies in modes I and II. To retrieve the experimental evidence of a greater fracture energy in mode II, a micro-structured geometry is considered at the typical point of the interface where a Representative Interface Element (RIE) characterized by a periodic arrangement of distinct inclined planes is introduced. The interaction within each of these surfaces is governed by a coupled damage-friction law.A sensitivity analysis of the correlation between micromechanical parameters and the numerically computed single-point microstructural response in mode II is reported. An assessment of the capability of the model in predicting different mixed mode fracture energies is carried out both at the single microstructural interface point level and with a structural example. For the latter a double cantilever beam with uneven bending moments has been analyzed and numerical results are compared with experimental data reported in the literature for 1 different values of mode mixity.

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Damage model for concrete-like materials coupling cracking and friction, contribution towards structural damping: first uniaxial applications

Cited by 82 publications

References 17 publications

How Are the Equivalent Damping Ratios Modified by Nonlinear Engineering Demand Parameters?

How Are the Equivalent Damping Ratios Modified by Nonlinear Engineering Demand Parameters?

Application of a lumped dissipation model to reinforced concrete structures with the consideration of residual strains and cycles of hysteresis

A thermodynamically consistent derivation of a frictional-damage cohesive-zone model with different mode I and mode II fracture energies

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