Stress-based elastic anisotropic unilateral degradation model for concrete

J. Li, J. Y. Wu (2007). "Stress-based elastic anisotropic unilateral degradation model for concrete." In Proceedings of FraMCoS 6, Catania, Italy.

J. Li, J. Y. Wu. "Stress-based elastic anisotropic unilateral degradation model for concrete." Paper presented at FraMCoS 6, Catania, Italy, 2007.

J. Li, J. Y. Wu, "Stress-based elastic anisotropic unilateral degradation model for concrete," in Proc. FraMCoS 6, Catania, Italy, 2007.

@inproceedings{j-li2007,
  title     = {Stress-based elastic anisotropic unilateral degradation model for concrete},
  author    = {J. Li, J. Y. Wu},
  year      = {2007},
  booktitle = {Proceedings of FraMCoS 6},
  address   = {Catania, Italy},
}

TY  - CPAPER
TI  - Stress-based elastic anisotropic unilateral degradation model for concrete
AU  - J. Li
AU  - J. Y. Wu
PY  - 2007
T2  - Proceedings of FraMCoS 6
CY  - Catania, Italy
UR  - https://framcos.org/wp-content/uploads/framcos-papers/Stress-based_elastic_anisotropic_unilateral_degradation_model_for_concrete.pdf
AB  - Inthispaperathermodynamicallyconsistentstress-based elastic anisotropic degradation unilat- eral model is proposed and then applied to concrete modeling. The increases of the intrinsic secant compliances cumulatedunderpurelypositiveandpurelynegativestressesare adopted as theinternal variables, and therefore thehypothesisofstrainequivalenceorstrainenergyequivalenceisnolongerrequired. Todescribetheunilateral effects, the new consistent positive and negative projection operators are proposed, and the secant constitutive law is then established within the framework of irreversible thermodynamics. The rate formulations and the corresponding tangent stiffness are also derived, which can be employed to develop standard structure of the classical multisurface return mapping integration algorithm. Finally, the proposed model is verified by applica- tion to concrete modeling.
ER  -