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Constitutive Model for Short-Time Loading of Concrete

In English

Författare

Summary, in English

A constitutive model based on nonlinear elasticity is proposed, where the secant values of Young’s modulus and Poisson’s ratio are changed appropriately. This alteration is obtained through the use of a nonlinearity index that relates the actual stress state to the failure surface. The model simulates the strain hardening before failure, the failure itself and the strain softening in the post-failure region. The dilation of the concrete and the influence of all three stress invariants are considered. All stress states including those where there are tensile stresses can be dealt with; however, the model is calibrated using experimental data obtained by a uniaxial compressive and tensile test only. The model predictions are demonstrated to be in good agreement with experimental results involving a wide range of stress states and different types of concrete.

Publiceringsår

1979

Språk

Engelska

Sidor

127-141

Publikation/Tidskrift/Serie

Journal of the Engineering Mechanics Division ASCE

Volym

105

Dokumenttyp

Artikel i tidskrift

Ämne

  • Mechanical Engineering

Nyckelord

  • Combined stress
  • Concrete
  • Deformation
  • Dilatancy
  • Softening
  • Strain hardening
  • Stress strain relations

Status

Published