›› 2008, Vol. 29 ›› Issue (11): 2961-2966.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

A mix hardening unified viscoplastic damage constitutive model for concrete

LIU Chang-chun1, 2, LÜ He-xiang1, GUAN Ping3   

  1. 1. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China; 2. Shenyang Aeroengine Research Institute, Shenyang 110015, China; 3. Dalian University, Dalian 116622, China
  • Received:2007-01-30 Online:2008-11-10 Published:2013-08-07

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Abstract: The tyaditional unified viscoplasticity constitutive model is only applied for the constitutive analysis of metallic materials. A coupled viscoplasticity damage constitutive model for concrete is developed within the framework of irreversible thermodynamics; and an expression for the Helmholtz free energy function involving the state variables of mix hardening is given. The hardening model of concrete is analyzed; and the flow equation and the evolution equations of the state variables are derived from a non-associated flow potential function including the state variables of kinematic hardening and isotropic hardening. The results of numerical simulation show that the represented model can reproduce the strain-rate sensitive characteristic, inelastic volume dilatancy, softenting-hardening under loading; and strain-softening induced by damages and fractures.

Key words: concrete, irreversible thermodynamics, isotropic hardening, kinematic hardening

CLC Number: 

  • TU 452
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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