کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
258298 | 503615 | 2013 | 12 صفحه PDF | دانلود رایگان |
A serial two-stage viscoelastic–viscoplastic constitutive model is developed using internal variables theory and orthogonality principle of thermodynamics for modeling time-dependent behavior of asphalt concrete mixtures. In one stage when the actual stress is lower than the yield stress, the constitutive model only exhibit viscoelastic component, while in another stage when the actual stress exceeds the yield stress, the constitutive model exhibit both viscoelastic and viscoplastic components. Model parameters of viscoelastic component are estimated using data obtained from dynamic modulus test, whereas model parameters of viscoplastic component are consecutively estimated from creep test, assuming a known viscoelastic component.
► A two-stage VE–VP constitutive model is proposed.
► Internal variables theory and orthogonality principle of thermodynamics are used.
► The model simulates the nonlinear time-dependent behavior of asphalt mixtures.
► Model parameters of VE component are estimated from dynamic modulus test.
► Model parameters of VP component are consecutively estimated from creep test.
Journal: Construction and Building Materials - Volume 40, March 2013, Pages 584–595