以便描述三阶段爬压缩沥青乳香的行为, visco-elastoplastic 损坏组成的模型在这个工作被建议。模型参数关于应力和温度被当作二次的多项式函数。一系列单轴压缩爬实验在各种各样的应力和温度条件被执行以便决定这些参数功能,然后建议模型被在预言和实验之间的比较以另外的装载条件验证。它与提高的应力很快在低应力和温度增加被看那很小的永久变丑或温度和损坏可以在静止阶段开始,但是主要在加速的阶段发展。与没有损坏的 visco-elastoplastic 模型相比,从建议模型的预言在对实验的更好的同意,并且能更好捕获率相关性在爬特别在它的弄软下面的沥青乳香的回答 47 指 ? “
In order to describe the three-stage creep behavior of compressed asphalt mastic, a visco-elastoplastic damage constitutive model is proposed in this work. The model parameters are treated as quadratic polynomial functions with respect to stress and temperature. A series of uniaxial compressive creep experiments are performed at various stress and temperature conditions in order to determine these parameter functions, and then the proposed model is validated by comparison between the predictions and experiments at the other loading conditions. It is shown that very small permanent deformation at low stress and temperature increases rapidly with elevated stress or temperature and the damage may initiate in the stationary stage but mainly develops in the accelerated stage. Compared with the visco-elastoplastic models without damage, the predictions from the proposed model is in better agreement with the experiments, and can better capture the rate-dependency in creep responses of asphalt mastic especially below its softening point of 47 ℃