辽宁工程技术大学学报（自然科学版）2023，Vol.42Issue(5)：564-571,8.DOI:10.11956/j.issn.1008-0562.2023.05.007
考虑时效损伤的沥青混合料分数阶蠕变模型
Fractional creep model of asphalt mixture considering aging damage
摘要
Abstract
In order to study the creep viscoelastic-plastic mechanical behavior of asphalt mixture,the Maxwell model is used as the basic model,and the fractional order calculus operator theory is used to construct the fractional order viscous body to replace the Newton body in the basic model.The nonlinear viscous damper is introduced and connected in series with the foundation model.The damage variable is defined,the damage evolution is carried out according to the Lemaitre equivalent strain principle,and the fractional creep model of asphalt mixture considering aging damage is obtained.The model parameters are solved,the parameter sensitivity is analyzed,and the damage evolution is carried out.The creep data of asphalt mixture are identified by using the model,and compared with the empirical model to verify the feasibility and rationality of the model.关键词
沥青混合料/时效损伤/蠕变/分数阶/黏滞阻尼器/损伤演化Key words
asphalt mixture/aging damage/creep/fractional order/viscous damper/damage evolution分类
交通工程引用本文复制引用
温丛格,路晓明..考虑时效损伤的沥青混合料分数阶蠕变模型[J].辽宁工程技术大学学报（自然科学版）,2023,42(5):564-571,8.基金项目
国家自然科学基金项目(41977227) （41977227）
