科技创新与应用2025，Vol.15Issue(15)：51-55,5.DOI:10.19981/j.CN23-1581/G3.2025.15.012
沥青混合料分数阶蠕变损伤力学模型研究
摘要
Abstract
To efficiently simulate the creep mechanical behavior of asphalt mixtures,a fractional order viscoelastic body and a damage viscous-viscoplastic body were established through fractional calculus and damage mechanics theory.Based on the Burgers model architecture,a new fractional order creep damage mechanics model for asphalt mixtures was obtained.Analysis found that:Asphalt mixture exhibits obvious three-stage characteristics of instantaneous deformation and creep under stress load;The damage variable accumulates and increases over time,eventually approaching 1,and there is a certain point in time where the accumulation rate of the damage variable switches between high and low;By simulating and comparing the creep test data of three types of asphalt mixtures using the new and Burgers models,the average R2 values of the new and Burgers models were 0.990 6 and 0.930 3,respectively,to prove the feasibility and applicability of the new model.关键词
沥青混合料/蠕变/分数阶/损伤/Burgers模型Key words
asphalt mixture/creep/fractional order/damage/Burgers model分类
交通工程引用本文复制引用
黄海峰,淳熙恒,赵立财,杨智翔,周炜,吕辉,吴志勇..沥青混合料分数阶蠕变损伤力学模型研究[J].科技创新与应用,2025,15(15):51-55,5.基金项目
四川省交通运输科技项目(2022-ZL-02) （2022-ZL-02）
辽宁省"兴辽英才计划"青年拔尖人才资助项目(XLYC2007146) （XLYC2007146）
