摘要
利用MTS810型电液伺服试验系统对沥青混合料小梁试件在四种温度下进行了大量等应变率加载控制的拉伸试验。由时温等效原理按Arrhenius移位因子得到基准温度下的拉伸模量主曲线。将连续性损伤因子与Maxwell粘弹性模型耦合推导得到考虑损伤的粘弹性模型。由于考虑了材料的损伤效应, 理论模型与实验结果吻合较好。
Using a MTS810 electro-hydraulic servo testing system,a large number of tests have been conduoted on asphalt mixture beams under tension with uniformly controlled strain velocity and four temperature levels.A master curve of tensile modulus is obtained through the equivalence principle of time and temperature,using the Arrhenius shift factor.Coupling damage factor into the MAXWELL model,a viscoelastic model with damage is established.With the consideration of material damage characteristics,the model is in good agreement with the experiment results.
出处
《土木工程学报》
EI
CSCD
北大核心
2005年第4期125-128,共4页
China Civil Engineering Journal
基金
湖南省自然科学基金资助项目 (批准号: 01JJY2148)
关键词
沥青混合料
损伤因子
粘弹模型
asphalt mixture
damage factor
viscoelastic mode
