周期性载荷下胶凝原油响应特性实验分析  

Experimental analysis on response characteristics of gelled crude oil under cyclic loading

作　　者：卢兴国[1] 刘刚[1] 

机构地区：[1]中国石油大学(华东)油气储运工程系,山东266580

出　　处：《当代化工研究》2016年第9期131-133,共3页Modern Chemical Research

基　　金：国家自然科学基金(51574274)资助;中央高校基本科研业务费专项资金(14CX02107A)

摘　　要：对胶凝原油开展周期性载荷作用实验,研究其应变响应特性,分析应变-应力曲线变化规律及其流变学特征,实验结果表明:应力幅值较小时,应变响应幅值基本不变,随应力幅值的增加,应变响应变幅值随作用时间延长而增大,且其响应周期变长;应力幅值增加时,应变-应力曲线逐渐向椭圆形发展;随温度的升高,向应变轴发生偏转;且随作用周期的增大,应变幅值不断增加。To carry out cyclic loading experiment for the gelled crude oil and study the strain response characteristics, then analyze changerule and the rheological characteristics of the strain vs stress curves, the experimental results show that when the stress amplitude is small, the strain response amplitude remain unchanged, with the increase of stress amplitude, the strain response amplitude increases when the action time extend; the curve will go through the rod-spindle-ellipse with the increase of the stress amplitude; when the temperature rise, the curve deflect to strain axis; also the strain amplitude will increase with the addition of action cycle.

关 键 词：胶凝原油 周期性应力 应变响应 应变-应力曲线 

分 类 号：TU375.01[建筑科学—结构工程]