Mechanism of complicated volume deformation in polymers and its fractional time-based description
(0) In tension and compression of polymers, some abnormal phenomena of volume changes were often observed and its mechanism is still unclear.In this paper, based on the thermodynamics principle, it is shown that the combined effects of internal energy and entropy are the basic reason of causing the anomaly in polymers.Moreover, to describe the complicated deformation through a simple model and have a correct modelization of mechanical behaviors, a volume strain model is presented, in which the variation of volume strain resulted from the combined effects is characterized through a fractional integral expression.Comparison between fitting results and experimental results reveals the proposed model can describe the volume deformation of polymers.
Mechanism Complicated volume deformation Polymer Fractional calculus Model
Deshun Yin Ruifan Meng Xiaomeng Duan Yanqing Li
Hohai University, Nanjing 210098, China
国内会议
广州
英文
10-19
2014-12-21（万方平台首次上网日期，不代表论文的发表时间）