摘要
证明了目前最好的两个粘弹性固体模型的等价性 ;给出了热力学对我们提出的分数指数模型[1] 参数的限制 .计算表明 ,由于分数指数模型是包含适当多的参数的解析表达式 ,可与实验结果很好吻合 ,克服了上述模型收敛速度太慢的严重的缺点 ,具有简单实用、计算速度快、自相谐调的优点 .可以广泛应用于线性或非线性粘弹性工程实际问题的计算 .
The equivalence of the best viscoelastic models for solids at present is proved. The restriction of thermodynamics upon the parameters of the model is given. It is shown by calculations that since the model contains proper numbers of parameters and it is an analytic expression it can fit the experimental data with high precision. It overcomes the serious shortcoming of the above models, i.e.the convergence rate is very slow.It has the advantage of simplicity, practicality, high calculating speed, and self-consistent. The model can be widely used in the calculation of practical engineering problems of linear or nonlinear viscoelastic materials.
出处
《湘潭大学自然科学学报》
CAS
CSCD
2001年第2期31-36,共6页
Natural Science Journal of Xiangtan University
基金
国家自然科学基金! (19772 0 45 )
湘潭大学自然科学基金
