高分子材料の粘弾塑性挙動における材料非線形性に関する研究(クリープ,OS.14 先進材料の力学)

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This paper presents experimental results and theories about nonlinear visco-elastic/plastic behavior in polymeric materials. Nonlinear visco-elastic/plastic behavior has been formulated by the well-known Schapery's model that employs the four nonlinear parameters. In this study, the three parameters of them are determined from the experimental results in creep-recovery tests by the method proposed by Cardon. The new method to determine the other parameter that expresses static yielding or the viscoplastic strain is investigated and a relationship between the viscoplastic strain and the applied stress in the creep-recovery tests is discussed. It is found that the viscoplastic strain can be formulated as a function of stress. And, the availability of the fourth nonlinear parameter is verified by the multiple step creep tests.
一般社団法人日本機械学会の論文
2004-03-03