ポリフェニレンエーテルの圧縮非弾性変形挙動とその数値解析に関する研究

概要

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Monotonic compressive loading and relaxation tests were conducted under constant and time-varying strain rate conditions of 1.1×10^<-2>-10^<-5> and 10-40℃ for polyphenylen-ether (PPE), an amorphous polymer. The observed stress-strain responses were similar to those of other engineering plastics showing notable effects of the strain rates and temperature, but the strain-rate change tests revealed predominant overshoot phenomena in the stress transfer processes. The experimental results indicated that the concept of time-temperature equivalence is also applicable to PPE and the comparative investigation on the effect of crystallinity and the material constants which control the time-temperature scale shift was carried out for five polymeric materials. The viscoplastic constitutive model based on overstress successfully reproduced the observed stress-strain responses including the overshoot phenomena using a newly proposed additional function which control the viscosity in the model.
一般社団法人日本機械学会の論文
2005-02-25