円柱状介在物を含む非晶性高分子材料の引張変形挙動のシミュレーション(<小特集>:非弾性挙動の力学)

概要

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The blending with 20 to 40% volume fraction of inclusions having sizes in the range of 0.1 up to 10 μm is commonly used to control the mechanical properties of polymer. To clarify the mechanical aspect and provide quantitative picture associated with the improving mechanism of mechanical characteristics of the blended materials, the computatinal methods have been establisched with newly developed constitutive equation for glassy polymer that can reproduces the experimentally observed deformation behavior under large strain. The parametric study has been performed through series of simulation for the plane strain glassy polymer unit cell containing the different volume fraction and sized cylindical inclusions with different spacing and pattern of distribution. The results clarified the effect of these parameters on the characteristic feature of the onset and propagation of neck/shearband that essentially affect the macroscopic mechanical characteristics of the blended materials. Especially, it should be noted that the spacing of inclusions has key effect on the resulting mechanical properties of the blended materials.
一般社団法人日本機械学会の論文
2000-03-25