改良形フラクションモデルと SUS 304 のクリープ変形に対する適用

概要

論文の詳細を見る
A modified fraction model is proposed to represent the inelastic behavior of metal. In the proposed model, the inelastic strain of each volume fraction is expressed by only one component which includes plastic and creep strain in a unified way. This is the different point from the conventional fraction model originally proposed by Besseling where the inelastic strain of each volume fraction is divided to the time independent plastic strain and the time dependent creep strain. The proposed model eliminates the ambiguity in the determination of creep parameters which exists in the conventional fraction model and all material parameters of the model can be determined by usual uniaxial tensile test of several strain rates. Several example calculations and comparison with the test data have revealed that the proposed model has the capability of representation of the plastic, creep and plastic creep interaction behavior of metals.
1984-05-25