非等温移動硬化則における温度速度項の影響の検討

概要

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Effects of the temperature-rate term in nonisothermal modeling of kinematic hardening are studied. Two alternative forms of a nonlinear kinematic hardening rule (i.e.,multisurface and multicomponent forms) are discussed, together with a linear kinematic hardening rule. With material constants determined from isothermal tensile tests of 304 stainless steel, stress-strain relations under monotonic and cyclic thermomechanical loads are calculated to find the following: For the multisurface form of nonlinear kinematic hardening, intersection of surfaces may occur, if the temperature- rate term or the relative translation term is omitted. Neglect of the temperature-rate term may result in anomalous shift shifting of stress-strain hysteresis loops under thermomechanical cyclic loading, if the kinematic hardening rule employed includes a linear or nearly linear component.
一般社団法人日本機械学会の論文
1991-02-25