G030151 損傷力学に基づくねずみ鋳鉄の材料モデリング([G03015]材料力学部門一般セッション(15):損傷と変形)

概要

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The constitutive equation based on the concept of continuum damage mechanics is formulated for the gray cast iron, assuming it as an elastic damage viscoplastic solid. The microscopic stress and strain evaluation is simplified in the two-scale model for the damage evolution. Lots of material parameters in the constitutive equation are determined by using the uniaxial tensile/compressive and the fatigue test results. The local approach to fracture analysis (the uncoupled analysis) for the fatigue tests of notched circular bars is conducted by using the identified constitutive equation model and the commercial three-dimensional finite element program. The validity of the proposed model is illustrated by comparing the calculated results with the experimental results.
一般社団法人日本機械学会の論文
2011-09-11