9 円柱の焼入れにより生じる残留応力について : 第3報相変態しない材料の残留応力分布の支配因子と系統的整理

概要

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The factor that influences the residual stress distribution generated by a quenching process was clarified and an analysis technique for estimating the residual stress distribution was established accurately even if the diameter of the cylinder is changed. First of all, a method of the numerical analysis was established through the comparative study of the experimental and the numerical analysis values of the residual stress distribution by using the steel material where the phase transformation is not generated during a quenching process. Next, using the established method of the numerical analysis, the influences of material constants and mechanical properties on the residual stress distribution were examined followed by clarifying the factor to estimate the residual stress distribution when the diameter of the cylindrical material is changed. Non-dimensional heat dissipation 'H' is important as for the factor of temperature, and each temperature dependency of linear expansion coefficient, Young's modulus and yield stress are important as for the factor of materials to analyze the residual stress distribution. It was confirmed that the residual stress distribution was able to be predicted by using Non-dimensional heat dissipation 'H' provided that the material was fixed and the diameter of cylinder was changed.
社団法人日本船舶海洋工学会の論文