アルミニウム薄板の深絞り容器に生ずる耳の結晶学的解析
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概要
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The earing of cups drawn from circular blanks of FCC polycrystalline metals was calculated crystallograph-ically using their measured texture data represented as a three-dimensional crystallite orientation distribution function. In the analysis the polycrystalline sheet is simplified to an aggregation of single crystals with various orientations of which volume fraction is represented as an orientation distribution function. The circumferencial distribution of a radial strain, which corresponds to the cup profile is calculated. The work-hardening rule of a crystal is expressed by an equation, τ/σ = kγn + μ0 (τ: shear stress, γ: shear strain, σ: radial tensile stress in a flange). The effect of values of unknown constants in the equation upon a calculated result was examined. By comparing the results with experimental ears formed on cups for twelve kinds of aluminum sheets, it is found that the number, positions and heights of ears are predicted not only qualitatively but also quantitatively by the calculation when the values of μ0 and n are 00.1 and 1.0 respectively, while k is eliminated in the calculation.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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