Upper-Bound Solution of Metal forming Problem with the Flow Function Velocity Model
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摘要: 采用流函數法構造了塑性變形金屬流動的完備速度模式,對Mises材料平面變形和軸對稱變形問題,提出并推證了運動可能速度場應滿足的力學邊界條件一"邊界切應力"約束方程.將求解與運動可能速度相對應的應力場歸結為確定一點靜水壓力的問題,實現了由上限法確定問題的完全解.應用這一理論對錐模拔管問題進行了計算分析.Abstract: The complete velocity model for plastic metal is structured with flow function.The boundary tear stress condition, which should be met by the velocity field of the Mises material plan or axisymmetrical deformation, is raised. The stress field corresponding the velocity could be obtained by the resolution of one point uniform stress and the answer for tube drawing process is ascertained with this sort of theorem.
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Key words:
- flow function /
- upper bound approach /
- mechanics retrain
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