대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2007년도 춘계학술대회A
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- Pages.1379-1382
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- 2007
열간 빌렛의 평롤 압연시 압연하중 예측
Prediction of Roll Force in Hot Grooveless Rolling of Billet
- 발행 : 2007.05.30
초록
In this paper, we present a simplified analytic approach for the prediction of roll force to be applicable to the grooveless rolling. The approach is based on the deformation shape deduced from physical considerations and employs the assumption that the deformation homogeneously occurs in three directions. Strain and strain rate are calculated by the geometric relationships between those components and the prescribed deformation functions. Then, stress components are obtained from the Levy-Mises' flow rule. By integrating the stress components along the rolling direction, roll force are finally obtained. The prediction accuracy of the proposed model is examined through comparison with results obtained from the finite element analysis.