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首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.1; 20051026-28; Nanjing(CN) >The Influence of Roller-trace on the Maximal Stress during Multi-pass Conventional Spinning
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The Influence of Roller-trace on the Maximal Stress during Multi-pass Conventional Spinning

机译：辊迹对多道常规纺丝过程中最大应力的影响

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摘要

Establishing a reasonable mechanical model of multi-pass conventional spinning, the influence of the curvature radius of roller-trace on the maximal stress was researched throughly using elasto-plastic FEM method, thus it shows the influence of the curvature radius of roller-trace on forming of multi-pass conventional spinning. The present results indicate that the effect of the curvature radius of roller-trace on the maximal stress are almost identical for the blanks with different diameter and various thickness, but the curvature radius of roller-trace has little effect on the maximal stress after the curvature radius exceeds some value. When the entry tangential angle of roller is large, the maximal stress varies nonlinear change with the increasing of the curvature radius of roller-trace, and the influence of the curvature radius of roller-trace on the maximal stress becomes more obviously. The curvature radius of roller-trace has a greater effect on the maximal stress with the growing of the pass number.
机译：建立合理的多道次常规纺丝力学模型，利用弹塑性有限元方法研究了辊道曲率半径对最大应力的影响，从而显示了辊道曲率半径对最大应力的影响。多道常规纺丝的成型。结果表明，对于不同直径，不同厚度的毛坯，辊道曲率半径对最大应力的影响几乎相同，但曲率半径后辊道曲率半径对最大应力的影响很小。半径超过某个值。当滚子进入切向角较大时，最大应力随滚子轨迹曲率半径的增加而非线性变化，并且滚子轨迹曲率半径对最大应力的影响更加明显。随着通过次数的增加，辊道的曲率半径对最大应力的影响更大。

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