| 摩擦圆辊直径与摩擦包角对板成形摩擦系数测量的影响 |
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| 引用本文： | 徐岩,李泷杲,高霖,韦红余. 摩擦圆辊直径与摩擦包角对板成形摩擦系数测量的影响[J]. 机械科学与技术, 2008, 27(3): 305-309 |
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| 作者姓名： | 徐岩 李泷杲 高霖 韦红余 |
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| 作者单位： | 南京航空航天大学,机电学院,南京,210016;南京航空航天大学,机电学院,南京,210016;南京航空航天大学,机电学院,南京,210016;南京航空航天大学,机电学院,南京,210016 |
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| 摘 要： | 基于Duncan方法设计了一种板料成形摩擦系数测试装置,用以考察摩擦圆辊的直径和摩擦包角对摩擦系数计算的影响。正交试验分析表明:随着摩擦圆辊直径和摩擦包角的增大,由板料弯曲和包角边界造成的摩擦系数计算干扰效应将逐级减小,进而计算摩擦系数也逐步减小,并且最终趋向真实摩擦系数。基于最终试验分析结果,得出包角在90°,圆辊直径在30 mm左右时,测得的摩擦系数可以忽略弯曲效应和包角边界效应,能反映真实摩擦状态,可以用于后续的金属板料成形有限元模拟。
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| 关 键 词： | 板成形 摩擦系数 有限元 |
| 文章编号： | 1003-8728(2008)03-0305-05 |
| 修稿时间： | 2007-06-04 |
Influnence of Friction Column Diameter and Friction Angle on Friction Coefficient Testing in Sheet Metal Forming |
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| Xu Yan,Li Shuanggao,Gao Lin,Wei Hongyu. Influnence of Friction Column Diameter and Friction Angle on Friction Coefficient Testing in Sheet Metal Forming[J]. Mechanical Science and Technology for Aerospace Engineering, 2008, 27(3): 305-309 |
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| Authors: | Xu Yan Li Shuanggao Gao Lin Wei Hongyu |
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| Abstract: | A new friction coefficient measuring apparatus which is based on Duncan′s theroy was designed to test the effect of the friction column diameter and friction angle on the friction coefficient computing.Orthogonal experiments show that with the increase of the friciton column diameter and angle,the effect of disturbance caused by the blank bending and the angle boundary on computing the friction coefficient attenuates gradually,and then the calculated value of friction coefficient also decreases gradually and trends towards the real value finally.Based on the the final experimental results,it is found that when the column diameter is around 30 mm and the angle is around 90°,the effect of distrubance can be ignored and the calculated value of friction coefficient is precise enough to be used in the blank sheet finite element simulation. |
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| Keywords: | sheet metal forming friction coefficient finite element simulation |
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