| 管材无模扩径壁厚变化数学模型研究 |
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| 引用本文： | 郭颖,王忠堂.管材无模扩径壁厚变化数学模型研究[J].数学的实践与认识,2007,37(11):7-12. |
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| 作者姓名： | 郭颖 王忠堂 |
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| 作者单位： | 1. 沈阳工程学院,基础部,沈阳,110136
2. 沈阳理工大学,材料科学与工程学院,沈阳,110168 |
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| 摘 要： | 对管材无模扩径变形速度场及壁厚变化规律进行了理论及实验研究.分析了管材无模扩径的变形模型、速度场以及壁厚变化的影响因素及影响规律,采用上限法确定了管材无模扩径速度场及壁厚变化数学模型.
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| 关 键 词： | 无模扩径 壁厚变化 上限法 数学模型 |
| 修稿时间： | 2006年11月1日 |
Mathmatical Model of Variation of Wall Thickness During Tube Dieless Upsetting |
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| GUO Ying,WANG Zhong-tang.Mathmatical Model of Variation of Wall Thickness During Tube Dieless Upsetting[J].Mathematics in Practice and Theory,2007,37(11):7-12. |
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| Authors: | GUO Ying WANG Zhong-tang |
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| Abstract: | Velocity field and variation of wall thickness are studied theoretically during tube dieless upsetting. It has been put forward that the variation of wall thickness is in directly proportion to outer-diameter,inter-diameter,and 1+RS(RS is sectional increase ratio of tube).It has been found that the theoretical calculating results of wall thickness during tube dieless upsetting are very approximate to that of experiment.With the width of deformation increasing,but the value of variation of wall thickness and the derivative of wall thickness variation(tf/t0) to width of deformation both reduces. |
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| Keywords: | dieless upsetting wall thickness Up boundary method mathmatical model |
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