| 复合挤压变形规律的研究 |
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| 引用本文： | 刘化民,白志斌,梁继才. 复合挤压变形规律的研究[J]. 中国机械工程, 1999, 10(12): 1398-1400 |
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| 作者姓名： | 刘化民 白志斌 梁继才 |
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| 作者单位： | 吉林工业大学 |
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| 基金项目： | 国家自然科学基金!资助项目 ( 5 92 75 2 0 7) |
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| 摘 要： | 利用光塑性方法模拟研究复合挤压变形，获得变形区的全场应变分布曲线；分析材料的流动规律，将变形体分为挤压型变形区，镦粗型变形区和刚性区３个特性区域。建立上限模型，分析模具几何参数对复合挤压变形的影响，证明凸模直径与正挤出口直径对复合挤压变形的影响最大。
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| 关 键 词： | 复合挤压 光塑性 上限分析 分流区 变形规律 |
Study on theDeformation Law of Combined Extrusion |
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| Liu Huamin. Study on theDeformation Law of Combined Extrusion[J]. China Mechanical Engineering, 1999, 10(12): 1398-1400 |
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| Authors: | Liu Huamin |
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| Abstract: | The deformation law of combined extrusion was studied by the photoplastic method.The strain distribution in the whole deformation zone was obtained. It is shown that there were three special deformation zones in the specimen.On the basis of the results,the upper bound model was established and the influence of all geometric factors on the deformation was analysed.The results show that the diameters of the die and forming exit play more important role on combined extrusion. |
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| Keywords: | Combined extrusion Photoplastic method Upper bound method neuter region. |
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