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圆柱形坯料与凹形坯料镦粗过程中典型点的加载轨迹及应力分布的对比
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英文标题：Comparison of loading path and stress distrbution in the upsetting processes of a cylindrical billet and a concave billet |
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作者：詹艳然 王仲仁 |
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单位：哈尔滨工业大学!150001 哈尔滨工业大学!150001 |
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关键词：有限元 镦粗 屈服表面 加载轨迹 |
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分类号：TG31 |
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出版年,卷(期):页码：1997,22(1):3-8 |
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摘要：
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利用有限元法对圆柱形坯料及凹形坯料镦粗过程的数值模拟结果，给出了工件变形区中典型点在屈服表面上的加载轨迹，通过对加载轨迹的研究，揭示了凹形坯料缴粗不易出现纵向裂纹的原因。
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In this paper, FEM is used to simulate the upsetting processes for a cylindrical billet and a concave billet respectively. With the simulation results, it is obtained of the loading paths of several typica1 points in the deformation zone, and the reason is also obtained why concave billet is not easy to be fractured in the outer surface during the upsetting processes.
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基金项目：
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作者简介：
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参考文献：
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1王仲仁等.塑性加工力学基础.北京:国防工业出版社,1989。
2王仲仁,李守栋等.论屈服轨迹上的应力分区及其与塑性成形时工件尺寸变化的对应关系.金属学报,1982
3Z.R.Wang.AConsistent Relationship between theStress-and Strain-Components and Its Application for Analyzing the foe Plane-Stress Forming Process.Journal of MaterialsProcessing Technology,1995,55(1).
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