| 非稳态挤压刚-粘塑性有限元分析中的误差估计和双重网格技术 |
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| 引用本文： | 郭永明. 非稳态挤压刚-粘塑性有限元分析中的误差估计和双重网格技术[J]. 航空学报, 1990, 11(1): 53-58 |
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| 作者姓名： | 郭永明 |
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| 作者单位： | 南京航空学院 |
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| 摘 要： | 本文在刚-粘塑性有限元法中,应用误差估计和双重网格技术,并通过所设计的前后处理程序,有效和直观地模拟了管材非稳态挤压过程,用计算机绘出了分析网格和材料网格的变形图以及应变等值线图。
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| 关 键 词： | 有限元法 成形 挤压 误差估计 双重网格 |
ERROR ESTIMATION AND DOUBLE MESH FOR RIGID-VISCOUS-PLASTIC FINITE ELEMENT ANALYSIS OF UNSTEADY EXTRUSION PROCESSES |
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| Nanjing Aeronautical Institute Guo Yangmine. ERROR ESTIMATION AND DOUBLE MESH FOR RIGID-VISCOUS-PLASTIC FINITE ELEMENT ANALYSIS OF UNSTEADY EXTRUSION PROCESSES[J]. Acta Aeronautica et Astronautica Sinica, 1990, 11(1): 53-58 |
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| Authors: | Nanjing Aeronautical Institute Guo Yangmine |
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| Affiliation: | Nanjing Aeronautical Institute Guo Yangmine |
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| Abstract: | Error estimation, double mesh as well as fore-and-aft process program are applied in the rigid-viscous-plastic finite element simulation of tube unsteady extrusion. By error estimation, element can be reasonably divided. The double mesh includes analytical mesh and material mesh. The former is used in the finite element analysis, while the latter is used in the record of distortion history. The fore-and-aft process program is used in the input and output of data and computer mapping. In the results, analytical mesh, distorted material mesh and strain contours are mapped by computer. |
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| Keywords: | finite element method forming extrusion error es-timation double mesh. |
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