| 材料参数及静水压力对孔洞敏感材料超塑胀形影响的数值分析 |
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| 引用本文： | 谭红,连建设.材料参数及静水压力对孔洞敏感材料超塑胀形影响的数值分析[J].宇航材料工艺,1997,27(5):43-45. |
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| 作者姓名： | 谭红 连建设 |
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| 作者单位： | 吉林工业大学材料工程学院!长春，130025，吉林工业大学材料工程学院!长春，130025，吉林工业大学材料工程学院!长春，130025 |
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| 摘 要： | 本文将变形损伤效应引入到基于超塑成形的微观机理推导出的超塑性本构方程中，并将本构方程应用于刚塑性有限元模拟程序，分析了板料超塑胀形过程，研究了应变速率敏感性、孔洞长大以及叠加静水压力对孔洞敏感材料超塑胀形极限的影响，对模拟结果与实验结果进行了比较。
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| 关 键 词： | 超塑性材料 变形损伤 孔洞 静水压力 胀形 |
Numerical Analysis of the Effects of Material Parameters and Hydrostatic Pressure on Superplastic Bulging of Cavity-sensitive Materials |
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| Tan Hong,Dan Jianshe,Hu Ping.Numerical Analysis of the Effects of Material Parameters and Hydrostatic Pressure on Superplastic Bulging of Cavity-sensitive Materials[J].Aerospace Materials & Technology,1997,27(5):43-45. |
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| Authors: | Tan Hong Dan Jianshe Hu Ping |
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| Institution: | Department of Materials Engineering Jilin University of Technology Changchun 130025 |
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| Abstract: | In this paper, a constitutive equation for superplasticity, based on the microstructural mechanism of su-perplastic forming including the effect of deformation damage has been introduced into the finite element program to simu-late superplastic bulging process. The influence of strain rae sensitivity, cavity growth and superimposed hythetatic pressme on the strain limit have been studied. Theoretically calculated results are in agreement with the experimental re-sults. |
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| Keywords: | Superplasticity Deformation damage Cavity Hydrostatic pressure |
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