| 超塑性充模胀形的有限元模拟 |
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| 引用本文： | 李园春,金菁,李森泉,吴诗.超塑性充模胀形的有限元模拟[J].材料研究学报,1997,11(4):375-380. |
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| 作者姓名： | 李园春 金菁 李森泉 吴诗 |
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| 作者单位： | [1]北京航空材料研究院 [2]西北工业大学 |
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| 基金项目： | 国家自然科学基金!19572056 |
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| 摘 要： | 以跟踪最大应变速率单元并使之维持最佳应变速率的方法确定超塑性充模胀形的最佳加压规范；用大变形刚粘塑性有限元法模拟了恒压和最佳加压规范下的超塑性充模胀形过程，并对比二者的结果，同时分析了ｍ值对胀形的影响。
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| 关 键 词： | 刚粘塑性 有限元 超塑性充模胀形 压力加工 |
| 收稿时间： | 1997-08-25 |
| 修稿时间： | 1997-08-25 |
FINITE ELEMENT SIMULATION OF SUPERPLASTIC BULGING WITH A DIE UNDER DIFFERENT PRESSURE MODES |
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| LI Yuanchun,JIN Jing LI Miaoquan,WU Shichun.FINITE ELEMENT SIMULATION OF SUPERPLASTIC BULGING WITH A DIE UNDER DIFFERENT PRESSURE MODES[J].Chinese Journal of Materials Research,1997,11(4):375-380. |
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| Authors: | LI Yuanchun JIN Jing LI Miaoquan WU Shichun |
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| Affiliation: | LI Yuanchun; JIN Jing (Beijing Institute of Aeronautical Materials)LI Miaoquan; WU Shichun (Northwestern Polytechnical University) |
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| Abstract: | The optimum pressure norm in superplastic bulging with a die is determined by tracing the element with the largest strain rate and maintaining the strain rate at the optimum value, and the bulging processes under two kinds of pressure modes including constant pressure and optimum pressure norm are simulated by using large rigid-viscoplastic finite element method (FEM). The numerical results of the two pressure modes are compared and the effects of the strain rate sensitivity index m on the bulging process is analysed simultaneously. |
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| Keywords: | the optimum pressure norm rigid-viscoplastic FEM superplastic bulging |
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