| TC4复杂盒形件超塑胀形加载曲线优化控制 |
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| 引用本文： | 黄锐.TC4复杂盒形件超塑胀形加载曲线优化控制[J].南京航空航天大学学报,2010,42(1). |
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| 作者姓名： | 黄锐 |
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| 作者单位： | 成都飞机工业有限责任公司,成都,610092 |
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| 摘 要： | 改进了商用有限元软件MARC的默认加载算法,超塑成形过程中改进的加载算法控制零件上应变速率最高的20个单元的平均值。对复杂形状的TC4盒形件超塑性成形过程进行了有限元模拟,获得了优化的压力p-时间t加载曲线和超塑成形零件的壁厚分布。根据加载曲线,进行了超塑成形实验,结果表明:模拟值与实验值吻合良好,且优化的加载曲线改善了成形零件的壁厚均匀性。
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| 关 键 词： | 超塑成形 加载算法 加载曲线 有限元模拟 |
Optimization of Pressure Cycle for Superplastic Forming of Complex TC4 Box-Shaped Part |
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| Huang Rui.Optimization of Pressure Cycle for Superplastic Forming of Complex TC4 Box-Shaped Part[J].Journal of Nanjing University of Aeronautics & Astronautics,2010,42(1). |
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| Authors: | Huang Rui |
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| Institution: | Chengdu Aircraft Company/a>;Chengdu/a>;610092/a>;China |
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| Abstract: | The default pressure control algorithm for commercial software MARC is improved.The improved algorithm can limit the deformation rate based on the average strain rate of the elements with the 20 highest strain rates in superplastic forming.Pressure cycles are obtained and the finite element analysis is performed for a complex TC4 box-shaped part.The complex TC4 box-shaped parts are manufactured.The predicted profile is in agreement with that of the strain rate control algorithm and the measured thickness di... |
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| Keywords: | superplastic forming pressure-control algorithm pressure cycle finite element simulation |
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