| 精铸涡轮叶片蜡模模具型面优化设计方法 |
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| 引用本文： | 董一巍,卜昆,窦杨青,张定华.精铸涡轮叶片蜡模模具型面优化设计方法[J].中国有色金属学会会刊,2011(2):378-387. |
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| 作者姓名： | 董一巍 卜昆 窦杨青 张定华 |
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| 作者单位： | 西北工业大学现代设计与集成制造技术教育部重点实验室; |
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| 基金项目： | Project (2008ZE53042) supported by National Aerospace Science Foundation of China |
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| 摘 要： | 提出一种基于有限元法的精铸涡轮叶片蜡模模具型腔优化设计方法。首先,计算出涡轮叶片在凝固和冷却过程中的非均匀、非线性收缩变形量;然后,基于本文提出的位移场反向迭代算法,确定优化的蜡模模具型腔。以A356合金涡轮叶片为例,采用提出的涡轮叶片模具型腔优化设计系统,经过精度评估,尺寸误差得到了大幅度降低。数值模拟与实验结果吻合良好,经过4次迭代优化,涡轮叶片的总体形状误差从0.515815mm降低至0.001978mm。
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| 关 键 词： | 涡轮叶片 数值模拟 位移场 蜡模模具型面 熔模精铸 |
Determination of wax pattern die profile for investment casting of turbine blades |
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| DONG Yi-wei, BU Kun, DOU Yang-qing, ZHANG Ding-hua.Determination of wax pattern die profile for investment casting of turbine blades[J].Transactions of Nonferrous Metals Society of China,2011(2):378-387. |
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| Authors: | DONG Yi-wei BU Kun DOU Yang-qing ZHANG Ding-hua |
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| Affiliation: | Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, China |
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| Abstract: | In order to conform to dimensional tolerances, an efficient numerical method, displacement iterative compensation method, based on finite element methodology (FEM) was presented for the wax pattern die profile design of turbine blades. Casting shrinkages at different positions of the blade which was considered nonlinear thermo-mechanical casting deformations were calculated. Based on the displacement iterative compensation method proposed, the optimized wax pattern die profile can be established. For a A356... |
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| Keywords: | turbine blade numerical simulation displacement field wax pattern die profile investment casting |
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