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| NiTi合金线材无模拉拔加工过程热力耦合数值模拟 | |
| 引用本文： | 毕重武, 何勇, 刘雪峰, 谢建新. NiTi合金线材无模拉拔加工过程热力耦合数值模拟[J]. 工程科学学报, 2008, 30(11): 1249-1254. DOI: 10.13374/j.issn1001-053x.2008.11.013 |
| 作者姓名： | 毕重武 何勇 刘雪峰 谢建新 |
| 作者单位： | 1.北京科技大学材料科学与工程学院, 北京 100083 |
| 摘 要： | 结合所研制的连续式无模拉拔加工设备的实际情况,利用DEFORM有限元软件建立了加工过程的热力耦合有限元分析模型,开展了NiTi合金线材无模拉拔加工过程的热力耦合模拟研究,获得了线材无模拉拔加工过程的温度场和应力场的分布规律,以及冷热源距离、冷却水流量及拉拔速度对成品线径的影响规律.通过实验验证了模拟结果的正确性. |
| 关 键 词： | NITI合金 无模拉拔 热力耦合 数值模拟 |
| 收稿时间： | 2007-11-23 |
| 修稿时间： | 2008-01-14 |
Thermo-mechanical coupling analysis in the dieless drawing process of NiTi shape memory alloy wires |
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| BI Zhongwu, HE Yong, LIU Xuefeng, XIE Jianxin. Thermo-mechanical coupling analysis in the dieless drawing process of NiTi shape memory alloy wires[J]. Chinese Journal of Engineering, 2008, 30(11): 1249-1254. DOI: 10.13374/j.issn1001-053x.2008.11.013 | |
| Authors: | BI Zhongwu HE Yong LIU Xuefeng XIE Jianxin |
| Affiliation: | 1.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
| Abstract: | A thermo-mechanical finite element model was established for the developed continuous dieless drawing process equipment by using DEFORM finite element software. The temperature field and stress field in the continuous dieless drawing process of NiTi shape memory alloy wires were analyzed through the thermo-mechanical coupling simulation. The effects of distance between heater and cooler, cooling water flow-rate and drawing speed on the diameter of wires were investigated. The results were well consistent with the experimental ones. |
| Keywords: | NiTi alloy dieless drawing thermo-mechanical coupling numerical simulation |
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