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TA18鈦合金管材多行程皮爾格冷軋過程三維有限元模擬：I 理論解析、模型建立與驗(yàn)證
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中國博士后科學(xué)基金 (20100470260)；國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃 (2010CB735811)


Three-Dimensional FE Simulation of Multi-strokes Cold Pilgering of TA18 Titanium Alloy Tube: I Theoretical Analysis, Modeling and Validation
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    摘要:

    皮爾格冷軋技術(shù)制備的TA18鈦合金管材具有高比強(qiáng)度、冷加工性能好、織構(gòu)分布合理等優(yōu)異的綜合性能，在飛機(jī)和航天器液壓管路系統(tǒng)、石油勘探鉆桿中得到了廣泛的應(yīng)用。根據(jù)多行程皮爾格冷軋過程力學(xué)分析，獲得了成形過程的精確運(yùn)動(dòng)模式和管材應(yīng)力狀態(tài)。然后，基于有限元軟件ABAQUS/Explicit，建立了TA18鈦合金管材多行程皮爾格冷軋三維有限元模型，并解決了建模關(guān)鍵技術(shù)，包括：虛擬曲柄連桿機(jī)構(gòu)實(shí)現(xiàn)方法、多行程周期式運(yùn)動(dòng)控制方法、復(fù)雜模具幾何實(shí)體定義、滾動(dòng)與滑動(dòng)摩擦定義。利用能量守恒原理和實(shí)驗(yàn)驗(yàn)證了模型的可靠性，以及利用成形過程等效應(yīng)力和等效塑性應(yīng)變分布評(píng)估了模型。

    Abstract:

    TA18 titanium alloy tubes based on cold pilgering are widely used for the hydraulic system of airplanes and spacecrafts and drill pipes of oil exploration due to their high specific strength, good cold processability and reasonable texture distribution. In this study, according to the mechanical analysis of multi-strokes cold pilgering process, precision motion mode and stress state of the tube during the forming process were obtained. Furthermore, a three-dimensional FE model of multi-strokes cold pilgering of TA18 titanium alloy tube was developed in the FE software environment of ABAQUS/Explicit. Some key modeling techniques were proposed, including the implementation of virtual crank-connecting-link device, the control method of multi-strokes motion modes, the definition of complex geometric formation and the definition of rolling friction and sliding friction. The FE model was validated by energy conservation principle and experimental results, and evaluated by the distributions of equivalent stress and equivalent plastic strain during the forming process.

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黃 亮,徐 哲,代 春,惠松驍,葉文君,王 國,謝水生,李宏偉. TA18鈦合金管材多行程皮爾格冷軋過程三維有限元模擬：I 理論解析、模型建立與驗(yàn)證[J].稀有金屬材料與工程,2013,42(3):524~529.[Huang Liang, Xu Zhe, Dai Chun, Hui Songxiao, Ye Wenjun, Wang Guo, Xie Shuisheng, Li Hongwei. Three-Dimensional FE Simulation of Multi-strokes Cold Pilgering of TA18 Titanium Alloy Tube: I Theoretical Analysis, Modeling and Validation[J]. Rare Metal Materials and Engineering,2013,42(3):524~529.]
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  • 收稿日期:2012-03-21
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