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Flow Behavior and Constitutive Model Using Piecewise Function of Strain for TC11 Alloy
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Flow Behavior and Constitutive Model Using Piecewise Function of Strain for TC11 Alloy
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Natural Science Foundation for Key Program of China (50735005, 50935007); Natural Science Foundation (50905145); National Basic Research Program of China (2010CB731701)

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    摘要:

    針對TC11鈦合金，提出了基于應(yīng)變分段的Arrhenius雙曲正弦模型，并進(jìn)行熱模擬壓縮試驗(yàn)，分析了TC11鈦合金高溫流變行為及流變參數(shù)對流變應(yīng)力的影響。采用分段函數(shù)的Arrhenius雙曲正弦方法，在不同應(yīng)變區(qū)域下求出不同的材料參數(shù)，得到了更為精確的本構(gòu)模型。對比試驗(yàn)結(jié)果表明，模型具有很高的精度，并對比了模擬結(jié)果，表明模型是可靠的。

    Abstract:

    For TC11 alloy, this paper presented a more accurate constitutive model based on Arrhenius-type hyperbolic sine method by the cubic piecewise function of strain. During this modeling, compression tests of thermal simulation were carried out firstly. The effect of the flow factors on material flow stress was analyzed secondly. On analysis of the test data, the cubic piecewise functions of strain were proposed to ensure the Arrhenius-type hyperbolic sine model of high precision. Comparison with test results shows that the model presented is with high precision and simulation testing proposed show that this model is reliable.

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崔軍輝,楊 合,孫志超,李宏偉,李智軍,沈昌武. Flow Behavior and Constitutive Model Using Piecewise Function of Strain for TC11 Alloy[J].稀有金屬材料與工程,2012,41(3):397~401.[Cui Junhui, Yang He, Sun Zhichao, Li Hongwei, Li Zhijun, Shen Changwu. Flow Behavior and Constitutive Model Using Piecewise Function of Strain for TC11 Alloy[J]. Rare Metal Materials and Engineering,2012,41(3):397~401.]
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  • 收稿日期:2011-03-21
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