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基于硬度梯度的熱成形高強鋼彎曲性能研究
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國家自然科學基金重點資助項目（10932003、11272075）、高等學校博士學科點專項科研基金資助項目（20100041120017）和國家工信部04重大專項基金聯(lián)合資助項目（2011ZX04001-021）


Bending Behavior Based on Hardness Gradient for Hot Forming High Strength Steel
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    摘要:

    采用熱成形高強度鋼設(shè)計了不同厚度板料的三點彎曲試驗，得到了相關(guān)彎曲力學性能參數(shù)。實驗表明：熱成形高強度鋼的彎曲力學性能隨厚度的增加而增強，在厚度方向上硬度分布呈中間高、兩側(cè)低的梯度分布規(guī)律，形成了具有連續(xù)梯度分布的多層金屬復合材料?；诤穸确较蛴捕忍荻确植家?guī)律及硬度-強度對應(yīng)關(guān)系，建立了一種多層金屬復合材料的三點彎曲數(shù)值仿真模型，研究了熱成形板材在變梯度彎曲模型下更合理的數(shù)值模擬方法。

    Abstract:

    A three-point bending test of hot forming high strength steel specimens with different thickness was designed. The related mechanical parameters were obtained. The results indicated that the bending mechanical properties of hot forming specimens were strengthened with the increase of the thickness. The specimens which were based on different thickness had higher center hardness and lower surface hardness. Meanwhile, a multi-layer composite material was proposed with hardness gradient distribution in the direction of the thickness. Based on the hardness gradient and the hardness-strength corresponding to the relationship, a multi-layer gradient numerical simulation model of three-point bending was established, explored that the gradient material model was more rational for numerical simulation. 

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申國哲,李效文,盈亮,史棟勇,郭潤清,孟召煥.基于硬度梯度的熱成形高強鋼彎曲性能研究[J].農(nóng)業(yè)機械學報,2013,44(2):261-266. Shen Guozhe, Li Xiaowen, Ying Liang, Shi Dongyong, Guo Runqing, Meng Zhaohuan. Bending Behavior Based on Hardness Gradient for Hot Forming High Strength Steel[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(2):261-266.

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  • 在線發(fā)布日期: 2013-02-04
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