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考慮應(yīng)變率效應(yīng)的新型輕量化迫擊炮座鈑有限元分析
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作者單位:

1.陸軍工程大學(xué)石家莊校區(qū) 火炮工程系;2.陸軍工程大學(xué) 科研學(xué)術(shù)處;3.山東英特力新材料有限公司

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基金項(xiàng)目:

Military key task project of China (Grant No. MS201507A0132).


Finite Element Analysis on New-Style Lightweight Mortar Base Considering Strain Rate Effect
Author:
Affiliation:

1.Department of Artillery Engineering,Army Engineering University;2.Office of Research and Development,Army Engineering University;3.Shandong Intelligent New Materials Co,Ltd Jining

Fund Project:

Military key task project of China (Grant No. MS201507A0132).

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    摘要:

    室溫條件下,采用INSTRON實(shí)驗(yàn)機(jī)和分離式Hopkinson壓桿(SHPB)實(shí)驗(yàn)裝置對(duì)TC4鈦合金進(jìn)行壓縮實(shí)驗(yàn),得到了不同應(yīng)變率下的真應(yīng)力-真應(yīng)變曲線。通過(guò)對(duì)應(yīng)力-應(yīng)變曲線擬合分析,建立了TC4鈦合金的Johnson-Cook(JC)本構(gòu)模型。基于該本構(gòu)模型,采用ABAQUS對(duì)TC4鈦合金高應(yīng)變率下的沖擊壓縮實(shí)驗(yàn)進(jìn)行了數(shù)值模擬,通過(guò)實(shí)驗(yàn)結(jié)果與仿真數(shù)據(jù)的對(duì)比分析,驗(yàn)證了該本構(gòu)模型參數(shù)的正確性。為實(shí)現(xiàn)迫擊炮輕量化的目標(biāo),設(shè)計(jì)了一種新型輕量化鈦合金質(zhì)迫擊炮座鈑。通過(guò)建立沖擊載荷下迫擊炮座鈑的有限元模型,考慮材料的應(yīng)變率效應(yīng),對(duì)座鈑的強(qiáng)度和剛度進(jìn)行了分析,得到了座鈑的應(yīng)力和位移的變化規(guī)律。本文的研究結(jié)果為迫擊炮座鈑及其它裝備結(jié)構(gòu)的輕量化設(shè)計(jì)與開(kāi)發(fā)提供了借鑒。

    Abstract:

    The compressive true stress-true strain curves of TC4 alloy with different strain rates at room temperature were investigated by the INSTRON test machine and split Hopkinson pressure bar (SHPB) device. Johnson-Cook (JC) constitutive model of TC4 alloy was established by fitting the experimentally obtained stress-strain curves. Based on the constitutive model, the impact compression experiment of TC4 alloy at high strain rate was simulated by ABAQUS. The correctness of the parameters for the constitutive model was verified by comparing the experimental results with the simulation data. In order to achieve the goal of lightweight of the mortar, a new lightweight titanium alloy mortar base plate was designed. The finite element model of the mortar base plate under impact load was established considering the strain rate effect of TC4 alloy. The strength and stiffness of the base plate were analyzed, and the variation law of the stress and displacement of the base plate was obtained. The research results of this paper provide a reference for lightweight design and development of the base plate and other equipment structures.

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尹德軍,鄭 堅(jiān),熊 超,殷軍輝,李寶晨,席 濤.考慮應(yīng)變率效應(yīng)的新型輕量化迫擊炮座鈑有限元分析[J].稀有金屬材料與工程,2020,49(5):1491~1495.[YIN Dejun, ZHENG Jian, XIONG Chao, YIN Junhui, LI Baochen, XI Tao. Finite Element Analysis on New-Style Lightweight Mortar Base Considering Strain Rate Effect[J]. Rare Metal Materials and Engineering,2020,49(5):1491~1495.]
DOI：10.12442/j. issn.1002-185X. E20190100

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  • 收稿日期:2019-08-26
  • 最后修改日期:2019-12-26
  • 錄用日期:2020-01-03
  • 在線發(fā)布日期: 2020-06-05
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