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

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Fund Project:

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

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    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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[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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History
  • Received:August 26,2019
  • Revised:December 26,2019
  • Adopted:January 03,2020
  • Online: June 05,2020
  • Published: