尹德军,郑 坚,熊 超,殷军辉,李宝晨,席 涛.考虑应变率效应的新型轻量化迫击炮座钣有限元分析[J].稀有金属材料与工程,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.]
考虑应变率效应的新型轻量化迫击炮座钣有限元分析
投稿时间:2019-08-26  修订日期:2019-12-26
中文关键词:  迫击炮座钣  钛合金  应变率效应  本构模型  有限元分析
基金项目:Military key task project of China (Grant No. MS201507A0132).
中文摘要:
      室温条件下,采用INSTRON实验机和分离式Hopkinson压杆(SHPB)实验装置对TC4钛合金进行压缩实验,得到了不同应变率下的真应力-真应变曲线。通过对应力-应变曲线拟合分析,建立了TC4钛合金的Johnson-Cook(JC)本构模型。基于该本构模型,采用ABAQUS对TC4钛合金高应变率下的冲击压缩实验进行了数值模拟,通过实验结果与仿真数据的对比分析,验证了该本构模型参数的正确性。为实现迫击炮轻量化的目标,设计了一种新型轻量化钛合金质迫击炮座钣。通过建立冲击载荷下迫击炮座钣的有限元模型,考虑材料的应变率效应,对座钣的强度和刚度进行了分析,得到了座钣的应力和位移的变化规律。本文的研究结果为迫击炮座钣及其它装备结构的轻量化设计与开发提供了借鉴。
Finite Element Analysis on New-Style Lightweight Mortar Base Considering Strain Rate Effect
英文关键词:mortar base plate  TC4 alloy  strain rate effect  constitutive model  finite element analysis
英文摘要:
      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.
作者单位E-mail
尹德军 陆军工程大学石家庄校区 火炮工程系 3500560897@qq.com 
郑 坚 陆军工程大学石家庄校区 火炮工程系  
熊 超 陆军工程大学石家庄校区 火炮工程系  
殷军辉 陆军工程大学石家庄校区 火炮工程系  
李宝晨 陆军工程大学 科研学术处  
席 涛 山东英特力新材料有限公司  
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