田锦华;赵建博;王立忠;周宗杰;汪耀;

• 1:新疆大学机械工程学院
• 2:西安交通大学机械工程学院

摘要(Abstract)：

为了测量发动机盖在高速冲击情况下的变形,基于分体式双目高速相机标定方法的原理,提出一种适用于发动机盖在高速冲击情况下的变形精密测量方法.针对发动机盖在受到外界高速冲击过程中,发动机盖变形复杂导致难以测量其变形准确值的问题,设计一套实验装置并制作实验试样,在发动机盖的内侧喷涂数字散斑.实验试样发动机盖受到高速冲击产生变形,通过实验装置中的双目高速相机动态测量检测实验试样的变形并记录数据,得到单点应力应变曲线走向趋势图及应力应变场分布云图.实验结果表明,受冲击点变形量前期大幅上升至45.03 mm,后期产生波动最终趋于5.00 mm;受冲击点应变量大幅上升至0.92%后产生波动最终趋于0.78%,结果表明本文的测量方法在高速冲击变形的精密测量上的有效性.

关键词(KeyWords)： 高速冲击;变形场;标定方法;数字散斑;动态测量

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学地区基金（51865057）

作者(Authors): 田锦华;赵建博;王立忠;周宗杰;汪耀;

DOI: 10.13568/j.cnki.651094.651316.2019.04.13.0001

参考文献(References)：

• [1]王计真.预应力状态下复合材料板冲击响应数值方法研究[J].科学技术与工程,2017,17(4):25-31.WANG J Z.Research on numerical method of impact response of composite plate under prestressed state[J].Science Technology and Engineering,2017,17 (4):25-31.(in Chinese)
• [2]康进武,聂刚,喻海良,等.热处理过程大型铸钢件变形的三维动态测量[J].金属学报,2011,47(5):535-539.KANG J W,NIE G,YU H L,et al.Three-dimensional dynamic measurement of large steel casting deformation during heat treatment[J].Acta Metallurgica Sinica,2011,47 (5):535-539.(in Chinese)
• [3]RAN C,ZHONG W L,KAI Z,et al.Low-speed-camera-array-based high-speed three-dimensional deformation measurement method:Principle,validation,and application[J].Optics and Lasers in Engineering,2018,107:21-27.
• [4]孙轩,王雅萍,王博怀.数字图像相关法变形测量系统的研究与应用[J].机械设计与制造,2019(3):149-152+157.SUN X,WANG Y P,WANG B H.Research and application of digital Image correlation method for deformation measurement system[J].Mechanical Design&Manufacturing,2019(3):149-152+157.(in Chinese)
• [5]许仁超,周方艳,张启灿.基于双目视觉的数字散斑时空相关三维面形测量[J].激光杂志,2018,39(3):32-36.XU R C,ZHOU F Y,ZHANG Q C.Spatiotemporal correlative three-dimensional surface measurement of digital speckle based on binocular vision[J].Laser Magazine,2018,39(3):32-36.(in Chinese)
• [6]刘泽庆.靶场静爆炸实验测速高速相机标定方法[J].中国激光报,2016,53(11):227-235.LIU Z Q.Calibration method of high-speed camera in shooting range static explosion experiment[J].China Laser Journal,2016,(11):227-235.(in Chinese)
• [7]王林鹏.不同冲击速度下复合材料修补结构的失效分析研究[D].郑州:郑州大学,2016.WANG L P.Failure analysis of composite repair structures under different impact velocities[D].Zhengzhou:Zhengzhou University,2016.(in Chinese)
• [8]FU C,ZHONG F,HU L,et al.The calibration of high-speed camera imaging system for ELMs observation on east Tokamak[J].Plasma Science and Technology,2016,18(9):884-889.
• [9]韦争亮.基于彩色编码的结构光动态三维测量及重构技术研究[D].北京:清华大学,2009.WEI Z L.Research on dynamic 3D measurement and reconstruction of structured light based on color coding[D].Beijing:Tsinghua University,2009.(in Chinese)
• [10]EUGENE W,STEFAN H,CHRISTIAN B B,et al.Calibration of an array projector used for high-speed three-dimensional shape measurements using a single camera[J].Applied Optics,2018,57(26):7570-7578.
• [11]苏勇,张青川,伍小平.数字图像相关技术的一些进展[J].中国科学:物理学力学天文学,2018,48(9):29-53.SHU Y,ZHANG Q C,WU X P.Some advances in digital image correlation technology[J].Science in China:Physics,Mechanics,Astronomy,2018,48(9):29-53.(in Chinese)
• [12]KOMATSU M,KIRITANI M.High-speed impact deformation and evaluation of experimental parameters[J].Radiation Effects and Defects in Solids,2002,157(1-2):75-84.