摘要
利用ABAQUS有限元仿真软件对超声波在含有人工反射体的金属工件中的传播和反射进行研究。采用空间上高斯分布、时间上汉宁窗调制的三周期正弦信号作为载荷,增加探头的发射能量和轴向分辨率,使得能量有效集中于主声束,减少旁瓣的影响。对工件大平底以及平底孔、横孔、V型槽等典型人工缺陷进行仿真计算和结果分析,显示出这种方法的可行性。
ABAQUS finite element simulation software was used to study the propagation and reflection of ultrasonic wave in metal workpieces with artificial reflector.The three-period sinusoidal signal with Hanning window modulation in time and Gaussian distribution in space was used as the load to increase the emission energy and axial resolution of the probe,so that the energy was effectively concentrated in the main acoustic beam and the influence of the side lobe was reduced.The simulation calculation and result analysis of block flat bottom(BFB)and typical artificial defects such as flat bottom hole(FBH),side drill hole(SDH)and V-groove indicated the feasibility of this method.
作者
陈昌华
陈新华
周通
汤志贵
施虹屹
闵明
CHEN Chang-hua;CHEN Xin-hua;ZHOU Tong;TANG Zhi-gui;SHI Hong-yi;MIN Ming(Technology Center,Nanjing Develop Advanced Manufacturing Co.,Ltd.,Nanjing 210048,China;Department of Mechanical Engineering,Beijing University of Technology,Beijing 100124,China;Technology Center,Masteel Stock Company,Ma'anshan 243000,China)
出处
《物理测试》
CAS
2020年第6期15-19,共5页
Physics Examination and Testing
关键词
超声波
人工缺陷
有限元
数值模拟
仿真
ultrasonic wave
artificial defect
finite element
numerical simulation
simulation
