摘要
论述了理论解析、数值模拟、回归分析、人工神经网络等多种焊缝形状的研究方法,采用多种预测方法结合将是较为理想的焊缝形状研究方案。在所获取的电子束焊缝截面上取一系列控制点,利用B样条曲线实现焊缝形状的参数化再现,分析了控制点参数与焊缝形状特征参数的关系,建立了焊接形状分类准则,获得了特征尺寸临界值,并将电子束焊缝分为漏斗型、钟罩型、楔型和钉型四类。
Many methods of studying typical character of electron beam welding （EBW） welds shape had been introduced, including experiments, theoretic analytics ,numerical simulation, Regression analysis and artificial neural network. The results showed it was reasonable scheme, which combined several methods to study welds shape. There were a lot of key points gained from weld figure, and pa- rameterize recurrence were achieved by B-spline curves to connect these points. The relationship between parameter for key point and that for weld shape were analyzed. The classifying criterion for EBW welds shape was build and the critical value for key dimension was obtained. Welds shape with EBW were classified as Funnel pattern, Bell pattern, Chock pattern and Nail pattern.
出处
《航空材料学报》
EI
CAS
CSCD
北大核心
2009年第2期53-56,共4页
Journal of Aeronautical Materials
关键词
电子束焊接
形状特征
几何控制点
参数化再现
分类准则
EBW
shape character
geometric keypoint
parameterize recurrence
classifying criterion
