摘要
为准确、快速获得最优冲压方向,提出了基于网格的汽车覆盖件冲压方向自动生成算法。建立了以冲压方向坐标分量为变量、初始接触面积最大、拉延深度最小、拉延深度各向均匀为目标函数的数学模型。以冲压方向与网格法线夹角不大于90°为冲压方向可行的判据,确定在单位球面上的冲压方向可行域。利用遗传算法优化目标函数,在可行域内自动获得最优冲压方向。该算法已应用于汽车覆盖件的生产,验证了算法的有效性。
To obtain optimal stamping direction accurately and rapidly,a mesh-based automatic algorithm of stamping direction for auto-panels was proposed.Mathematical model with objective functions such as taking coordinate component of stamping direction as variable,and maximization of initial contact area,minimization ＆amp; uniformity for different direction of draw depth was established.Feasible region of unit-sphere was defined by standard if angle between normals and stamping direction was less than 90°.Optimal stamping direction was obtained automatically by Genetic Algorithm （GA） in the region. Validity of stamping direction was verified by good stamping quality in auto- panel（s） production.
出处
《计算机集成制造系统》
EI
CSCD
北大核心
2009年第11期2199-2203,共5页
Computer Integrated Manufacturing Systems
基金
国家杰出青年科学基金资助项目(10125208
20000519)
国家汽车电子产业化重大专项资助项目(2004-2563)~~
关键词
网格
覆盖件
冲压方向
遗传算法
数学模型
mesh
panels
stamping direction
genetic algorithm
mathematical model
