摘要
基于NURBS理论对发动机缸盖气道外壁进行构建,截取原气道截面线并偏移截面线,抓取偏移截面线节点建立B样条曲线,选取四条边界B样条曲线并定义内部控制曲线生成外壁曲面,合并外壁曲面实体化生成外壁实体。
An engine cylinder head air flue ektexine was constructed based on NURBS theory, which intereepted section line of the previous air flue and skewed the section line, and B-spline curve was built by snatching at pitch-point of the skewing seetion line. 4 boundaries Bspline curve was chosen, internal control curves were defined to form ektexine crowed surface, and then ektexine curved surfaces were combined in instantiation to form ektexine entity.
出处
《汽车零部件》
2011年第2期72-74,共3页
Automobile Parts
关键词
发动机
气道外壁
NURBS
构建
Engine
Air intake port ektexine
NURBS
Construction