摘要
画法几何综合问题是教学的难点,要求学生具有较强的空间想象能力和空间逻辑思维能力。借助AutoCAD的三维图形功能,可将平面正投影图转化为空间三维图形,在三维空间进行分析、推理和求解,然后再返回二维作图,使解题过程概念清晰,可视性强。给出两个实例说明了这种解题方法的作图步骤和作图要点,可极大地帮助学生提高空间想象能力和空间逻辑思维能力。
How to solving comprehensive problems in descriptive geometry is always a difficult teaching point, because good abilities of graphic thinking and space logical thinking are required for the students. The orthograph can be transformed to the 3D graphics by using 3D functions in AutoCAD, thus all analysis and reasoning for the solution can be clearly visualized in 3D space, and then by baking to the 2D environment the solution can be easily made. Two examples are given to illustrate detailed drawing steps for solution-making, which can greatly enhance the students＇ spatial analysis abilities and is easy to master.
出处
《工程图学学报》
CSCD
北大核心
2008年第4期132-136,共5页
Journal of Engineering Graphics
关键词
工程图学
画法几何综合问题
计算机辅助求解
三维分析
engineering graphics
comprehensive problems in descriptive geometry
computer aided solution
3D analysis
