The invention discloses a graphical method for calculating the unfolding length of an arc-shaped rubber vibration reduction connecting pipe, and the method comprises the steps: dividing a deformationsection and a fixed section of an arc-shaped flexible pipe body, generating a revolution surface of an arc-shaped line of the deformation section, constructing a space spiral line for simulating a cord fabric layer cord, and adjusting the number of turns of the spiral line, constructing a sweeping curved surface for simulating cord deformation during inflation deformation of a pipe body along a spiral line, and generating graphical processes such as a spatial intersection line of the revolving curved surface and the sweeping curved surface and the like; and through comparing the length of thespiral line of the deformation section winding cord before inflation molding of the connecting pipe with the length of the corresponding spatial curved line after inflation molding, judging whether the preliminarily assumed expansion length is proper. On the basis of drawing functions such as spiral line drawing, revolution surface drawing and swept surface drawing of CAD software, the curved surface intersection function of the CAD software is fully utilized, the complex problem of cord fabric space deformation of the arc-shaped rubber vibration reduction connecting pipe is solved into a simple CAD software operation process, and the problem of calculation of the unfolding length of the arc-shaped rubber vibration reduction connecting pipe is solved.
本发明公开了一种推算弧形橡胶减振接管展开长度的图解方法,该方法包括划分弧形挠性管体的变形段和固定段,生成变形段弧形线的回转曲面,构建模拟帘布层帘线的空间螺旋线,调整螺旋线的圈数,沿螺旋线构建模拟管体充气变形时帘线变形的扫掠曲面,生成上述回转曲面与扫掠曲面的空间交线等图解过程,通过比较接管充气成型前变形段缠绕帘线的螺旋线长度与充气成型后对应空间曲线的长度,来判别初步假定的展开长度是否合适。本发明以CAD软件的绘制螺旋线、回转曲面、扫掠曲面等绘图功能为基础,充分运用其曲面求交功能,将弧形橡胶减振接管的帘布层空间变形的复杂问题化解为简单的CAD软件操作过程,解决了弧形橡胶减振接管展开长度推算的问题。
Graphical method for calculating unfolding length of arc-shaped rubber vibration reduction connecting pipe
一种推算弧形橡胶减振接管展开长度的图解方法
23.02.2021
Patent
Elektronische Ressource
Chinesisch
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