On circular curved line coordinate and its layout method 解析圓曲線坐標(biāo)及其放樣方法
Setting out circular curve with the offset of arbitrary direction line method 任意方向線支距法測設(shè)圓曲線
Circular curve data 圓曲線要素
The analysis of broaden , tapered length relation and tapered formula of inter road surface of circular curve 圓曲線內(nèi)路面變寬與漸變長度關(guān)系及漸變式分析
This shows that their knowledge of the circle enabled them to calculate the coordinates along this vertical curve . accordingly , the construction workers followed precise dimensions in their executed circular curves 這表明他們的圓周知識使他們能夠計算沿這個直立的曲線的坐標(biāo)。因此建筑工人按照精確的尺寸用于完成圓周曲線。
In this system the non - circular curve is fittd by twin arc spline curves 、 b - spline curve and nurbs - curve . moreover , the difference handle means is adopted by that difference generating way among the autocad2005 對于零件常用的非圓曲線,采用雙圓弧樣條曲線、 b樣條曲線、 nurbs曲線來擬合,并根據(jù)它們在autocad2005中生成的方式不同而采用不同的方法來處理。
The relation of radius of curvature and error as well as formulas of increasing parameters on condition of constant error are diverted . the equation of the line on the center of approximate circular arc is obtained , and it can avoids the trouble that numerical solution owns possibility of no convergence and simplifies node calculation of non - circular curve 導(dǎo)出了曲率半徑與逼近誤差之間的關(guān)系和等誤差條件下的參數(shù)遞推公式,建立了通過逼近圓弧圓心的直線方程和圓心坐標(biāo)計算公式.按這種方法用圓弧逼近平面參數(shù)曲線,不需要求解非線性方程組,避免了計算可能不收斂的麻煩,簡化了非圓曲線的節(jié)點計算過程