具有指定支承率曲线的粗糙表面建模方法

Rough surface modeling on specific bearing curves

针对摩擦学研究对建立具有指定功能参数粗糙表面三维几何模型的需求,基于灰度图像直方图规定化的基本理论,进行了具有指定支承率曲线粗糙表面的建模研究.采用直接计算高于某高度采样点数与总采样点数之比的方法,简化了表面支承率的计算;基于量化方法,实现了粗糙表面高度值与图像灰度值的转换,增加量化等级可满足任意的精度要求;基于灰度图像直方图的规定化方法,调整待处理表面的支承率曲线,可实现具有指定支承率曲线的粗糙表面建模.

In order to meet the increasing tribological demands on 3D geometric modeling for rough surfaces with specific functional parameters,a model with specific bearing curves is established based on the histogram specifications of gray level images.By employing the ratio of height-excess over total sampling numbers,the surface bearing ratio is simplified.To ensure the random precision with more quantification levels,the rough surface height and image gray level of the corresponding image can be converted.With revision of specific bearing curves,this approach paves a new venue for rough surface modeling.