材料摩擦轮廓曲线分形特征的计算机模拟与计算  

Simulation and Calculation of Fractal Properties for Friction Curve

作　　者：蒋渝[1] 杨彦明[1] 管登高[1] 陈家钊[1] 涂铭旌[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610065

出　　处：《四川大学学报（工程科学版）》2004年第1期61-64,共4页Journal of Sichuan University (Engineering Science Edition)

摘　　要：研究了摩擦轮廓曲线分形数学特征,在图象变换基础上用"覆盖-逼近"混合算法开发了分形性质分析的软件模拟与特征分数维计算系统;进行了标准Coch分形曲线的高次迭代,迭代次数为10时采样点达26万,满足精度要求,并以此标定和检验分数维计算系统;验证了分形结构层次大于18时分数维数值接近内禀特征值,且测量码尺在合理范围内测得的有限层次分形体分数维才是确定值。The arithmetic about fractal properties for friction curve was studied. Based on the counterchanging technology for image, a set of system to simulate the fractal properties and calculate the fractal characteristic value was developed. The high-level Coch Curve was simulated. It is verified that the fractal value will be close to the intrinsic one when hiberarchy is bigger than 18 and measure scale should be in reasonable scope.

关 键 词：摩擦轮廓曲线 图象分析 软件模拟 分形特征 计算机模拟 分数维 

分 类 号：TH117.1[机械工程—机械设计及理论] TP391.41[自动化与计算机技术—计算机应用技术]