关于结合面接触刚度的微观仿真研究

对材料表面粗糙情况进行数值模拟及粗糙平面接触仿真识别结合面接触刚度,是表面的接触刚度特性研究中的基础和关键,工程应用前景广阔.实现方式是利用轮廓的算术平均偏差评定方式,在取样长度内,取轮廓偏距的绝对值算术平均值来形成凹凸峰,并取特殊的等腰三角形,考虑形状误差的影响,生成特定粗糙度粗糙曲面,并进行接触刚度仿真模拟,刻画出不同压力下的法向接触刚度,分析微观凹凸峰弹塑性对接触刚度的影响并与吉村允孝实验刚度曲线进行对比,并提出深入研究方向.

Microcosmic Simulation of Joint-surface Contact Stiffness

The numerical simulation on the material surface roughness condition and simulation of rough contact to identify the normal contact stiffness of joint surface are the foundations and the key of the contact surface stiffness characteristic research.The prospects of the engineering application is vast.In the sampling length for contour offset arithmetic average of the absolute value is to form a concave and convex peak, and to take special isosceles triangle, specific roughness of rough surface is strictly generated to impose a particular waviness and contact stiffness simulation, It portrays the normal contact stiffness under different pressure to analyze the influence of the elastoplasticity to the normal contact stiffness.And Masataka Yoshimura experiment data is used to compare.And further research direction is raised.