计算力学学报2017，Vol.34Issue(3)：312-321,10.DOI:10.7511/jslx201703008
基于共轭梯度法和快速傅立叶变换的粗糙表面微动接触数值研究
A numerical analysis of fretting contact with rough surface based on conjugate gradient method and fast Fourier transform
摘要
Abstract
Most engineering surfaces are rough,therefore surface morphology and roughness play an important role in fretting contact.In the present study,the normal load is fixed as constant,while the tangential load varies during the contact process.First,an efficient fretting contact model is developed to simulate various rough surfaces,where normal and tangential tractions are obtained via conjugate gradient method (CGM) and Fast Fourier transform (FFT) algorithm is used to speed up the calculation of convolution.Second,fretting contact on a surface with a single asperity,sinusoidal wave and random roughness are analyzed.Results show that surface amplitude has an impact on tangential load-displacement curve and energy dissipation.The tangential displacement and energy dissipation increase with the increase of the amplitude of roughness.关键词
微动接触/粗糙表面/共轭梯度法/快速傅立叶变换/能量耗散Key words
fretting contact/rough surfaces/CGM/FFT/energy dissipation分类
机械制造引用本文复制引用
牛睿,万强,靳凡,王战江..基于共轭梯度法和快速傅立叶变换的粗糙表面微动接触数值研究[J].计算力学学报,2017,34(3):312-321,10.基金项目
中国工程物理研究院科学技术发展重点基金(2014A0203006) （2014A0203006）
中国工程物理研究院院长基金(201402073) （201402073）
重庆市基础与前沿研究计划(cstc2015jcyjA70008)资助项目. （cstc2015jcyjA70008）
