中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2014年
15期
1994-1998
,共5页
分形滑动接触模型%摩擦因数%双粗糙表面%黏着效应%界面剪切强度
分形滑動接觸模型%摩抆因數%雙粗糙錶麵%黏著效應%界麵剪切彊度
분형활동접촉모형%마찰인수%쌍조조표면%점착효응%계면전절강도
fractal sliding model%friction coefficient%double rough surface%adhesion%interfacial shear strength
采用 W飊M函数建立具有分形特征的三维双粗糙面接触模型,考虑了接触界面间的黏着效应,在滑动速度、法向载荷及界面剪切强度等参数变化下,运用有限元方法探讨了粗糙体在滑动过程中摩擦因数的变化情况。结果显示,滑动速度、法向载荷及界面剪切强度等参数对摩擦因数的变化有一定的影响,边界润滑工况下平均摩擦因数为0.28,无润滑工况下平均摩擦因数为0.713,最大界面剪切强度时的平均摩擦因数为0.73；随着界面剪切强度的减小、法向载荷的增大、滑动速度的增加,滑动摩擦因数有所减小。与相关文献结论或实验结果进行比较,证明了上述结果的正确性。分析结果可为摩擦学设计和摩擦材料的制备提供理论参考。
採用 W飊M函數建立具有分形特徵的三維雙粗糙麵接觸模型,攷慮瞭接觸界麵間的黏著效應,在滑動速度、法嚮載荷及界麵剪切彊度等參數變化下,運用有限元方法探討瞭粗糙體在滑動過程中摩抆因數的變化情況。結果顯示,滑動速度、法嚮載荷及界麵剪切彊度等參數對摩抆因數的變化有一定的影響,邊界潤滑工況下平均摩抆因數為0.28,無潤滑工況下平均摩抆因數為0.713,最大界麵剪切彊度時的平均摩抆因數為0.73；隨著界麵剪切彊度的減小、法嚮載荷的增大、滑動速度的增加,滑動摩抆因數有所減小。與相關文獻結論或實驗結果進行比較,證明瞭上述結果的正確性。分析結果可為摩抆學設計和摩抆材料的製備提供理論參攷。
채용 W표M함수건립구유분형특정적삼유쌍조조면접촉모형,고필료접촉계면간적점착효응,재활동속도、법향재하급계면전절강도등삼수변화하,운용유한원방법탐토료조조체재활동과정중마찰인수적변화정황。결과현시,활동속도、법향재하급계면전절강도등삼수대마찰인수적변화유일정적영향,변계윤활공황하평균마찰인수위0.28,무윤활공황하평균마찰인수위0.713,최대계면전절강도시적평균마찰인수위0.73；수착계면전절강도적감소、법향재하적증대、활동속도적증가,활동마찰인수유소감소。여상관문헌결론혹실험결과진행비교,증명료상술결과적정학성。분석결과가위마찰학설계화마찰재료적제비제공이론삼고。
A three-dimensional W-M fractal sliding model of double rough surfaces was estab-lished,and considering the factors which contained interface shear strength,sliding speed and normal load influenced the whole sliding process.The friction coefficient of sliding processes was analysed using the finite element analysis taking into account adhesion factors in the process of contact.The numerical results show that the average coefficient of friction is as 0.28 under the boundary-lubricate-d,the average coefficient of friction is as 0. 713 under the unlubricated interfaces,the average coeffi-cient of friction is as 0.73 under the max interfacial shear strength.With the decrease of the interface shear strength,the increase of normal load and the increase of sliding velocity,the average coefficient of friction is decreased.Compared with experimental results or related documents,it is concluded that the results are of rationality,these results also provide theoretical reference for the tribological design and preparation of friction materials.
