摘要
为研究淡水冰的动摩擦规律,通过不同材料的滑道对淡水冰与多种材料间的动摩擦因数进行了试验研究,分析了温度、正压力和滑动速度的改变对动摩擦因数的影响。试验结果表明:各因素对动摩擦因数的影响取决于接触材料的表面粗糙程度,不同的接触面其摩擦作用的机理不同,接触面较粗糙时,摩擦力取决于软接触材料的抗剪强度;接触面较光滑时,接触界面的水膜对动摩擦因数的增大起主导作用。冰与不同材料间的动摩擦因数的大小顺序为木板、混凝土、冰。
Based on tests carried out on sideways made of various materials, dynamic friction coefficients between freshwater ice and various materials were studied. The influences of temperature, positive pressure, and sliding velocity on the dynamic friction coefficient were analyzed. The test results show that the influences of temperature, positive pressure, and sliding velocity were mainly determined by the surface roughness of materials. Different contact areas have different friction mechanisms. For a rough touch area, friction is determined by the shear strength of soft material. The water film of the contact area plays a leading role in increasing the dynamic friction coefficient. The dynamic friction coefficient between freshwater ice and various materials followed the following order： plank, concrete, ice.
出处
《水利水电科技进展》
CSCD
北大核心
2012年第6期79-83,共5页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金(51079021)
大连理工大学海岸和近海工程国家重点实验室开放基金(LP0903)
黑龙江省水利厅科研开发项目(HSKY 2011-04)
关键词
淡水冰
抗剪强度
水膜
动摩擦因数
接触面
freshwater ice
shear strength
water film
dynamic friction coefficient
contact area
