搜索结果: 1-9 共查到“机械工程 friction”相关记录9条 . 查询时间(0.062 秒)
Theoretical And Experimental Analys Of Plastic Deformation Heat For Pim-Ring Sliding System Under Dry Friction Conditions
Sliding Friction Plastic Deformation Frictional Heat
2009/10/15
In this study, a theoretical model which can ensure the calculation of plastic deformation heat occured at the worn surfaces due to the friction during sliding was established and the validity of the ...
The Variation of the Friction Coefficient in Pipe Connections Working Under Static and Dynamic Loads
Galling Time Dependent Friction Coefficient Lubrication
2009/10/14
The friction coecient and the galling process in metal to metal parts depend on many variables such as normal load, lubricant, roughness and design of the friction surfaces. Since developing a mathem...
Investigation of the Friction Coefficient in Smooth Open Channel Flows
Open channel energy loss friction factor
2009/10/14
In practical engineering, the friction coecient formulations developed for circular pipes are usually assumed to be valid for open channels and used in derivation of mathematical formulation. However...
Investigation of the Friction Behavior of the Zinc-Aluminum Based Commercial ZA-27 Journal Bearing
Zinc-aluminum alloy plain bearing friction lubrication
2009/10/13
The zinc-aluminum based ZA-27 alloy was produced by permanent mould casting. Using this alloy and bronze obtained from commercial sources, thin wall journal bearings were manufactured by machining. Th...
滚动轴承摩擦力矩的非线性特征（Nonlinear Characteristic of Rolling Element Bearing Friction Torque）
滚动轴承 摩擦力矩 时间序列
2009/5/22
以混沌理论为基础，通过试验研究滚动轴承摩擦力矩时间序列的非线性特征评估问题，为精确计算滚动轴承摩擦力矩的动态性能奠定基础。用关联维数标准差刻画摩擦力矩的不确定性，用关联维数均值描述摩擦力矩非线性特征的演变历程。研究表明，滚动轴承属于确定的非线性动力学系统，但其摩擦力矩呈现出明显的不确定性。随着转速的增加，滚动轴承摩擦力矩关联维数标准差与均值都呈现出非线性增大的趋势。
Effect of surface roughness on friction in cold forging
Tip test Friction measurement Surface roughness
2008/12/30
Purpose: Tip test has been developed to characterize the friction during cold forging process based on a linear
relationship between the maximum load and radial tip distance measured. In this previou...
Mechanical properties of friction stir butt-welded Al-5086 H32 plate
Friction stir welding Al-alloys Joint performance
2008/10/30
Findings: The experimental results indicated that the maximum tensile strength of the joints, which is about 75% that of the base plate, was obtained with a traverse speed of 200 mm/min at the tool ro...
Prediction of Friction Stir Welding Characteristic Using Neural Network
Friction stir welding Mechanical properties ANN
2008/9/30
An artificial neural network (ANN) model was developed for the analysis and simulation of the correlation between the
friction stir welding (FSW) parameters of aluminum (Al) plates and mechanical pro...
Friction welding of dissimilar metal joints with intermediate layers
Metallic alloys Friction welding
2007/4/30
Purpose: Metals such as titanium, vanadium, zirconium, niobium, molybdenum and also tantalum and tungsten must be protected at elevated temperatures from the effects of oxygen, nitrogen and hydrogen. ...