Friction and wear test system and friction and wear test method

A friction and wear test method, wherein during a test, a rotating shaft is utilized to drive a dynamic specimen to rotate, and a first static specimen and a second static specimen that are directly opposite each other in an axial direction of the rotating shaft are utilized to clamp the dynamic specimen, the first static specimen is applied with a preset loading force F1 pointing at the dynamic specimen by a first loading module, the second static specimen is applied with a preset loading force F2 pointing at the dynamic specimen by a second loading module, and the preset loading forces applied by the first loading module and the second loading module mutually counterbalance at least a portion thereof;

• wherein when the rotating shaft extends horizontally, a friction coefficient is calculated as
• μ
• =
• T
• R
• ⁢
• F
• ,
• where:
• T is a torque of the rotating shaft, F is a sum of contact forces between each static specimen and the dynamic specimen, R is a distance from a center of an annular friction surface where any of the static specimen contacts the dynamic specimen to an axis of the dynamic specimen;
• when the rotating shaft does not extend horizontally, the friction coefficient is calculated as
• μ
• =
• T
• -
• T
• 0
• R
• ⁢
• F
• ,
• where:
• T0 is a torque of the rotating shaft measured by a speed-torque sensor when F is 0;
• when conducting friction and wear tests under non-lubricated working conditions, F=F1+F2;
• when conducting friction and wear tests under non-lubricated working conditions, a lubricating oil supply module is utilized to provide lubricating oil with a preset pressure to the static specimen, F=F1+F2−F3−F4, where:
• F3 and F4 are forces applied to the static specimen by the lubricating oil located between each of the static specimen and the dynamic specimen.