ISSN 3041-1815. Physicochemical Mechanics of Materials. 2026.
Volume 62, Issue 3
Study of specific features of friction and wear of the contact surfaces of the cam and flat pusher in vibration exciter with elastic coupling
Trush V. S. 
Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, Lviv, Ukraine. (https://ror.org/02jv3yx22)
Lviv Polytechnic National University, Lviv, Ukraine. (https://ror.org/0542q3127)
Kyrychuk V. V.
Lviv Polytechnic National University, Lviv, Ukraine. (https://ror.org/0542q3127)
Korendiy V. M.
Lviv Polytechnic National University, Lviv, Ukraine. (https://ror.org/0542q3127)
Kachur O. Yu.
Lviv Polytechnic National University, Lviv, Ukraine. (https://ror.org/0542q3127)
Nabochenko V. O.
Lviv Polytechnic National University, Lviv, Ukraine. (https://ror.org/0542q3127)
Uhryn L. S.
Lviv Polytechnic National University, Lviv, Ukraine. (https://ror.org/0542q3127)
Keywords
cam-driven vibration exciter, flat pusher, shock mode, normal contact force, contact stress, wear, durability.
Cite as
Trush V. S., Kyrychuk V. V., Korendiy V. M., Kachur O. Yu., Nabochenko V. O., and Uhryn L. S. Study of specific features of friction and wear of the contact surfaces of the cam and flat pusher in vibration exciter with elastic coupling. Physicochemical Mechanics of Materials. 2026. 62(3), 127-133.
Abstract
A tribological analysis of the contact interaction between a cam and a flat pusher in a cam-driven vibration exciter with an elastically attached oscillating mass is presented. The normal force was calculated as a function of the cam profile curvature radius, which is im¬portant for determining its pre-shock operating modes. Uneven cam wear was identified during rapid lift and drop sections. It is shown that the choice of spring preload prevents the flat pusher detachment from the cam surface.