Method for monitoring influence of reciprocating equipment cylinder sleeve friction force on shafting torsional vibration
A shafting torsional vibration and friction technology, applied in internal combustion engine testing and other directions, can solve the problems of no research on forced vibration, no consideration of the influence of friction on the inherent characteristics of the system, and limited public literature.
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[0026] The following examples describe the present invention in more detail.
[0027] Step 1: Calculate the natural frequency of the torsional vibration of the shafting.
[0028] The frequency and formation of the torsional vibration of the system shafting are calculated by the method of transfer matrix.
[0029] Step 2: Test the natural frequency of the torsional vibration of the shaft system under different lubrication conditions through the LMS acquisition instrument;
[0030] By controlling the supply of lubricating oil, the lubrication state of the piston ring and cylinder liner is gradually changed, from rich oil lubrication to lean oil lubrication, and then to dry friction, so that the friction between the piston ring and cylinder liner continues to increase. After stabilization, the natural frequency of the torsional vibration of the shafting is obtained by testing the LMS acquisition instrument, using the magnetoelectric sensor, and adopting the method of raising and...
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