Mechanism Analysis of a Low-Frequency Disc Brake Squeal Based on an Energy Feed-In Method for a Dual Coupling Subsystem

Table 5

Feed-in energy of the dual coupling subsystem near 4000 Hz.

Pressure (MPa)	Frequency (Hz)	Real part	Coupling system	Energy (N/m)
0.2	3972.1	105.13	Piston-caliper	232.67
			Disc-plate	179.49
0.4	3985.0	61.106	Piston-caliper	155.99
			Disc-plate	135.76
0.6	3983.3	56.060	Piston-caliper	164.12
			Disc-plate	130.18
0.8	3982.6	55.306	Piston-caliper	154.57
			Disc-plate	133.30
1.0	3982.0	55.654	Piston-caliper	147.25
			Disc-plate	123.55
1.2	3982.0	55.765	Piston-caliper	147.48
			Disc-plate	125.15
1.4	3982.1	55.986	Piston-caliper	147.63
			Disc-plate	126.18