A Study of Reduction for Brake Squeal in Disc In-Plane Mode

2012 ◽  
Author(s):  
Tomohiro Yokoyama ◽  
Toru Matsushima ◽  
Noriyoshi Matsui ◽  
Ryutaro Misumi
Keyword(s):  
Brake Squeal ◽  
Plane Mode

High Frequency Brake Squeal Prediction Index for Disc In-plane Mode

2009 ◽  
Author(s):  
Sang-Don Joo ◽  
Ji-Hoon Han ◽  
Jeong-Tae Kim ◽  
Kyung-Hwan Park
Keyword(s):  
High Frequency ◽  
Brake Squeal ◽  
Plane Mode

Tribological and dynamical analysis of a brake pad with multiple blocks for a high-speed train

2019 ◽  
Vol 234 (11) ◽  
pp. 1771-1788
Author(s):  
YK Wu ◽  
JL Mo ◽  
B Tang ◽  
JW Xu ◽  
B Huang ◽  
...  
Keyword(s):  
High Speed ◽  
Wear Behavior ◽  
Dynamical Analysis ◽  
Brake Disc ◽  
Brake Pad ◽  
High Speed Train ◽  
Brake Squeal ◽  
Element Analysis ◽  
Single Block ◽  
Middle Ring

In this research, the tribological and dynamical characteristics of a brake pad with multiple blocks are investigated using experimental and numerical methods. A dynamometer with a multiblock brake pad configuration on a brake disc is developed and a series of drag-type tests are conducted to study the brake squeal and wear behavior of a high-speed train brake system. Finite element analysis is performed to derive physical explanations for the observed experimental phenomena. The experimental and numerical results show that the rotational speed and braking force have important influences on the brake squeal; the trends of the multiblock and single-block systems are different. In the multiblock brake pad, the different blocks exhibit significantly different magnitudes of contact stresses and vibration accelerations. The blocks located in the inner and outer rings have higher vibration acceleration amplitudes and stronger vibration energies than the blocks located in the middle ring.

scholarly journals Consecutive Vibrational Redistribution and Predissociation Processes in s-Tetrazine–Argon Van Der Waals Complexes

1983 ◽  
Vol 2 (3-4) ◽  
pp. 125-135 ◽  
Author(s):  
J. J. F. Ramaekers ◽  
L. B. Krijnen ◽  
H. J. Lips ◽  
J. Langelaar ◽  
R. P. H. Rettschnick
Keyword(s):  
Decay Time ◽  
Van Der Waals ◽  
Stagnation Pressure ◽  
Van Der Waals Complexes ◽  
Supersonic Expansion ◽  
Vibrational Predissociation ◽  
Out Of Plane ◽  
Spectrally Resolved ◽  
Plane Mode

s-Tetrazine argon complexes T−Arn (n = 1, 2) are formed in a supersonic expansion of argon seeded with s-tetrazine. The expansion was conducted through a nozzle of 50 or 100 μm with an argon stagnation pressure between 1 and 1.5 bar. From spectrally resolved measurements it is clear that vibrational redistribution processes as well as vibrational predissociation processes take place after SVL excitation within the complex.From rise and decay time experiments it can be concluded, that after excitation of the 6a1 complex level, the above mentioned processes are consecutive and not parallel. It appears that the out of plane mode 16a couples with the Van der Waals stretching mode. The predissociation rate of the 16a2 complex is observed to be 2.3 × 109 s−1.

A Study on Low-Frequency Brake Squeal Noise

1996 ◽  
Author(s):  
Ichiro Kido ◽  
Tuyoshi Kurahachi ◽  
Makoto Asai
Keyword(s):  
Low Frequency ◽  
Brake Squeal ◽  
Squeal Noise

scholarly journals Numerical methods for parametric model reduction in the simulation of disk brake squeal

2016 ◽  
Vol 96 (12) ◽  
pp. 1388-1405 ◽  
Author(s):  
Nils Gräbner ◽  
Volker Mehrmann ◽  
Sarosh Quraishi ◽  
Christian Schröder ◽  
Utz von Wagner
Keyword(s):  
Numerical Methods ◽  
Model Reduction ◽  
Parametric Model ◽  
Brake Squeal ◽  
Disk Brake
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