The Design of a Constrained layer Damping Solution for Rail Car Brake Squeal
نویسندگان
چکیده
Brake squeal relating to the application of tread block brakes on rail cars can generate significant noise annoyance issues and presents a challenging problem due to the associated technical complexities as well as inherent design constraints. In this paper the phenomenon of brake squeal occurring on a rail vehicle is investigated using experimental techniques. The operational vibration response of the brake head is examined as is the modal characteristics of both the brake head and the wheel. A combination of analytical and finite element methods is then used to design a constrained layer damping treatment for the rail wheel to reduce the vibration response and hence reduce brake squeal noise. The design of the constrained layer damping treatment is validated by testing.
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