# Brakes 2000 [automotive] by D. Barton, S. Earle

By D. Barton, S. Earle

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Now the axis x - x to which the moment of dislocation will be applied has to be oriented parallel to the averaged direction of these contour lines. 3 New geometries and their grade of efficiency With geometric shapes used in current series applications it sometimes happens that the brake pad tilts relative to the brake piston. This means that the contact area between brake piston and damping shim or gliding sheet reduces to an extended contact at three places. At these reduced contact areas the pressure becomes very high.

Vol. 178 Pt 1, pp 847-866, 1963-64. M. On the Interaction of a Two-Pin-Disc System with Reference to the Generation of Disc-Brake Squeal. SAE 780331, 1978. R.. Disc Brake Squeal. IMechE C38, 1976. C. Brake squeal - the influence of rotor geometry. IMechE 1993, 1993. [6] Hulten, J.. Drum Brake Squeal - A self-Exciting Mechanism with Constant Friction. SAE 932965, 1993. , Flint J. An assumed modes method approach to disc brake squeal analysis. SAE 1999-01-1335, 1999. , Timoshenko, S. Vibration Problems in Engineering.

Each part is given three degrees of freedom namely, vertical, horizontal and rotational, (y i ,, xi and qt) where i= 1,2 and 3. The mass of the pistons is assumed to be very small relative to other masses. Contact damping and stiffiiess are assumed between individual contacted components. The linear stiffness and damping are k1, to k5 and c1 to c5 respectively, and the rotary stiffiiess and damping are ktl to kt3 and ct1 to ct3 respectively. The excitation forces acting on the brake components are the piston forces Fp and the frictional forces Fl and F2.