Clutches and Brakes - Design and Selection by William C. Orthwein

By William C. Orthwein

Very easily collecting a number of formulation, analytical tools, and graphs for the layout and choice of a large choice of brakes and clutches within the car, plane, farming, and production industries, this convenient reference simplifies calculations, acquaints engineers with an expansive diversity of purposes, and assists within the collection of parameters for particular layout demanding situations.

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Extra resources for Clutches and Brakes - Design and Selection

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Band Brakes 19 FIGURE 2 Quantities and geometry used in the derivation of the band-brake design relations. ðF þ dFÞ sin du du þ F sin À pwr du ¼ 0 2 2 ð1-2Þ when the brake lining and the supporting brake band together are assumed to have negligible flexural rigidity, where A represents the coefficient of friction between the lining material and the drum, p represents the pressure between the drum and the lining, and w represents the width of the band. Upon simplifying equations (1-1) and (1-2) and remembering that as the element of band length approaches zero, sin(du/2) approaches du/2, cos(du/2) Copyright © 2004 Marcel Dekker, Inc.

Consistent with the direction of rotation of the drum, indicated by N, the forces acting on an element of the band are as illustrated in the lower right section of Figure 2. In this figure, r is the outer radius of the brake drum and F1 and F2 are the forces applied to the ends of the brake band. Because of the direction of drum rotation, F1 is greater than F2. Equilibrium of forces in directions parallel and perpendicular to the tangent to a typical brake-band element at its midpoint requires that ðF þ dFÞ cos Copyright © 2004 Marcel Dekker, Inc.

Reinsch, E. W. (1970). Friction and Antifriction Materials. In: Hausner, H. , Roll, K. , Johnson, P. , eds. Perspective in Powder Metallurgy. New York: Plenum Press. Reprinted from a paper by the same name and author in Progress in Powder Metallurgy, 1962, pp. 131–138. Tatarrzycki, E. , Webb, R. T. (1992). Friction and Wear of Aircraft Brakes. Vol. 18. 10th ed. ASM Handbook. Metals Park, OH: ASM International, pp. 527–582. Grayson, M. ed. (1983). Encyclopedia of Composite Materials and Components.

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