Consider a belt drive that transmits 10 kW of power between two parallel shafts. The center-to-center distance of the shafts is 2 m, and the speeds of the driving and driven shafts are 100 rpm and 240 rpm respectively. The radius of the smaller pulley is 300 mm and the coefficient of friction between the belt and the pulley is 0.2. The width of the belt is 150 mm and thickness of the belt is 12 mm. Determine the stress in the belt for an open belt drive and for a cross belt drive.

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A: Here,  is lead angle,  is pitch,  is mean thread diameter.

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Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.