Question

Solve in SI units.

A gear reduction unit uses the countershaft shown in the figure. Gear A receives power from another gear with the transmitted force FA applied at the 20ᵒ pressure angle as shown. The power is transmitted through the shaft and delivered through gear B through a transmitted force FB at the pressure angle shown. a) Determine the force FB, assuming the shaft is running at a constant speed. b) Find the magnitudes of the bearing reaction forces, assuming the bearings act as simple supports. c) Draw shear-force and bending moment diagrams for the shaft. If needed, make one set for the horizontal plane and another set for the vertical plane. d) At the point of maximum bending moment, determine the bending stress and the torsional shear stress. e) At the point of maximum bending moment, determine the principal stresses and the maximum shear stress.

400 mm 350 mm Fa 225 mm 200 30 mm dia. Gear A 500 mm dia. Gear B 200 mm dia. 20°

Answer 1

Answe The L aansnted forre fa amifed to the Presstae ane i zo a The force s is 30 Ces Cleo) 300 Rc 16.42b 173.12 st 2678.24-f

The bnding stess udasa Shea ster = 28.162 ks? てこ5.88 KBI