Four-wheel drive Jeep Cherokee 4L AMC 242 pulls a heavy load up the hill at speed v. Power is evenly distributed over all wheels. a) Calculate the torque on the shafts A, B and C. b) Calculate the shear stress τ and the safety factor nτ with respect to the yield on the axes A, B and C. c) Calculate the deflection θ on the axes A, B and CStarting values: ReL = 700 MPa E = 200 GPa ν = 0.3 P = 91 kW v = 50,4 km/h Drive shaft = 1.31 ”Drive shaft = 1.12” Drive shaft = 0.96 ” The first three numbers in a typical size (225/45R17) are the tire's indicated section width in millimeters, measured from sidewall to sidewall. The second pair of numbers (225/45R17) is the tire's aspect ratio. This percentage represents the ratio of sidewall’s section height to the tire’s section width. The section height can be calculated by multiplying the section width by the aspect ratio percentage. For example: 225mm x 0.45 = 101.3mm The last number (225/45R17) is the diameter of the wheel in inches. For example: 17" x 25.4 = 431.8mm To calculate the overall diameter of a tire, the sidewall height must be multiplied by 2 and add the diameter of the wheel. For example: 2*101.3mm + 431.8mm = 634.4mm
Four-wheel drive Jeep Cherokee 4L AMC 242 pulls a heavy load up the hill at speed v. Power is evenly distributed over all wheels. a) Calculate the torque on the shafts A, B and C. b) Calculate the shear stress τ and the safety factor nτ with respect to the yield on the axes A, B and C. c) Calculate the deflection θ on the axes A, B and CStarting values:
ReL = 700 MPa E = 200 GPa ν = 0.3 P = 91 kW v = 50,4 km/h Drive shaft = 1.31 ”Drive shaft = 1.12” Drive shaft = 0.96 ”
The first three numbers in a typical size (225/45R17) are the tire's indicated section width in millimeters, measured from sidewall to sidewall. The second pair of numbers (225/45R17) is the tire's aspect ratio. This percentage represents the ratio of sidewall’s section height to the tire’s section width. The section height can be calculated by multiplying the section width by the aspect ratio percentage. For example: 225mm x 0.45 = 101.3mm The last number (225/45R17) is the diameter of the wheel in inches. For example: 17" x 25.4 = 431.8mm To calculate the overall diameter of a tire, the sidewall height must be multiplied by 2 and add the diameter of the wheel. For example: 2*101.3mm + 431.8mm = 634.4mm
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