Problem 01.061- A two link assembly with point loads Two horizontal 13-kip forces (P) are applied to pin 8 of the assembly shown. A 0.8-in. diameter pin is used at each connection. 03 m.
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- Problem 1 only, solve carefully, include the units and dra the diagram. Thanks! . A taper pin is used to fix a lever to a shaft, if it is to transmit a maximum torque of 850 in-lb. The shaft diameter is 1.75inches and has an ultimate stress of 60,000 psi, if the factor of safety is 3, findA. Force that will shear the pin, kNB. Shear pin diameter, mmQ2/ A 3/4in-16 UNF SAE grade 5 bolt is subjected to a load of 8 kip in a tension joint. The initial bolt tension is F 30 kip. The bolt and joint stiffness's are kb=8 & km=15Mlbf/in, respectively. a) Determine the preload and service load stresses in the bolt. Compare the to the SAE minimum proof strength of the bolt. b) Specify the torque necessary to develop the preload.Mechanical design The maximum load in a rotating shaft is subjected to bending moment of 1 kN.m and a torque of 1 kN.m. The member is made of steel the Ultimate Tensile Strength 440 MPa, Yield Tensile Strength 370 MPa. With a safety factor of 4, kt = km = 1.5 and keyway stress consternation is presented. According to the maximum shear stress theory, the shaft diameter will be: a. 160 mm b. 74 mm C. 145 mm d. 92.5 mm e. 60 mm f. 66 mm
- 3. Calculate the bearing stress and shear stress between the pin and each bracket of a clevis joint. Assume pin diameter of 10 mm, 40 mm wide gap link, 12 mm thick bracket, and 3550N tensile load. Draw a free body diagram (geometry & forces) Identify stress plane Calculate stress and write it (with appropriate units) in the outlined boxHOW TO SOLVE: Draw the FBD of one member Solve for the bearing force. Section one bold and solve internal forces. Solve for the normal and shear stress in the bolts. Solve for the bearing stress in the members due to the nuts. Solve for the bearing stress in the members due to bolts. ANSWERS: bearing stress of bolt= 7.96 MPa, T; shear stress of bolt= 13.78 MPa; bearing stress (max)= 18.04 MPaQUA four stroke internal combustion engine has the following specifications: Brake power 7.5 kW; Speed 1000 r.p.m.; Indicated mean effective pressure 0.35 N/mm2; Maximum gas pressure 3.5 N/mm2; Mechanical efficiency - 80 %. Determine: 1. The dimesions of the cylinder, if the length of stroke is 1.4 times the bore of the cylinder: 2. Wall thickness of the cylinder, if the hoop stress is 35 MPa: 3. Thickness of the cylinder head and the size of studs when the permissible stresses for the cylinder head and stud materials are 45 MPa and 65 MPa respectively. Any other data required for the design may be assumed.
- Q1: Find the Diameter of the shaft macle of A cold-drawn steel. Assume hat ultimate stress is 370 MPa and the factor of the safety is 3. For pulley A consider 250 Dia. the loose belt tension is 15 percent of the tension on the tight side. *All dimensions units are in mm. 300 Tz A 400 T₂ 50 N. 270 N. 45° 150. 300 Dia. T P x 60 2 KN T = (T₁ - T₂) Rc Tw M z 16 + T² xxx d³Draw FBD and determine Stress and Safety Factor of Bicycle Axle (Thru Axel) Specification Weight of cyclist = 120 kg. Materials: Aluminum alloy (AL 6061-T6) Dimension: Length = 122 mm, Diameter = 12 mm, Thread pitch = 1.75 mm, Thread Length = 16 mm.Design a flanged coupling that will be able to carry power of 1,500 HP using a factor of safety of 3.3 at 630 rpm. The shaft diameters of the equipment the coupling will connect are both 5 inches. Check your design for the following stresses if N = 3.3 is satisfied: 1. Bolt shearing; 2. Bolt bearing; 3. Shearing of hub from coupling flange; 4. Shear on key; 5. Compression on key; Select dimensions whichever is higher. 6. Calculate also minimum length of engagement of the bolt and nut if these are of the same material. 5 inch dia. shafts coupling to connect the equipment shafts. Note: use 4 bolts only Instructions:
- * Problem-based learning - Acquire enhanced problem-solving skills using critical thinking Two shaft 40 mm of diameter are connected by a flanged coupling. The flanges are fitted with 8 bolts on 140 mm bolt circle. The shafts transmit a torque of 900 N-m at 350 r.p.m. For the safe stresses mentioned below, calculate 1. diameter of bolts ; 2. thickness of flanges ; 3. key dimensions ; 4. hub length; and 5. power transmitted. Safe shear stress for shaft material = 63 MPa Safe stress for bolt material = 56 MPa Safe stress for cast iron coupling = 10 MPa Safe stress for key material = 46 MPa A belt 100 mm wide and 10 mm thick is transmitting power at 1000 rev/min while the large pulley rotates , The larger pulley diameter is 1 .8 times the smaller pulley which having 250 mm diameter. Calculate the maximum power that can be transmitted. When the distance between the two pulleys are 4 mestion 9 P 62.5 mm Key 55° The cast iron block with cross-sectional dimensions of 62.5 mm by 62.5 mm consists of two pieces. The pieces are prevented from sliding along the 55° inclined joint by the steel key, which is 62.5 mm long. The working stresses are 275 MPa for cast iron in bearing and 345 MPa for the key in shear. If the block is loaded with P = 272 kN, calculate the required dimension "b" of the key. Write your final answer in 2 decimal places with the unit of mm.The cylinder of a four stroke diesel engine has the followin, specifications : Cylinder bore :150 mm Maximum pressure : 3.5 MPa Cylinder material : GCI FG200 Factor of safety : 6 Poisson's ratio : 0.25 Determine the thickness of the cylinder wall. Also calculate the apparent and net circumferential stresses in the cylinder wall.