For the connection shown, determine the average shear stress in the 0.75-in.-diameter bolts if the load is P = 60 kips.
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- Three round, copper alloy bars having the same length L but different shapes are shown, in the figure. The first bar has a diameter d over its entire length, the second has a diameter d over one-fifth of its length, and the third has a diameter d over one-fifteenth of its length. Elsewhere, the second and third bars have a diameter Id. All three bars are subjected to the same axial load P. Use the following numerical data: P = 1400 kN, L = 5m,d= 80 mm, E= 110 GPa. and v = 0.33. (a) Find the change in length of each bar. (b) Find the change in volume of each bar.Repeat Problem 11.2-14 using L = 12 ft, ß = 0.25 kips/in., ßRl= 1.5ßL2, and ßR2= 2 ßR1.For the connection shown, determine the average shear stress in the 0.75-in.-diameter bolts if the load is P = 68 kips. O 18.9 ksi O 30.8 ksi O 36.5 ksi O 33.1 ksi O 22.7 ksi
- Let's considera rod having a solid circular cross-section with diameter of 4 mm and it is made of a material having a Young's modulus E= 200 Gpa and a Poisson's ratio of 0.3. If a tensile force Fis subjected to that rod cross-section, the diameter becomes 3.995 mm. determine the applied force F Select one: OF 5236 N O F=15708 N Clear mopshoe Finish attemptFor the connection shown, determine the average shear stress in the 0.75-in.-diameter bolts if the load is P = 54 kips. P O 17.8 ksi O 14.8 ksi O 20.1 ksi O 24.4 ksi O 22.9 ksiQ1/ Find the minimum bolt diameter and the minimum thickness of each yoke that will support a load P = 14 kips without exceeding a shearing stress of 12 ksi and a bearing stress of 20 ksi.
- Start Three cables having an area of 0.05 in2each is carrying the load W as shown. With no stress, the original lengths of the cables are 74.99 ft, 75.00 ft, and 74.94 ft. llabus Esments E = 29 x 10° psi ences nts ors on W 1500 lb Which of the following most nearly gives the stress in the longest wire? Select the correct response: 12,099.13 psi 8,342.87 psi O10,194.03 psi 6,131.66 psiQ1/ A bracket is supported by means of 4 rivets of the same size. Design the 7. Alalkau diameter of the rivet if Ou (tenşile ultimate stress) for the rivet material is 560MPA. Which of the rivet has max resistance? 20KN 20KN B0mm 30 mm 30 mm 30 mmWe will use both shearing and bearing analysis to determine the quantities of rivets needed to fasten BC and BE. We can determine two values then choose what will be more safe. ■ For Member BC: ■ Based on Shearing: V T == ■ Av Based on Bearing: P Ab 70MPa = 96000 N .n. (19) ²x n 1/4. π n = 4.84 5 rivets 96000 N (19mm) (6mm) xn 140MPa n = 46.015≈ 7 rivets For member BC, we must use 7 rivets since we must need a minimum of 7 rivets to resist bearing stress produced by the connection. If we only use 5 rivets, then the bearing stress will become 168.42 MPa. It will result to failure since the allowable bearing stress is only 140 Mpa. ■ For member BE: (Practice at Home) Pac EXAMPLE: 5. The figure shows a roof truss and the detail of the riveted connection at joint B. Using allowable stresses of t = 70 MPa and ob= 140 MPa, how many 19-mm diameter rivets are required to fasten member BC to the gusset plate? Member BE? What is the largest average tensile or compressive stress in BC and BE? Say…
- 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.• Bars (1) have a cross-sectional area of A₁ = 0.65 in.2 and a length, L₁= 7 ft. • Bars (1) are made of cast iron with an elastic modulus of E₁ = 24,000 ksi, a coefficient of thermal expansion, a₁ = 12.3 x 10-6/°F and yield strength of oy = 120 ksi. • Bar (2) has a cross-sectional area of A₂ = 1.45 in.² and a length, L₂ = 5.5 ft. • Bar (2) is made of stainless steel with a coefficient of thermal expansion, a₂ = 10.6 × 10-6/°F. • The stress-strain diagram provided below presents the results of the stainless steel's (i.e., Bar (2)) bar tension test. • There is a gap of A = 0.1 in. in the connection at B and a = 3 ft. • All bars are unstressed before a load P = 12 kips is applied and the temperature increases by AT = 40°F. Stress-strain diagram for stainless steel bar: (1) a Stress (ksi) L2 Rigid bar 120 100 80 60 40 20 0 0 0 B (2) P a (1) C Upper scale L₁ Connection details at node C Lower scale. C 0.025 0.050 0.075 0.100 0.125 0.150 0.175 0.006 0.008 0.010 0.012 0.014 0.002 0.004 Strain…Q4/A/Determine the Maximum axial stress for a 36-ft.joint of 7.625-in.OD.6.625in.ID.39 Ib/ft. N-80 casing with API long, round thread couplings if the casing subjected to a 400 00 0 lbf axial tension in a portion of directional wellbore having a doglog severity of 4/100ft.Compute the maximum axiat stress assuming: 1-Uniform contact between the casing and the borehole wall. 2- Contact between the casing and the borehole wall only at the couplings. 3-The joint strength of the API round thread-couplings. Take ult for N-80-100 000 lbf). utmat